Back

Mathematics A

  • IGCSE Edexcel
  • Revision Notes

1. Numbers & the Number System

1.1 Integers>1.2 Fractions>1.3 Decimals>1.4 Powers and Roots>1.5 Set Language and Notation>1.6 Percentages>1.7 Ratio and Proportion>1.8 Degree of Accuracy>1.9 Standard Form>1.10 Applying Numbers>1.11 Electronic Calculator>

2.1 Use of Symbols >2.2 Algebraic Manipulation >2.3 Expressions and Formulae >2.4 Linear Equations >2.5 Proportion (Higher Tier Only) >2.6 Simultaneous Linear Equations >2.7 Quadratic Equations >2.8 Inequalities >

3.1 Sequences >3.2 Function Notation (Higher Tier Only) >3.3 Graphs >3.4 Calculus (Higher Tier Only) >

4.1 Angles, Lines and Triangles >4.2 Polygons >4.3 Symmetry >4.4 Measures >4.5 Construction >4.6 Circle Properties >4.7 Geometric Reasoning >4.8 Trigonometry and Pythagoras’ Theorem >4.9 Mensuration of 2D Shapes >4.10 3D Shapes and Volumes >4.11 Similarity >

5.1 Vectors (Higher Tier Only) >5.2 Transformation Geometry >

6.1 Graphical Representation of Data >6.2 Statistical Measures >6.3 Probability >

7.1 Appendix 1: Foundation Tier Formula Sheet (Given) >7.2 Appendix 2: Foundation Tier Formula Sheet (To Memorise) >7.3 Appendix 3: Higher Tier Formula Sheet (Given) >7.4 Appendix 4: Higher Tier Formula Sheet (To Memorise) >7.5 Appendix 5: Notation >

1.7 Ratio and Proportion

1.7.1 Use ratio notation, including reduction to its simplest form and its various links to fraction notation

Simple ratios may be expressed using whole numbers.

Ratios may be cancelled down in a similar way to fractions.

Example: 4 : 6 = 2 : 3

1.7.2 Divide a quantity in a given ratio or ratios

1.7.3 Use the process of proportionality to evaluate unknown quantities

1.7.4 Calculate an unknown quantity from quantities that vary in direct proportion

1.7.5 Solve word problems about ratio and proportion

Start Your Success Story Today

© 2025 Studia Academy. All rights reserved.

  • Terms of Use
  • Privacy Policy

Contact Studia

Please fill out the form below, and we’ll get back to you as soon as possible.