Grade 4 - Progress in Mathematics

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Strategy: Choose the Operation

Meg collects comic books. She puts

7 comic books into each envelope. How many

envelopes does she need for 42 comic books?

Multiply to check division:

6 
 7  42

Yo u are separating into equal groups.

Divide: 42  7 ?

42  7  6

Meg needs 6 envelopes.

Visualize yourself in the problem as you

reread it. Focus on the facts and questions.

Facts: 7 comic books in each envelope

42 comic books

Question: How many envelopes does she need?

Think

? 
 7  42

Number Sentence Definition

 Join like groups or quantities.

 Separate, or take aw ay, from a group.

Compare two groups or quantities.

Find part of a group.

Find how many more are needed.

 Join only equal groups or quantities.

 Separate into equal groups.

Share a group equally.

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