Adding and subtracting a 1-digit number from a 3-digit number

Adding and subtracting a 1-digit number from a 3-digit number with the help of place value grids.

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A variety of addition questions, including finding different ways to make totals.

Find three numbers to make totals, with the help of number lines. Two steps to work these out, making them quite hard.

A selection of mini investigations, finding how many different totals can be made.

Add and subtract ones from 3-digit numbers.

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