Name:    Lesson 7 - Relating Subtraction to Addition

Match each subtraction problem with a number line. Relate the subtraction problem to an addition problem if you need to.
 a. e. b. f. c. g. d. h.

1.

138 - 73 = 65

2.

103 - 57 = 46

3.

157 - 68 = 89

4.

184 - 76 = 108

5.

164 - 92 = 72

6.

127 - 64 = 63

7.

122 - 56 = 66

8.

153 - 27 = 126

9.

Lucas has 156 pennies. Brenda has 85 pennies. How many more pennies does Lucas have?
 a. 156 - 85 = 81; Lucas has 81 more pennies. b. 156 - 85 = 91; Lucas has 91 more pennies. c. 156 - 85 = 71; Lucas has 71 more pennies. d. 156 - 85 = 61; Lucas has 61 more pennies.

10.

Billie’s photo album can hold 175 photos. She needs 52 more to fill the album. How many photos does she already have?
 a. 175 - 52 = 113; Billie already has 113 photos in her album. b. 175 - 52 = 143; Billie already has 143 photos in her album. c. 175 - 52 = 133; Billie already has 133 photos in her album. d. 175 - 52 = 123; Billie already has 123 photos in her album.