Unit 3 Contents

Using Symbols

6. Fill in the boxes to make the following sentences true:
1. 4 + 4 = 4
2. 5 + 5 + 5 = 5
3. 2 + 2 + 2 + 2 + 2 = 2
4. 2 + 2 + 2 + 2 = 4
5. + 6 = 2 6
6. 9 + 9 + 9 + 9 = 9


7. Tell whether the number sentences are true or false. If they are false, rewrite them so they are true.
1. 3 4 = 4 + 4 + 4
2. 4 3 = 3 + 3 + 3
3. 3 4 = 2 + 2 + 2 + 2 + 2 + 2

Check-In: Questions 8–9

8. Shelly's family has three watches. One watch has two hands. Each of the other two watches has three hands. How many hands are on the watches altogether? Show or tell how you got your answer.
9. Shannon solved Question 8 this way:

2 + 2 + 2 = 6 watch hands

Use the In Twos Through Twelves pages in the Student Activity Book to write lists of things. These lists will be used to write multiplication problems.