Modeling Add and Subtracting Number Lines

Subtract 78 - 20 on the number line. What is the difference?

• 68

• 57

• 58

• 48

Subtract 85 - 8 on the number line. What is the difference?

• 93

• 76

• 78

• 77

Subtract 56 - 20 on the number line. What is the difference?

• 26

• 36

• 46

• 76

Subtract 87 - 6 on the number line. What is the difference?

• 80

• 82

• 93

• 81

Subtract 48 - 30 on the number line. What is the difference?

• 18

• 8

• 28

• 78

Subtract 65 - 8 on the number line. What is the difference?

• 57

• 58

• 60

• 55

Subtract 54 - 9 on the number line. What is the difference?

• 46

• 63

• 48

• 45

Subtract 49 - 9 on the number line. What is the difference?

• 58

• 40

• 41

• 39

Subtract 66 - 50 on the number line. What is the difference?

• 16

• 26

• 18

• 36

Which number should go in the red box?

• 160

• 15

• 159

• 12