Math Practice 101
Homework Explained - Math Practice 101

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Grade 4 HMH Go Math - Answer Keys


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  • Question 1 (request help)

    Use the grid to model the factors of 18. Tell whether 18 is prime or composite.

    Factors of 18: ____ , ____ , ____ , ____ , ____ , ____

    Think: 18 has more than two factors.

    So, 18 is _________ .
  • Type below:

Tell whether the number is prime or composite.

  • Question 2 (request help)

    11

    Think: Does 11 have other factors besides 1 and itself?
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Tell whether the number is prime or composite.

Write true or false for each statement. Explain or give an example to support your answer.

  • Question 15 (request help)

    A composite number cannot have three factors.
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  • Question 16 (request help)

    I am a number between 60 and 100. My ones digit is two less than my tens digit. I am a prime number. What number am I?
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  • Question 17 (request help)

    Name a 2-digit odd number that is prime. Name a 2-digit odd number that is composite.
  • Type below:
  • Question 18 (request help)

    Choose the words that correctly complete the sentence.

    The number 9 is  because it has  two factors.
  • Type below:

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