3rd grade find the mistake in addition and subtraction worksheets
Your child checks a worked addition or subtraction problem with numbers up to 1,000, decides whether the answer is right, and picks the correct answer when it is not.
Common Core 3.NBT.A.2 (Number and Operations in Base Ten)
Sample problems
- Sample 1A student worked out 41 − 24 and got 23. Which is true?
A. The answer should be 17.
B. The student is right.
C. The answer should be 7.
D. The answer should be 65.Answer: A
- Sample 2A student worked out 70 − 22 and got 52. Which is true?
A. The answer should be 58.
B. The answer should be 48.
C. The student is right.
D. The answer should be 92.Answer: B
- A bit harderA student worked out 463 − 145 and got 322. Which is true?
A. The answer should be 608.
B. The answer should be 318.
C. The student is right.
D. The answer should be 218.Answer: B
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