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6-8 Grade 7 Unit 8 Lesson 3

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K-5 Math •6-8 Math 9-12 Math

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Grade 6 •Grade 7 Grade 8

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Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 •Unit 8 Unit 9

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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

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Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9

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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

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

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Unit 8, Lesson 3

What Are Probabilities?

Grade 7

Practice

Problem 1

Student Task Statement

List the sample space for each chance experiment.

flipping a coin
selecting a random season of the year
selecting a random day of the week

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Problem 2

Lesson 3 Resources

Student Materials Student Materials in Spanish

Student Task Statement

A computer randomly selects a letter from the alphabet.

How many different outcomes are in the sample space?
What is the probability the computer produces the first letter of your first name?

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Problem 3

Student Task Statement

What is the probability of selecting a random month of the year and getting a month that starts with the letter “J”? If you get stuck, consider listing the sample space.

to access Practice Problem Solutions.

Problem 4

ForLesson 4: Proportional Relationships and Equations

Student Task Statement

represents an object’s weight on Earth and represents that same object’s weight on the moon. The equation represents the relationship between these quantities.

What does the represent in this situation?
Give an example of what a person might weigh on Earth and on the moon.

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Problem 5

ForLesson 13: Decomposing Bases for Area

Student Task Statement

Here is a diagram of the base of a bird feeder which is in the shape of a pentagonal prism. Each small square on the grid is .

The distance between the two bases is 8 in. What will be the volume of the completed bird feeder?

diagram of the base of a bird feeder which is in the shape of a pentagonal prism. Each small square on the grid is 1 square inch.

to access Practice Problem Solutions.

Problem 6

ForLesson 14: Surface Area of Right Prisms

Student Task Statement

Find the surface area of the triangular prism.

A triangular prism with a triangular base. The sides of the triangle have lengths of 3 and 4 units, and a hypotenuse with a length of 5 units. The height of the prism has a length of 4 units.

to access Practice Problem Solutions.