REVISION NOTES

IGCSE Edexcel Mathematics A

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

edexcel_igcse_mathematics a_topic 07_ratio and proportion_001_introduction to proportion

1.7.2 Divide a quantity in a given ratio or ratios

edexcel_igcse_mathematics a_topic 07_ratio and proportion_002_conversion between ratio and fraction

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

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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 & 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

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