Mathematics
Grade-2
Easy
Question
Jacob found some hermit crabs. Justin found 15 hermit crabs. They now have 23 hermit crabs. How many did Jacob find?
Which equation models the problem?
- 15 + 23 = ?
- ? + 15 = 23
- 23 + 15 = ?
- ? + 23 = 15
Hint:
We have to find the correct equation according to the question. Here Jacob find some crabs and Justin finds 15 crabs so, the total no. of crabs should be the sum of crabs they both found.
The correct answer is: ? + 15 = 23
The equation that models the situation is ? + 15 = 23
NO. of hermit crabs Jacob found = ?
NO. of hermit crabs Justin found = 15
S0 total hermit crabs =? + 15 = 23
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![](data:image/png;base64,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)
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![](data:image/png;base64,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)
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