1st grade find the mistake in addition worksheets
Your child looks at someone else's addition, decides whether the answer is right, and picks the correct sum when it is wrong.
Common Core 1.NBT.C.4 (Number and Operations in Base Ten)
Sample problems
- Sample 1A student worked out 46 + 6 and got 42. Which is true?
A. The answer should be 40.
B. The student is right.
C. The answer should be 52.Answer: C
- Sample 2A student worked out 27 + 7 and got 24. Which is true?
A. The answer should be 20.
B. The student is right.
C. The answer should be 34.Answer: C
- A bit harderA student worked out 15 + 8 and got 13. Which is true?
A. The answer should be 23.
B. The answer should be 7.
C. The student is right.Answer: A
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