Math Practice 101
Homework Explained - Math Practice 101

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Grade 3 Go Math Practice - Answer Keys
Chapter 1: Mid-Chapter Checkpoint


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Vocabulary

Choose the best term from the box.

  • Question 1 (request help)

    A ________ is an ordered set of numbers or objects in which the order helps you predict what comes next.
  •    
  • Question 2 (request help)

    The _________ states that when you add zero to any number, the sum is that number.
  •    

Concepts and Skills

Is the sum even or odd? Write even or odd.

Use rounding or compatible numbers to estimate the sum.

  • Question 6 (request help)

    \(\begin{align}
    56\\
    +32\\
    \hline
    \end{align}\)

    Estimate:
  •    +
    		   =
    		   
  • Question 7 (request help)

    \(\begin{align}
    271\\
    +425\\
    \hline
    \end{align}\)

    Estimate:
  •    +
    		   =
    		   
  • Question 8 (request help)

    \(\begin{align}
    328\\
    +127\\
    \hline
    \end{align}\)

    Estimate:
  •    +
    		   =
    		   

Use mental math to find the sum.

Estimate. Then find the sum.

  • Question 12 (request help)

    \(\begin{align}
    356\\
    +442\\
    \hline
    \end{align}\)
  • Estimate:   
    Sum:   
  • Question 13 (request help)

    \(\begin{align}
    164\\
    +230\\
    \hline
    \end{align}\)
  • Estimate:   
    Sum:   
  • Question 14 (request help)

    \(\begin{align}
    545\\
    +139\\
    \hline
    \end{align}\)
  • Estimate:   
    Sum:   
  • Question 15 (request help)

    \(\begin{align}
    437\\
    +184\\
    \hline
    \end{align}\)
  • Estimate:   
    Sum:   

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