Brainwhizz: add and subtract 100

Speedy addition and subtraction of 100 from 3-digit numbers.

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Children can show how quickly they can calculate mentally by answering these questions as fast as possible.

Today we will look at the written method of subtraction, subtracting a 2-digit number from a 3-digit number including having to make an exchange.

Today we will look at the written method of subtraction.

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