Math Practice 101
Homework Explained - Math Practice 101

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Grade 3 Go Math Practice - Answer Keys
Common Core


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Multiplication and Division Relationships

Essential Question How can you write related multiplication and division equations for 2-digit factors?

Multiplication and division are inverse operations.

UNLOCK the Problem

Megan has a rose garden with the same number of bushes planted in each of 4 rows. There are 48 bushes in the garden. How many bushes are in each row of Megan’s garden?

One Way

  • Question 1 (request help)

    Make an array.

    48 ÷ 4 = \(\blacksquare\)    

    Count 48 tiles. Make 4 rows by placing 1 tile in each row.

    Continue placing 1 tile in each of the 4 rows until all the tiles are used.

    Draw the array you made.

    \(\Box\)

    \(\Box\)

    \(\Box\)

    \(\Box\)
  • There are     tiles in each row.
    		                ÷
    		    =
    		   

Another Way

  • Question 2 (request help)

    Write related equations.
    48 ÷ 4 = \(\blacksquare\)
    Think: 4 times what number equals 48                     You can check answer using repeated addition.
                    
  • 4 x     = 48
    		                                                                                        +
    		    +
    		    +
    		    =
    		   
  • Question 2 (request help)

    Write related equations.
  •     x
    		    = 48
    		                       48 ÷     =
    		   

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