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Economics · Price Elasticity of Demand

Flip through 20 full sample pages with substantial teaching notes, deep-dive explanations, worked practice, exam application and self-check questions.

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Overview

Microeconomics foundations

Economics studies choices under scarcity. This sample develops opportunity cost, demand, supply, equilibrium, elasticity, market failure and policy evaluation.

  • scarcity
  • incentives
  • marginal thinking
  • markets
  • policy
Worked example / practice: Choosing two hours of revision may have an opportunity cost of two hours of paid work or leisure.

Deep-dive notes

The central idea on this page is microeconomics foundations. To use it confidently, connect the definition or rule above to the specific details listed here: scarcity; incentives; marginal thinking. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Microeconomics foundations” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain microeconomics foundations without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Define the economic concept before applying it to the scenario.
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Scarcity

Unlimited wants, limited resources

Scarcity means resources are insufficient to satisfy all wants, forcing choices by individuals, firms and governments.

  • land
  • labour
  • capital
  • enterprise
  • allocation
Worked example / practice: A government spending more on hospitals may have less available for another programme.

Deep-dive notes

The central idea on this page is unlimited wants, limited resources. To use it confidently, connect the definition or rule above to the specific details listed here: land; labour; capital. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Unlimited wants, limited resources” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain unlimited wants, limited resources without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Scarcity is not the same as absolute poverty.
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Opportunity cost

The next best alternative

Opportunity cost is the value of the next best alternative forgone when a choice is made.

  • choice
  • alternatives
  • forgone benefit
  • explicit context
Worked example / practice: If a student chooses a €20 concert over a book, the opportunity cost is the value of the best alternative use of that €20 and time.

Deep-dive notes

The central idea on this page is the next best alternative. To use it confidently, connect the definition or rule above to the specific details listed here: choice; alternatives; forgone benefit. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “The next best alternative” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain the next best alternative without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: State the next best alternative, not every possible alternative.
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Demand

Consumers and price

Demand is the quantity consumers are willing and able to buy at different prices over a period, ceteris paribus.

  • price movement = movement along curve
  • income/preferences/etc can shift demand
  • normal/inferior goods
  • substitutes/complements
Worked example / practice: A fall in a product's own price usually causes an extension in quantity demanded.

Deep-dive notes

The central idea on this page is consumers and price. To use it confidently, connect the definition or rule above to the specific details listed here: price movement = movement along curve; income/preferences/etc can shift demand; normal/inferior goods. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Consumers and price” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain consumers and price without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Do not call a price-induced movement a shift.
Property of Malta Tutors · www.maltatutors.com
Supply

Producers and price

Supply is the quantity producers are willing and able to offer at different prices over a period, ceteris paribus.

  • own price affects movement
  • costs/technology/taxes shift supply
  • productivity
  • number of firms
Worked example / practice: Lower production costs can shift supply right.

Deep-dive notes

The central idea on this page is producers and price. To use it confidently, connect the definition or rule above to the specific details listed here: own price affects movement; costs/technology/taxes shift supply; productivity. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Producers and price” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain producers and price without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Always identify whether the determinant affects demand or supply.
Property of Malta Tutors · www.maltatutors.com
Equilibrium

Market-clearing price

Equilibrium occurs where quantity demanded equals quantity supplied. Disequilibrium creates pressure for price adjustment in a competitive market.

  • shortage below equilibrium
  • surplus above
  • price signal
  • quantity traded
Worked example / practice: If price is below equilibrium, excess demand can push price upward.

Deep-dive notes

The central idea on this page is market-clearing price. To use it confidently, connect the definition or rule above to the specific details listed here: shortage below equilibrium; surplus above; price signal. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Market-clearing price” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain market-clearing price without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Use a labelled diagram if the exam expects one.
Property of Malta Tutors · www.maltatutors.com
Elasticity

Price elasticity of demand

PED measures responsiveness of quantity demanded to a change in price: %ΔQd/%ΔP. The sign is often negative, though magnitude is frequently discussed.

  • elastic >1 magnitude
  • inelastic <1
  • unit elastic =1
  • determinants include substitutes/time/necessity
Worked example / practice: If price rises 10% and quantity demanded falls 20%, PED≈−2, elastic.

Deep-dive notes

The central idea on this page is price elasticity of demand. To use it confidently, connect the definition or rule above to the specific details listed here: elastic >1 magnitude; inelastic <1; unit elastic =1. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Price elasticity of demand” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain price elasticity of demand without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Interpret the number in words, not just as a label.
Property of Malta Tutors · www.maltatutors.com
Revenue

PED and total revenue

Elasticity helps predict how a price change may affect total revenue. When demand is elastic, price and revenue tend to move in opposite directions; when inelastic, they tend to move in the same direction.

  • TR=P×Q
  • elastic demand
  • inelastic demand
  • context matters
Worked example / practice: With inelastic demand, a price increase may raise total revenue because quantity falls proportionally less.

Deep-dive notes

The central idea on this page is ped and total revenue. To use it confidently, connect the definition or rule above to the specific details listed here: TR=P×Q; elastic demand; inelastic demand. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “PED and total revenue” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain ped and total revenue without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Do not assume higher revenue means higher profit.
Property of Malta Tutors · www.maltatutors.com
Income elasticity

Demand and income changes

Income elasticity of demand measures responsiveness of demand to income changes and helps classify normal, inferior and luxury-type goods.

  • positive YED normal
  • negative inferior
  • large positive often luxury
  • business forecasting
Worked example / practice: Demand for some premium travel may rise faster than income in expansions.

Deep-dive notes

The central idea on this page is demand and income changes. To use it confidently, connect the definition or rule above to the specific details listed here: positive YED normal; negative inferior; large positive often luxury. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Demand and income changes” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain demand and income changes without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Classification depends on measured behaviour, not moral judgement.
Property of Malta Tutors · www.maltatutors.com
Market failure

When markets misallocate resources

Market failure occurs when the free market produces an inefficient allocation of resources. Externalities, public goods, information problems and market power are common causes.

  • negative externality
  • positive externality
  • merit/demerit
  • public goods
  • asymmetric information
Worked example / practice: Pollution imposes external costs not fully reflected in a firm's private production cost.

Deep-dive notes

The central idea on this page is when markets misallocate resources. To use it confidently, connect the definition or rule above to the specific details listed here: negative externality; positive externality; merit/demerit. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “When markets misallocate resources” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain when markets misallocate resources without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: State whose costs or benefits are external.
Property of Malta Tutors · www.maltatutors.com
Externalities

Social versus private effects

A negative externality of production exists when third parties bear costs from production. Efficient policy seeks to align private incentives with social costs or benefits.

  • MSC/MPC
  • MSB/MPB
  • overproduction
  • corrective policy
Worked example / practice: A carbon tax can raise private cost toward social cost, reducing quantity toward a more efficient level.

Deep-dive notes

The central idea on this page is social versus private effects. To use it confidently, connect the definition or rule above to the specific details listed here: MSC/MPC; MSB/MPB; overproduction. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Social versus private effects” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain social versus private effects without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Evaluation should consider information, enforcement and unintended effects.
Property of Malta Tutors · www.maltatutors.com
Taxes

Indirect tax effects

An indirect tax raises firms' costs and shifts supply upward/left. The burden shared by consumers and producers depends partly on relative elasticities.

  • higher consumer price
  • lower producer net price
  • lower quantity
  • tax revenue
  • possible deadweight loss
Worked example / practice: With very inelastic demand, consumers may bear a larger share of a tax.

Deep-dive notes

The central idea on this page is indirect tax effects. To use it confidently, connect the definition or rule above to the specific details listed here: higher consumer price; lower producer net price; lower quantity. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Indirect tax effects” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain indirect tax effects without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Show the tax wedge clearly on a diagram.
Property of Malta Tutors · www.maltatutors.com
Subsidies

Encouraging activity

A subsidy lowers effective production cost and can increase supply and market quantity. It may be used for activities with positive externalities or strategic aims.

  • lower costs
  • supply right
  • government expenditure
  • risk of over-subsidising
Worked example / practice: Subsidising public transport may lower fares and encourage substitution away from cars.

Deep-dive notes

The central idea on this page is encouraging activity. To use it confidently, connect the definition or rule above to the specific details listed here: lower costs; supply right; government expenditure. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Encouraging activity” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain encouraging activity without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Evaluation: effectiveness depends on demand response and targeting.
Property of Malta Tutors · www.maltatutors.com
Price controls

Maximum and minimum prices

A maximum price below equilibrium can create shortage; a minimum price above equilibrium can create surplus.

  • price ceiling
  • price floor
  • shortage
  • surplus
  • rationing
Worked example / practice: Rent controls may improve affordability for some tenants but reduce quantity supplied or quality if set far below equilibrium.

Deep-dive notes

The central idea on this page is maximum and minimum prices. To use it confidently, connect the definition or rule above to the specific details listed here: price ceiling; price floor; shortage. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Maximum and minimum prices” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain maximum and minimum prices without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Policy questions need winners, losers and long-run effects.
Property of Malta Tutors · www.maltatutors.com
Firms

Costs, revenue and profit

Firms compare revenue with costs. Economic reasoning distinguishes fixed/variable costs, average/marginal values and short-run versus long-run decisions.

  • TR=P×Q
  • profit=TR−TC
  • fixed cost
  • variable cost
  • marginal cost
Worked example / practice: If selling one extra unit adds €12 revenue and €8 cost, the extra contribution to profit is €4.

Deep-dive notes

The central idea on this page is costs, revenue and profit. To use it confidently, connect the definition or rule above to the specific details listed here: TR=P×Q; profit=TR−TC; fixed cost. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Costs, revenue and profit” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain costs, revenue and profit without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Marginal analysis focuses on the change caused by one more unit.
Property of Malta Tutors · www.maltatutors.com
Market structures

Competition and market power

Market structure depends on number of firms, barriers to entry, product differentiation and information. Outcomes differ in pricing, innovation and efficiency.

  • perfect competition model
  • monopoly
  • oligopoly
  • monopolistic competition
  • barriers
Worked example / practice: High barriers can protect incumbent market power and reduce competitive pressure.

Deep-dive notes

The central idea on this page is competition and market power. To use it confidently, connect the definition or rule above to the specific details listed here: perfect competition model; monopoly; oligopoly. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Competition and market power” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain competition and market power without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Avoid saying every monopoly is automatically harmful; evaluate context.
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Macroeconomic link

Inflation and unemployment

Although this preview focuses on microeconomics, exam questions often connect market behaviour to macroeconomic conditions such as inflation, unemployment, growth and interest rates.

  • demand conditions
  • costs
  • real income
  • policy trade-offs
Worked example / practice: Higher inflation can reduce real purchasing power if nominal income does not keep pace.

Deep-dive notes

The central idea on this page is inflation and unemployment. To use it confidently, connect the definition or rule above to the specific details listed here: demand conditions; costs; real income. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Inflation and unemployment” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain inflation and unemployment without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Separate nominal from real changes.
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Evaluation

Building balanced economics answers

Evaluation weighs the likely size, timing, distribution and unintended effects of a policy. Strong answers are conditional rather than absolute.

  • depends on elasticity
  • short vs long run
  • stakeholder impacts
  • government information
  • opportunity cost
Worked example / practice: A tax may reduce consumption strongly if demand is elastic but have limited quantity effect if demand is highly inelastic.

Deep-dive notes

The central idea on this page is building balanced economics answers. To use it confidently, connect the definition or rule above to the specific details listed here: depends on elasticity; short vs long run; stakeholder impacts. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Building balanced economics answers” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain building balanced economics answers without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Use 'depends on...' only when you then explain exactly what it depends on.
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Practice

Microeconomics practice

1) Define opportunity cost. 2) Explain one factor shifting demand right. 3) Calculate PED for +5% price and −15% quantity. 4) Explain one drawback of a price ceiling.

  • next best alternative
  • determinant other than own price
  • PED=−3
  • shortage/non-price rationing possible
Worked example / practice: For Q4, link the ceiling below equilibrium to excess demand.

Deep-dive notes

The central idea on this page is microeconomics practice. To use it confidently, connect the definition or rule above to the specific details listed here: next best alternative; determinant other than own price; PED=−3. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Microeconomics practice” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain microeconomics practice without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Use diagrams only if they add analytical value and label them fully.
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Summary

Economics checklist

You should now be able to distinguish movements from shifts, calculate and interpret elasticity, explain market failure and evaluate common interventions.

  • scarcity
  • demand/supply
  • equilibrium
  • elasticity
  • market failure
  • policy evaluation
Worked example / practice: Final challenge: evaluate an indirect tax on a product with highly inelastic demand.

Deep-dive notes

The central idea on this page is economics checklist. To use it confidently, connect the definition or rule above to the specific details listed here: scarcity; demand/supply; equilibrium. These are not separate facts to memorise in isolation; they form the reasoning chain you should be able to reconstruct without looking.

A strong revision method is to close the notes after reading this section and reproduce the key idea from memory. Then compare your version with the page, identify any missing terminology, and correct the explanation before moving to practice. This converts passive reading into active retrieval and makes the page useful for both first learning and later revision.

Exam-style application

Possible question: Explain, apply or use the idea of “Economics checklist” in a new situation. Start by stating the relevant rule or definition precisely, then use the information in the question, show the intermediate reasoning, and finish with a conclusion that answers the command word.

  1. Identify exactly what the question is asking and underline the command word.
  2. Write the relevant definition, relationship, rule or principle before substituting or applying it.
  3. Use the information given rather than relying on vague general statements.
  4. Show the reasoning in a logical sequence so method marks remain visible.
  5. Check the final answer for units, terminology, plausibility and relevance to the question.

Before you turn the page

  • Can you define or explain economics checklist without looking?
  • Can you give one correct example and one common mistake?
  • Can you recognise when this idea should be used in a question?
  • Can you explain your method clearly enough for someone else to follow?
Exam / study tip: Full notes can extend into macroeconomics, international trade, development and syllabus-specific data-response practice.
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Preview only. Full resources may vary by subject, level and examination board. Property of Malta Tutors.