GCSE Maths (Edexcel)
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Number
Structure and Calculation
Multiplying by Powers of 10
3:16
Multiplication
Spec
N2
- Multiplying by powers of 10 involves moving the digits in a number and adding zeros
- Multiplying by 10 moves digits one place to the left
- Each time we multiply by 10, it is the same as adding a zero to the number
- Multiplying by larger powers of 10 is the same as repeatedly multiplying by 10
- To get from 5 to 50, we multiply by 10 once
- To get from 5 to 500, we multiply by 100
- To get from 5 to 5000, we multiply by 1000
- When multiplying by 100, we are multiplying by 10 two times
- To multiply by 100, we shift the digits two places to the left and fill in the gaps with zeros
- 12 times 100 is equal to 1200
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