Lesson 7: Practice Problems
Problem 1
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?
Problem 2
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?
Problem 3
Noah thinks the answers to these two questions will be the same. Do you agree with him? Explain your reasoning.
This year, a herd of bison had a 10% increase in population. If there were 550 bison in the herd last year, how many are in the herd this year?
This year, another herd of bison had a 10% decrease in population. If there are 550 bison in the herd this year, how many bison were there last year?
Problem 4 From Unit 4 Lesson 5
Elena walked 12 miles. Then she walked 0.25 that distance. How far did she walk all together? Select all that apply.
Problem 5 From Unit 3 Lesson 8
A circle’s circumference is 600 m. What is a good approximation of the circle’s area?
300 m2
3,000 m2
30,000 m2
300,000 m2
Problem 6 From Unit 2 Lesson 6
The equation
What does the number 3 represent?
How many minutes does it take the snail to get 9 inches from the rock?
How far will the snail be from the rock after 9 minutes?