Edexcel IGCSE Math a 1.6 B Express a Given Number As a Percentage of Another Number Topic Practice

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Pearson Edexcel International GCSE Math A

1 Numbers and the number system

1.4 Powers and roots

1.5 Set language and notation

1.6 Percentages

1.6.A That ‘percentage’ means ‘number of parts per 100’

1.6.B Express a given number as a percentage of another number

1.6.C Express a percentage as a fraction and as a decimal

1.6.D The multiplicative nature of percentages as operators

1.6.E Simple percentage problems

1.6.F Reverse percentages In a sale, prices were reduced by

1.6.G Compound interest and depreciation

1.6.HA Repeated percentage change

1.6.HB Compound interest problems

1.7 Ratio and proportion

1.8 Degree of accuracy

1.9 Standard form

1.10 Applying number

1.11 Electronic calculators

2 Equations, formulae and identities

2.1 Use of symbols

2.2 Algebraic manipulation

2.3 Expressions and formulae

2.4 Linear equations

2.6 Simultaneous linear equations

2.7 Quadratic equations

2.8 Inequalities

3 Sequences, functions and graphs

3.2 Function notation

4 Geometry and trigonometry

4.1 Angles, lines and triangles

4.5 Construction

4.6 Circle properties

4.7 Geometrical reasoning

4.8 Trigonometry and Pythagoras’ theorem

4.9 Mensuration of 2D shapes

4.10 3D shapes and volume

4.11 Similarity

5 Vectors and transformation geometry

5.2 Transformation geometry

6 Statistics and probability

6.1 Graphical representation of data

6.2 Statistical measures

6.3 Probability

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