A Powerpoint to explain Multiplication and division by 10, 100, 1000 etc. This powerpoint has 36 slides containing examples. The method used involves moving digits of the number in relation to the decimal point, and replaces the previous version (which is still here should people prefer this method. Updated on 15th Feb 2023, Designed for KS4 / GCSE.
This covers:
Multiplying by 10, 100, 1000 etc. : Whole Numbers
Multiplying by 10, 100, 1000 etc. : Decimals
Dividing by 10, 100, 1000 etc. : Whole Numbers
Dividing by 10, 100, 1000 etc. : Decimals
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From a mathematical level it's fundamentally wrong and introduced misconceptions to the pupils. Adding on a zero and moving the decimal place are literally what you plan to avoid rather than actively teach.
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