Chapter 99 · Part 1

Mental Arithmetic

Concepts

Formulae

8 min

Read time

Intermediate

Learning objectives

1Explain key Concepts
2Explain detailed Explanation
3Explain mental Arithmetic
4Explain addition Strategies
5Explain subtraction Strategies
6Explain multiplication Strategies

Your learning path

Introduction

1. Key Concepts

2. Detailed Explanation

Understanding Mental Arithmetic

Addition Strategies

Subtraction Strategies

Multiplication Strategies

Division Strategies

Rounding Strategies

Worked Example

Summary

Quiz

Revision

Follow the full path

Key terms

CompensationBreaking apartHalvingDoublingRoundingEstimationMental arithmeticSportsMethodsPurposePatternPatternsShoppingImportanceUsing TensCounting On

Connected chapters

5-Digit Numbersshares: Rounding Additionshares: Estimation, Purpose Patternsshares: Pattern, Importance Decimal Fractionsshares: Rounding Moneyshares: Shopping

21Concepts

0Formulae

8Minutes

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