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IM Alg1.5.14 Lesson: Recalling Percent Change

A scooter costs $160. For each question, show your reasoning.

The cost of a pair of roller skates is 20% of the cost of the scooter. How much do the roller skates cost?

A bicycle costs 20% more than the scooter. How much does the bicycle cost?

A skateboard costs 25% less than the bicycle. How much does the skateboard cost?

You need to pay 8% tax on a car that costs $12,000. What will you end up paying in total? Show your reasoning.

Burritos are on sale for 30% off. Your favorite burrito normally costs $8.50. How much does it cost now? Show your reasoning.

A pair of shoes that originally cost $79 are on sale for 35% off. Does the expression represent the sale price of the shoes (in dollars)? Explain your reasoning.

Come up with some strategies for mentally adding 15% to the total cost of an item.

Complete the table so that each row has a description and two different expressions that answer the question asked in the description. The second expression should use only multiplication. Be prepared to explain how the two expressions are equivalent.