Unit 9, Lesson 14

Recalling Percent Change

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Integrated Math 1

14.1

Warm-up

A scooter costs $160.

For each question, show your reasoning.

A photograph of a stand-on electric scooter.

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?

description and question

expression 1

expression 2 (using only multiplication)

A one-night stay at a hotel in Anaheim, CA, costs $160. Hotel room occupancy tax is 15%. What is the total cost of a one-night stay?

Teachers receive a 30% educators' discount at a museum. An adult ticket costs \$24. How much would a teacher pay for admission into the museum?

The population of a city was 842,000 ten years ago. The city now has 2% more people than it had then. What is the population of the city now?

After a major hurricane, 46% of the 90,500 households on an island lost their access to electricity. How many households still have electricity?

Two years ago, the number of students in a school was 150. Last year, the student population increased 8%. This year, it increased about 8% again. What is the number of students this year?

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Recalling Percent Change

Warm-up

Activity

Standards Alignment

Building On

7.EE.3

Addressing

Building Toward

Activity

Standards Alignment

Building On

7.EE.3

Addressing

Building Toward

Student Lesson Summary

Standards Alignment

Building On

7.EE.3

Addressing

Building Toward

F-LE.2

F-LE.2