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20. MATHEMATICAL PRACTICE © Explain Terry added 3 and 7. He got a sum of 9. His answer is not correct. Describe how Terry can find the correct sum. ​
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20. MATHEMATICAL PRACTICE © Explain Terry added 3 and 7. He got a sum of 9. His answer is not correct. Describe how Terry can find the correct sum. ​

User Hraban
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1 Answer

3 votes

Answer:

He can just count on his fingers or continue counting from 3 all the way until you add seven fingers to the original three

Explanation:

User Johan Vergeer
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