M7 U4 L6 and 7 Practice Problems

Unit 4 Lesson 6/7
Practice

Multiple Choice

Is y an increase or a decrease relative to x? What percent increase or decrease?

• Increase of 75%

• Increase of 25%

• Decrease of 75%

• Decrease of 25%

Multiple Choice

Is y an increase or a decrease relative to x? What percent increase or decrease?

• Increase of 75%

• Increase of 25%

• Decrease of 75%

• Decrease of 25%

Example of Writing Percent Increase or Decrease

This year, there was 40% more snow than last year.

Written as a percent increase or decrease of initial amount...

"The amount of snow this year is 140% of the amount of snow last year."

We add 40% to 100% since there was 40% MORE snow than last year.

Multiple Choice

Write the percent increase or decrease as a percentage of the initial amount.

1. "This year, there were 25% fewer sunny days than last year."

• 1. The number of sunny days this year is 75% of the number of sunny days last year.

• 1. The number of sunny days this year is 125% of the number of sunny days last year.

• 1. The number of sunny days this year is 25% of the number of sunny days last year.

Multiple Choice

Write the percent increase or decrease as a percentage of the initial amount.

1. "This year, there were 25% fewer sunny days than last year."

• 1. The number of sunny days this year is 75% of the number of sunny days last year.

• 1. The number of sunny days this year is 125% of the number of sunny days last year.

• 1. The number of sunny days this year is 25% of the number of sunny days last year.

Draw

Draw a diagram to represent the following situation. 

1. The amount of flour that the bakery used this month was a 50% increase relative to last month.

​Here is an example of what your diagram could look like.

Draw

Draw a diagram to represent the following situation. 

1. The amount of milk that the bakery used this month was a 75% decrease relative to last month.

​Here is an example of what your diagram could look like.

Multiple Choice

A bakery used 25% more butter this month than last month. If the bakery used 240 kilograms of butter last month, how much did it use this month?

• 60 kilograms

• 180 kilograms

• 265 kilograms

• 300 kilograms

Multiple Choice

Last week, the price of oranges at the farmer's market was $1.75 per pound. This week, the price has decreased by 20%. What is the price of oranges this week?

• $0.35 per pound

• $1.40 per pound

• $2.05 per pound

• $1.55 per pound