Lesson 5-14: Recalling Percent Change

A scooter cost $160.  The cost of a pair of roller skates is 20% off the cost of the scooter.  Which of the following expressions below would find the cost of the roller skates?

• 160(0.20)

• 160(0.80)

• 160(1.20)

• 160+0.20

A scooter cost $160.  A bicycle cost 20% more than the scooter. Which expression below represents the given situation.

• 160(1.20)

• 160(0.20)

• 160(1.80)

• 160(0.80)

A scooter cost $160.  A skateboard cost 25% less than the bicycle. Which of the following expression below would find the cost of the skateboard?

• 160(1.75)

• 160(1.25)

• 160(0.25)

• 160(0.75)

A car cost $12,000 to purchase with an additional 8% sales tax. Which of the following expressions below would find the total cost of the car?

• 12,000(1.92)

• 12,000(1.08)

• 12,000(0.08)

• 12,000(0.92)

Burritos are on sale for 30% off. Your burrito normally costs $8.50. Which of the following expressions below would find the new cost of your burrito?

• 8.50(.70)

• 8.50(1.30)

• 8.50(0.30)

• 8.50(1.70)

A pair of shoes that originally cost $79 are on sale for 35% off. Which of the following expressions below would find the sale price of the shoes?

• 79(1.35)

• 79(1.65)

• 79(0.35)

• 79(0.65)

A one night stay at a hotel in Anaheim, CA cost $160.  Hotel room occupancy tax is 15%. Which of the following expressions below represent the total cost of the hotel stay?

• 160(0.85)

• 160(0.15)

• 160(1.15)

• 160(1.85)

Teachers receive a 30% off discount at a museum. An adult ticket cost $24. Which of the following expressions below represent the deduced ticket price?

• 24(0.70)

• 24(0.30)

• 24(1.70)

• 24(1.30)

The population of a city was 842,000 ten years ago. The city now has 2% more people than it had then. Which of the following expressions below represents the new population?

• 842,000(.20)

• 842,000(1.98)

• 842,000(1.02)

• 842,000(0.98)

After a major hurricane, 46% of the 90,500 households on an island lost their access to electricity. Which of the following expressions represents the number of houses that still have electricity?

• 90,500(0.46)

• 90,500(1.54)

• 90,500(1.46)

• 90,500(0.54)