10 More, 10 Less
2.NBT.8 — Mentally add or subtract 10 or 100 to a given number 100-900
Build this worksheet below — all three levels and the answer key, ready to print.
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What is on the three 10 More, 10 Less worksheets
- Support
- draws a place value chart beside every problem.
- On level
- The grade's own level, with no drawings.
- Challenge
- moves the missing number out of the answer slot, and uses the harder cases.
Example problems from the on-level sheet
- 515 + 10 = ___
- 453 - 10 = ___
- 657 + 10 = ___
Every sheet is generated, so the numbers are different each time you make one.
Before this: 1.NBT.5 — mentally find 10 more or 10 less than a two-digit number without counting.