Adding and taking away within 1000
Grade 3 · Level 1 · Sheet 1the answers
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- 1.620+305
- 2.406+361
- 3.952+26
- 4.54+211
- 5.682+317
- 6.531+161
- 7.72+914
- 8.990+2
- 9.875+122
- 10.173+4
- 11.933+31
- 12.57+840
Show the answer key
- 1.925
- 2.767
- 3.978
- 4.265
- 5.999
- 6.692
- 7.986
- 8.992
- 9.997
- 10.177
- 11.964
- 12.897
Answer key · Adding and taking away within 1000 · Level 1 · Sheet 1
- 1.925
- 2.767
- 3.978
- 4.265
- 5.999
- 6.692
- 7.986
- 8.992
- 9.997
- 10.177
- 11.964
- 12.897
The mistakes behind most wrong answers
A wrong answer in adding and taking away within 1000 is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.
- 926+53=?
The answer is 979. A child who answers 873 probably took away instead of adding.
- 443+55=?
The answer is 498. A child who answers 497 probably counted one too many or too few.
- 363+587=?
The answer is 950. A child who answers 850 probably lost track of the ten.
- 2+240=?
The answer is 242. A child who answers 2 probably answered with one of the numbers shown.
In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.