Two codebreakers, each with a joke to work out; one is converting from standard form to normal numbers, the other converts back.
KS3 Maths Curriculum Area
Interpret and compare numbers in standard form A x 10n 1≤A<10, where n is a positive or negative integer or zero.
Andy Lutwyche is a purveyor of mathematics and a producer of resources, more of which you can find on his TES shop. You can also follow him on Twitter at @andylutwyche.
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