Posted by Peter on 21st June 2007

Maths worksheets: Mental addition of three numbers. Y4

When looking at adding three small numbers there are several strategies which can be employed. Usually it is better to start with the largest number, rather than the first number.

This implies a knowledge that addition can be done in any order. Often you can spot two of the numbers which add up to 10 – this can make it much easier. If you are good at doubling and two of the numbers are the same, it might be worth starting with these.

4401-01 Mental addition of three numbers (pg 1)

4401-02 Mental addition of three numbers (pg 2)

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