A. Ramirez 7th Lesson 2.1 - Percent of Change

Open Ended

Explain how you would convert a decimal like 0.35 to both a fraction and a percent.

​I Do... DOK 1

Multiple Choice

Which of the following best describes a percent of change?

• A ratio that compares the change in quantity to the original amount

• A way to multiply decimals

• A method to write decimals as fractions

• A type of bar diagram

​I Do... DOK 2

Open Ended

A certain brand of shampoo contains 12 ounces in a bottle. The company decides to redesign the shape of the shampoo bottle. The new type of bottle contains 15 ounces of shampoo. What is the percent of increase in the amount of shampoo the new bottle contains? Use any strategy.

​I Do.. DOK 3

Multiple Select

Which of the following are necessary steps to find the percent of increase?

• Find the difference between the new and original amount

• Divide the difference by the original amount

• Multiply the result by 100

• Add the original and new amounts

Open Ended

Explain the steps involved in finding the percent of increase when given the original and new amounts. Use examples from the images to support your answer.

​We Do... DOK 2

​We Do... DOK 1

​We Do... DOK 3

Open Ended

When resting, a spring measures 73.3 millimeters. When the spring is compressed, it measures 51.29 millimeters. Find the percent of decrease in the length of the spring. Round to the nearest percent if necessary. Use any strategy.

Open Ended

After learning about percent of change and percent of increase/decrease, what is one real-life situation where you could apply these concepts?