Subtract numbers either side of 100

Use counting up to find differences between numbers either side of 100.

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Subtracting 2-digit numbers, but no 'decomposition' needed. A good mental arithmetic exercise.

practice at subtracting 11 or 21 from 2-digit numbers 'in your head'.

Here we have four worksheets on subtracting whole hundreds.

Sets of quick mental arithmetic questions. Subtracting single digits and 2-digit numbers.