Adding 2 or 3 digit numbers

The understanding tested is noted for each question, with a link to relevant support material. Always check the digits in the question have been copied correctly.

Mistakes with addition facts may be common.

1) 34 + 63 = 97

2) 37 + 45 = 82

Carrying from units.

3) 82 + 56 = 138

Carrying a final digit.

4) 326 + 468 = 794

Carrying from units.

5) 452 + 175 = 627

Carrying from tens.

6) 267 + 378 = 645

Carrying.

9) 37 + 17 + 29 = 83

Adding 3 numbers, carrying.


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