Page 46 - TB_6B

Method 2 Use a number line. 2 5=3
4 2= 6
321012345
7 65432101 Move 2 units to the left from 0.
Move 4 units to the left from 0. Then move 5 units to the right.
Then move 2 more units to the left.

2 . Add the integers using the method above.

a. 3 1 = 4 b. 4 2

4 20 2 4 4 20 2 4

c. 3 + 5 d. 6 4

4 20 2 4 10 8 6 4 2 0

3 . Add the integers. b. 4 5
d. 7 10
a. 7 8

c. 9 3

20. Balloons and Stones 35