Lesson 3

Explore Subtraction Word Problems

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

Ask students to share their number sentences. Emphasize that there are different ways of representing the same problem.

A–B. Possible responses:

Based on color:

6 + 6 = 12.

Based on rows:

4 + 4 + 4 = 12.

Based on columns:

3 + 3 + 3 + 3 = 12.

C.  6 + 6 = 4 + 4 + 4 

     3 + 3 + 3 = 3 + 6 

    2 + 2 + 2 = 6 + 6

I. Number Sentences

Here are 12 tiles in a design.
Write 2 number sentences that show the total.    image

  1. ___________________________________

  2. ___________________________________

  3. Circle the true number sentences. Tell your neighbor how you decided.

    6 + 6 = 4 + 4 + 4


    3 + 3 + 3 = 3 + 6


    2 + 2 + 2 = 6 + 6