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GCSE Maths: Numbers

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Comprehensive GCSE Maths Mastery: Essential Concepts, Strategies, and Practice" is an all-encompassing guide designed to provide students with a thorough understanding of the entire GCSE Maths curriculum. This document is meticulously structured to cover five key areas: Number, Algebra, Geometry an...

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  • November 14, 2023
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  • 2023/2024
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  • GCSE
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fernandowilson
GCSE Maths Revision Notes: Number

1. Basic Operations

 Addition, Subtraction, Multiplication, Division
 BODMAS/BIDMAS rules (order of operations)
 Example: Solve 3 + 5 × (2 - 1)

2. Fractions

 Simplifying fractions
 Adding, subtracting, multiplying, and dividing fractions
 Converting between mixed numbers and improper fractions

 Example: Simplify 515155 and calculate 23+3432+43

3. Decimals

 Converting between fractions and decimals
 Decimal operations (addition, subtraction, multiplication, division)
 Rounding decimals to specified decimal places or significant
figures
 Example: Convert 0.75 to a fraction and round 3.14159 to 3
decimal places

4. Percentages

 Calculating percentages of quantities
 Converting between fractions, decimals, and percentages
 Percentage increase and decrease
 Example: Find 20% of 150 and calculate a 10% increase of 80

5. Ratios and Proportions

 Simplifying ratios
 Dividing quantities into a given ratio

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