Math Practice 101
Homework Explained - Math Practice 101

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Grade 4 HMH Go Math - Answer Keys


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  • Question 8 (request help)

    Jamal and Kim used different ways to solve 12 × 15 by using partial products. Whose answer makes sense? Whose answer is nonsense? Explain your reasoning.

    Jamal’s Work         Kim’s Work
     
    100 + 20 + 10 = 130   120 + 60 = 180

     

    a. For the answer that is nonsense, write an answer that makes sense.
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  • Question 8 (request help)

    b. Look at Kim’s method. Can you think of another way Kim could use the model to find the product? Explain.
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  • Question 9 (request help)

    Look at the model in 8b. How would the partial products change if the product was 22 × 15? Explain why you think the products changed.
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