Adding Subtracting Rational Numbers Like Bases

A girl's hair is 12 ⅜ inches long. If she has 2 1/2 inches cut off, how long will her hair be?

• 10 1/4 inches

• 10 3/16 inches

• 9 7/8 inches

• 10 7/8 inches

9 + -6.73

• 2.27

• -2.27

• 15.73

• -15.73

What is 7 1/2 - 5 1/3

• 3  1/3

• 2  1/3

• -3  1/3

• 2  1/6

How much more is in account C than B?

• $64.05

• $40.78

• $125.51

• $134.12

• 11-8=3
• 11-3=8
• 3+8=11

Use the number line to find the sum.
-7 + 2 =

• -5

• 5

• -9

• 9

• $82.09
• $82.61
• $82.85
• $83.37

What equation is modeled?

• 7 + -6 = -6

• 7 + -13 = -6

• 7 + -14 = -6

• -6 + -14 = -6

-8⅚ + -2⅕

• -11 1/30

• 11 1/30

• -10 6/11

• 10 6/11

-6.5 + (-0.5) 

• -7

• 7

• 6

• -6