Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 17 (request help)

    Critique Reasoning

    A bowl of flower seeds contains 5 petunia seeds and 15 begonia seeds. Riley calculated the probability that a randomly selected seed is a petunia seed as \(\frac{1}{3}\). Describe and correct Riley’s error.
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  • Question 18 (request help)

    There are 20 seventh graders and 15 eighth graders in a club. A club president will be chosen at random.

    a. Analyze Relationships

    Compare the probabilities of choosing a seventh grader or an eighth grader.
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  • Question 18 (request help)

    b. Critical Thinking

    If a student from one grade is more likely to be chosen than a student from the other, is the method unfair? Explain.
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A jar contains 8 red marbles, 10 blue ones, and 2 yellow ones. One marble is chosen at random. The color is recorded in the table, and then it is returned to the jar. This is repeated 40 times.

  • Question 19 (request help)

    Communicate Mathematical Ideas

    Use proportional reasoning to explain how you know that for each color, the theoretical and experimental probabilities are not the same.
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  • Question 20 (request help)

    Persevere in Problem Solving

    For which color marble is the experimental probability closest to the theoretical probability? Explain.
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