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6-8 Accelerated 6 Unit 2 Lesson 24

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K-5 Math •6-8 Math 9-12 Math

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•Accelerated 6 Accelerated 7

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17 Lesson 18 Lesson 19 Lesson 20 Lesson 21 Lesson 22 Lesson 23 •Lesson 24 Lesson 25 Lesson 26 Lesson 27 Lesson 28

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9-12

Accelerated 6
Accelerated 7

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Unit 2
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Unit 6
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Lesson 6
Lesson 7
Lesson 8
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Lesson 14
Lesson 15
Lesson 16
Lesson 17
Lesson 18
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Lesson 21
Lesson 22
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Lesson 24
Lesson 25
Lesson 26
Lesson 27
Lesson 28

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IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Unit 2, Lesson 24

Solving Percentage Problems

Accelerated 6

Practice

Problem 1

For each problem, explain or show your reasoning.

160 is what percentage of 40?
40 is 160% of what number?
What number is 40% of 160?

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Lesson 24 Resources

Student Materials

Problem 2

A store is having a 20%-off sale on all merchandise. If Mai buys one item and saves \$13, what was the original price of her purchase? Explain or show your reasoning.

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Problem 3

The original price of a scarf was \$16. During a store-closing sale, a shopper saved \$12 on the scarf. What percentage discount did she receive? Explain or show your reasoning.

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Problem 4

Select all the expressions whose value is larger than 100.

120% of 100
50% of 150
150% of 50
20% of 800
200% of 30
500% of 400
1% of 1,000

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Problem 5

ForLesson 20: Solving Rate Problems

An ant travels at a constant rate of 30 inches every 2 minutes.

At what pace does the ant travel, in minutes per inch?
At what speed does the ant travel, in inches per minute?

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Problem 6

ForLesson 16: Converting Units

Is 3.5 cups more or less than 1 liter? Explain or show your reasoning. (Note: 1 cup is approximately 236.6 milliliters.)

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Problem 7

ForLesson 14: Anchoring Units of Measurement

Name a unit of measurement that is about the same size as each object.

The distance of a doorknob from the floor is about 1 _____________.
The thickness of a fingernail is about 1 _____________.
The volume of a drop of honey is about 1 _____________.
The weight or mass of a pineapple is about 1 _____________.
The thickness of a picture book is about 1 _____________.
The weight or mass of a buffalo is about 1 _____________.
The volume of a flower vase is about 1 _____________.
The weight or mass of 20 staples is about 1 _____________.
The volume of a melon is about 1 _____________.
The length of a piece of printer paper is about 1 _____________.

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