Pairs that make 100 or 1000

Knowing pairs of numbers that make 10 and being able to count in tens make these questions much quicker to answer.

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Revision pages on adding to make multiples of 10 and subtraction of multiples of 10.

Addition and subtraction of multiples of 100. Easy if you know the totals of pairs of single digits.

Revising adding and using the relationship between addition and subtraction.

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