This official Pearson Edexcel IGCSE Economics guide details the division between Paper 1 (Micro) and Paper 2 (Macro), emphasizing critical examiner insights. It provides actionable strategies for quantitative accuracy, diagram labeling precision, and structuring high-tariff levels-based responses to secure a Grade 9.
A scientific or graphical calculator is permitted. Graphical calculators must be in exam mode with all stored programs and data cleared before the exam; the calculator must not be able to retrieve stored text or formulae.
AO1: AO1 Recall, select and communicate knowledge of economic terms, concepts and rules (26.3%)
AO2: AO2 Apply knowledge and understanding to create, analyse and extract information from various sources (36.2%)
AO3: AO3 Analyse economic problems and issues using appropriate data and concepts (18.8%)
AO4: AO4 Evaluate economic decisions, policies and arguments (18.7%)
วัตถุประสงค์: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
ใช้เมื่อใด: Solving or sketching a function when you want to find where its graph crosses or turns.
ขั้นตอน
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
ข้อควรระวังในการสอบ: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.
Statistics mode (mean, SD & regression)
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
ใช้เมื่อใด: Any data-handling, statistics, or required-practical analysis question.
ขั้นตอน
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
ข้อควรระวังในการสอบ: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.
Carry exact values with Ans & memory
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Keep full-precision intermediate values to avoid rounding errors.
ใช้เมื่อใด: Multi-step calculations where premature rounding loses the final accuracy mark.
ขั้นตอน
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
ข้อควรระวังในการสอบ: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.
Equation solver — to CHECK your working
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
ใช้เมื่อใด: As a check only, after solving by hand.
ขั้นตอน
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
ข้อควรระวังในการสอบ: Allowed, but clear stored programs/data (graphical calculators in exam mode) and show the required working — unsupported calculator answers score no method marks.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 1Sectors of the economy & general quantitative skills
Omitting currency symbols, percentage signs, or scale labels (such as 'bn' or 'million') in quantitative calculation answers.
วิธีหลีกเลี่ยง: Always check the units in the question prompt (e.g. €, £, %, or bn) and include them in your final answer. A correct number without units is capped at 1 mark instead of 2.
2mediumคะแนนที่เกี่ยวข้อง: 2Government policies
Writing evaluative balance or counter-arguments on 6-mark 'Analyse' questions.
วิธีหลีกเลี่ยง: Keep the analysis entirely one-sided. 6-mark questions do not reward AO4 (evaluation) marks. Adding balanced evaluation is a waste of examination time with zero return.
3highคะแนนที่เกี่ยวข้อง: 2Demand, supply and market equilibrium
Failing to draw original curves, new curve shifts, or labeling equilibrium points (P1, Q1) on supply/demand shift diagrams.
วิธีหลีกเลี่ยง: Use a ruler to draw straight shifts, label the new curve clearly (e.g. S1 or D1), and use dashed lines to connect the new equilibrium point directly to both the price and quantity axes.
4highคะแนนที่เกี่ยวข้อง: 6Government policies
Providing single-sided responses to 9-mark 'Assess' or 12-mark 'Evaluate' questions.
วิธีหลีกเลี่ยง: Always provide a balanced response with counter-arguments. For 12-mark questions, you must also provide a supported final judgment that explicitly addresses the extent of the impact.
Confusing a fiscal deficit with a current account deficit.
วิธีหลีกเลี่ยง: Remember that a fiscal deficit occurs when government spending exceeds tax revenue, whereas a current account deficit occurs when import spending exceeds export revenues.
6highคะแนนที่เกี่ยวข้อง: 1Sectors of the economy & general quantitative skills
Failing to round calculation questions strictly to exactly two decimal places when requested.
วิธีหลีกเลี่ยง: Unless stated otherwise, always carry out the division fully and round your final numeric answer to exactly two decimal places (e.g., 12.79% instead of 12.8% or 13%).