5.3.4
Multiplication & Division
Multiplication & Division in your Head
Multiplication & Division in your Head
Use the knowledge you have already to multiply and divide in your head.


21 × 8
21 × 8
- 21 × 8 can be broken down into two easier calculations by partitioning 21.
- 20 × 8 = 160
- 1 × 8 = 8
- Finally, add the two answers.
- 21 × 8 = 160 + 8 = 168


Division using times tables
Division using times tables
- 144 ÷ 12 = 12
- You can work this out using your 12 times table.
- 360 ÷ 4 = 90
- You know that 36 ÷ 4 = 9 from you 4 times table.
- So 360 ÷ 4 = 9 × 10 = 90
1Year 5 - Number
1.1Number & Place Value
1.2Addition & Subtraction
1.3Multiplication & Division
2Year 5 - Measurement
2.2Perimeter & Area
2.3Time
3Year 5 - Geometry
3.1Properties of 3D Shapes
3.2Properties of 2D Shapes
3.4Position & Direction
4Year 5 - Statistics
5Year 6 - Number
5.1Number & Place Value
5.2Multiplication & Division
5.3Mental Maths
5.4Order of Operations
5.5Problem Solving
5.6Fractions & Decimals
6Year 6 - Ratio & Proportion
6.2Percentages
6.3Scale
7Year 6 - Algebra
7.2Missing Number Problems
8Year 6 - Measurement
8.1Problem Solving
8.2Unit Conversion
8.3Perimeter, Area & Volume
8.4Angles
8.5Circles
8.6Coordinate Grids
9Year 6 - Statistics
9.1Displaying Data
9.2Averages
Jump to other topics
1Year 5 - Number
1.1Number & Place Value
1.2Addition & Subtraction
1.3Multiplication & Division
2Year 5 - Measurement
2.2Perimeter & Area
2.3Time
3Year 5 - Geometry
3.1Properties of 3D Shapes
3.2Properties of 2D Shapes
3.4Position & Direction
4Year 5 - Statistics
5Year 6 - Number
5.1Number & Place Value
5.2Multiplication & Division
5.3Mental Maths
5.4Order of Operations
5.5Problem Solving
5.6Fractions & Decimals
6Year 6 - Ratio & Proportion
6.2Percentages
6.3Scale
7Year 6 - Algebra
7.2Missing Number Problems
8Year 6 - Measurement
8.1Problem Solving
8.2Unit Conversion
8.3Perimeter, Area & Volume
8.4Angles
8.5Circles
8.6Coordinate Grids
9Year 6 - Statistics
9.1Displaying Data
9.2Averages
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