Add the nearest multiple of 10 and adjust

Once the technique for adding 9 to a number has been mastered, there is no problem with adding 19, 29 or 39!

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Without using paper and pencil practise adding three small numbers as well as adding two 2-digit numbers.

Harder mental addition, using all the skills and strategies learned so far.

Work carefully, using patterns such as pairs of numbers that make 10, to help answer these.

Working carefully, looking for patterns to help, remembering that addition can be done in any order.

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