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Cambridge IGCSE Mathematics · Core (Papers 1 and 3)
Topics: marks and papers
Every part of the syllabus, with the share of marks it carried and how often it appeared in past papers. Choose one to see its papers and try a question.
The current syllabus All sittings since 2019
In the papers analysed (March 2025 to June 2026, 21 papers).
Number C1
| Topic | Share of marks | On papers |
|---|---|---|
| Types of number C1.1 | 5.3% | 19 of 21 |
| Sets C1.2 | 2.0% | 10 of 21 |
| Powers and roots C1.3 | 1.8% | 15 of 21 |
| Fractions, decimals and percentages C1.4 | 1.9% | 11 of 21 |
| Ordering C1.5 | 1.2% | 9 of 21 |
| The four operations C1.6 | 4.2% | 15 of 21 |
| Indices I C1.7 | 0.5% | 8 of 21 |
| Standard form C1.8 | 1.2% | 11 of 21 |
| Estimation C1.9 | 1.3% | 10 of 21 |
| Limits of accuracy C1.10 | 1.1% | 9 of 21 |
| Ratio and proportion C1.11 | 2.6% | 14 of 21 |
| Rates C1.12 | 2.0% | 10 of 21 |
| Percentages C1.13 | 4.0% | 15 of 21 |
| Using a calculator C1.14 | 0.4% | 5 of 21 |
| Time C1.15 | 1.3% | 13 of 21 |
| Money C1.16 | 2.9% | 13 of 21 |
Algebra and graphs C2
| Topic | Share of marks | On papers |
|---|---|---|
| Introduction to algebra C2.1 | 0.4% | 4 of 21 |
| Algebraic manipulation C2.2 | 3.2% | 15 of 21 |
| Indices II C2.4 | 1.2% | 9 of 21 |
| Equations C2.5 | 8.1% | 21 of 21 |
| Inequalities C2.6 | 1.3% | 10 of 21 |
| Sequences C2.7 | 3.8% | 14 of 21 |
| Graphs in practical situations C2.9 | 1.0% | 5 of 21 |
| Graphs of functions C2.10 | 4.1% | 9 of 21 |
| Sketching curves C2.11 | 0.4% | 4 of 21 |
Coordinate geometry C3
| Topic | Share of marks | On papers |
|---|---|---|
| Coordinates C3.1 | 0.2% | 3 of 21 |
| Drawing linear graphs C3.2 | 0.4% | 4 of 21 |
| Gradient of linear graphs C3.3 | 0.1% | 1 of 21 |
| Equations of linear graphs C3.5 | 1.3% | 9 of 21 |
| Parallel lines C3.6 | 0.4% | 4 of 21 |
Geometry C4
| Topic | Share of marks | On papers |
|---|---|---|
| Geometrical terms C4.1 | 2.5% | 16 of 21 |
| Geometrical constructions C4.2 | 2.9% | 15 of 21 |
| Scale drawings C4.3 | 2.1% | 11 of 21 |
| Similarity C4.4 | 0.7% | 6 of 21 |
| Symmetry C4.5 | 1.1% | 8 of 21 |
| Angles C4.6 | 3.5% | 16 of 21 |
| Circle theorems C4.7 | 0.8% | 8 of 21 |
Mensuration C5
| Topic | Share of marks | On papers |
|---|---|---|
| Units of measure C5.1 | 0.7% | 8 of 21 |
| Area and perimeter C5.2 | 1.5% | 9 of 21 |
| Circles, arcs and sectors C5.3 | 1.0% | 7 of 21 |
| Surface area and volume C5.4 | 3.0% | 15 of 21 |
| Compound shapes and parts of shapes C5.5 | 2.1% | 11 of 21 |
Trigonometry C6
| Topic | Share of marks | On papers |
|---|---|---|
| Pythagoras’ theorem C6.1 | 1.0% | 8 of 21 |
| Right-angled triangles C6.2 | 1.8% | 11 of 21 |
Transformations and vectors C7
| Topic | Share of marks | On papers |
|---|---|---|
| Transformations C7.1 | 4.7% | 12 of 21 |
Probability C8
| Topic | Share of marks | On papers |
|---|---|---|
| Introduction to probability C8.1 | 1.5% | 9 of 21 |
| Relative and expected frequencies C8.2 | 0.4% | 5 of 21 |
| Probability of combined events C8.3 | 1.6% | 7 of 21 |
Statistics C9
| Topic | Share of marks | On papers |
|---|---|---|
| Classifying statistical data C9.1 | 0.1% | 1 of 21 |
| Interpreting statistical data C9.2 | 0.1% | 1 of 21 |
| Averages and range C9.3 | 2.5% | 15 of 21 |
| Statistical charts and diagrams C9.4 | 4.0% | 18 of 21 |
| Scatter diagrams C9.5 | 1.0% | 5 of 21 |
In the papers analysed: marks count labelled parts only (most, not all, of each paper), a part's marks split over its subtopics; shares describe past papers, not a forecast. stats.current = the syllabus now examined; stats.all = every sitting analysed