Subtract a 2-digit number from a 3-digit number with exchange

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.

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

How to use jottings to help with subtraction: the first stages of moving towards written methods of subtraction.

Subtraction by compensation means taking away more than you need and then adding some back. It can be quite an effective way to subtract.

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