How to Answer A-Level Economics Short-Answer Questions: Requirements for Define, Calculate, Draw, and Explain in Section B of Edexcel Units 1 and 2

In A-Level Economics, "short-answer questions" refer to 2–4 mark questions: defining a term, calculating a figure, drawing a diagram, or explaining a reason. The two exam boards have different arrangements: Edexcel IAL Unit 1 and Unit 2 each have a dedicated short-answer section (Section B, five questions totaling 20 marks); Cambridge 9708 does not have a separate short-answer section, with lower-mark questions scattered across the sub-questions of the data response questions in Papers 2 and 4 (see Economics Data Response Questions). We have already covered the command words for essay questions (Analyse, Examine, Discuss, Evaluate) in Economics Essay Questions; this article focuses on the next level down—what Define, Calculate, Draw, and Explain require and how to answer them. This is based on the Pearson IAL Economics syllabus (2nd edition) and Cambridge 9708 (2026–2028).

1. Where Are the Short-Answer Questions?

• Edexcel Unit 1 (How Markets Work) and Unit 2 (Macroeconomic Performance and Policy): 1 hour 45 minutes each, 80 marks; Section A has 6 multiple-choice questions (6 marks), Section B has 5 short-answer questions (20 marks), Section C has one data response question with five sub-questions (34 marks), and Section D has one 20-mark essay (choose one of two);
• Edexcel Unit 3 and Unit 4: No separate short-answer section (Section A: multiple-choice, Section B: data response, Section C: two essays);
• Cambridge 9708: No short-answer section. Papers 1 and 3 are multiple-choice (see Article 237), while Papers 2 and 4 are data response and essays. The data response questions contain about six (Paper 2) or four (Paper 4) sub-questions.

Edexcel Section B has 5 questions totaling 20 marks, averaging 4 marks per question. In the syllabus command word list, the 2–4 mark command words are Define, Calculate, Draw, and Explain, so Section B questions mainly fall into these categories (inferred from mark allocation; refer to the actual exam paper for specifics).

2. Official Requirements for Edexcel Lower-Mark Command Words

For higher-mark command words like Analyse (6), Examine (8), Discuss (14), and Evaluate / To what extent (20), see Article 186. A pattern emerges from the table: the higher the marks, the higher the cognitive demand—Define only requires knowledge, Explain adds application and reasoning, Analyse requires a chain of reasoning and data interpretation, and Examine introduces evaluation.

3. How to Answer the Four Types of Short-Answer Questions

The following examples are created by us to illustrate writing techniques and are not actual exam questions; the techniques are based on our experience.

1. Define (2 marks)

Example: Define opportunity cost.
How to answer: One accurate definition is enough—"the value of the next best alternative forgone when obtaining something." Make sure to include the keywords (next best alternative, forgone). No need to give examples or explain reasons; writing more just wastes time.

2. Calculate (2 or 4 marks)

Example: The price rises from 2.00 to 2.20, and the quantity demanded falls from 100 to 95. Calculate the price elasticity of demand.
How to answer: Write down the formula and each step: % change in price = (2.20 − 2.00) ÷ 2.00 × 100% = 10%; % change in quantity demanded = (95 − 100) ÷ 100 × 100% = −5%; elasticity = −5% ÷ 10% = −0.5. The syllabus recommends showing your working. Round the final answer as required by the question, and include units if necessary (see Article 199 for calculation conventions).

3. Draw (4 marks)

Example: Draw a diagram to illustrate the impact of imposing an indirect tax on a good.
How to answer: The syllabus requires "accurate labeling." A complete diagram must include at least: axis labels (Price, Quantity), the original supply and demand curves, the supply curve shifted upward after the tax, the original and new equilibrium points, and the corresponding prices and quantities (P₁, P₂, Q₁, Q₂). Ensure the direction and magnitude of the curve shift are correct; for example, a specific tax shifts the curve upward in parallel, and the distance of the shift equals the per-unit tax.

4. Explain (4 marks)

Example: Explain one reason why the demand for petrol is price inelastic.
How to answer: The syllabus specifies that explaining a cause or effect requires a two-step chain of reasoning. For example: Petrol lacks close substitutes → when the price rises, most drivers cannot easily switch to other fuels → the percentage fall in quantity demanded is less than the percentage rise in price, so demand is inelastic. State the reason first, complete the chain of causation, and finally link back to the conclusion in the question.

4. Common Reasons for Losing Marks

Here is a summary based on our experience:

• Writing an explanation for Define: Writing a long paragraph but missing the exact keywords;
• Only writing the final answer for Calculate: Getting no method marks if the calculation is wrong; using the wrong denominator for percentage change (it should be the original value);
• Incomplete labeling for Draw: Missing axis labels, curve names, or equilibrium points; drawing the curve shift in the wrong direction;
• Only one step for Explain: Just writing "because there are no substitutes" without explaining how this leads to inelastic demand;
• Writing three reasons when the question asks for "one reason": Extra points are not awarded, and it eats into the time needed for the subsequent data response and essay questions.

5. How to Practice

Here are some tips based on our experience:

1. Organize definition flashcards: Write a one- or two-sentence accurate definition for each core concept in the syllabus and highlight the keywords;
2. Practice common diagrams: Supply and demand shifts, taxes and subsidies, maximum and minimum prices, externalities, aggregate demand and aggregate supply, PPF, etc. Practice each diagram until the labeling is complete and you can draw it correctly on the first try;
3. Practice two-step reasoning: Write every Explain answer in three sentences: "Reason → Intermediate mechanism → Result";
4. Manage your time: Section B is worth 20 marks out of 80 (one-quarter). Allocate time proportionally to the marks, leaving enough time for the 34-mark data response and the 20-mark essay later;
5. Cambridge candidates: These writing techniques also apply to the sub-questions in data response questions, especially for Calculate and Explain.

Conclusion

Economics short-answer questions carry fewer marks, but the requirements are very clear: give an accurate definition for Define, show your working for Calculate, label fully for Draw, and write a two-step chain of reasoning for Explain. All 20 marks from the 5 questions in Edexcel Unit 1 and 2 Section B are here, and these techniques are also useful for Cambridge data response sub-questions. If you make these writing techniques a habit, you can consistently secure these marks. If you need A-Level Economics tutoring, feel free to chat with our teachers.

Verification note: This article was verified in September 2026. The duration, marks, and Section A–D settings for each Edexcel IAL Economics unit (Section B in Units 1 and 2 consists of 5 short-answer questions worth 20 marks; Units 3 and 4 have no short-answer section), as well as the marks and requirements for Define, Calculate, Draw, and Explain in the command word list (Syllabus Appendix 6), are sourced from the Pearson IAL Economics syllabus (2nd edition). The settings for each Cambridge 9708 paper and the number of data response sub-questions are sourced from Cambridge International's Economics 9708 syllabus for 2026, 2027 and 2028. The main command words for Section B are inferred by us based on mark allocation. The examples are created by us and are not actual exam questions. The writing techniques, common reasons for losing marks, and practice methods are based on our experience.

References:

• Pearson: International Advanced Level Economics
• Cambridge International: AS & A Level Economics (9708)