One Step Equation Rational Numbers

• add both sides by 2.17

• subtract both sides by 2.17

• multiply both sides by 2.17

• divide both sides by 2.17

Andrew has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Andrew needs to save to by the IPOD?

• 55 + x = 145

• 145x = 55

• 55 - x = 145

• 145 (55) = x

Cicely had $22.50. Over the weekend she received some money for cleaning out the attic. She now has $32. Which equation represents how much money she received?

• 22.50/ x = 32

• 32/ 22.50 = x

• 22.50 + x = 32

• 32 - x = 22.50

WRITE AN EQUATION
After paying $5.12 for a salad, Norachai has $27.10. How much money did he have before buying the salad?

• 27.10+5.12=x

• 27.10-5.12=x

• x-5.12=27.10

• 5.12+x=27.10

• x=5.9

• x=3.3

• x=4.1

• x=7

• w=12

• w=42.2

• w=22.3

• w=16.4

½x = 4

• 8

• 16

• 2

Solve the equation. Check your solution.

• -90

• 90

• -40

• -180

 d - 3/7 = 5/7

• 8/7

• 6/7

• 4/7

• 3/7

Solve   M - 3.5 = -9.2

• M = 5.7

• M = -5.7

• M = -12.7

• M = 12.7