In this worksheet, add and subtract mentally.
Sometimes it is quicker to use little number tricks.
Example1
| 64 + 46 = |
|
60 + 40 = 100
4 + 6 = 10
Example2
| 26 − 17 = |
|
26 - 20 = 6
6 + 3 = 9
This activity contains 10 questions
Preview: Add and Subtract Numbers Mentally
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