Unit 6, Lesson 9

Dealing with Negative Numbers

Grade 7

Practice

Problem 1

Student Task Statement

Solve each equation.

Practice

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Problem 2

Student Task Statement

Here is an equation . Write three different equations that have the same solution as . Explain or show your reasoning.

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Problem 3

ForLesson 3: Reasoning about Equations with Tape Diagrams

Student Task Statement

Select all the equations that represent the diagram.

Tape diagram, 3 equal parts each marked x + 5, total 18.

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Problem 4

ForLesson 2: Reasoning about Contexts with Tape Diagrams

Student Task Statement

There are 88 seats in a theater. The seating in the theater is split into 4 identical sections. Each section has 14 red seats and some blue seats.

Draw a tape diagram to represent the situation.
What unknown amounts can be found by using the diagram or reasoning about the situation?

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Problem 5

ForLesson 4: Reasoning about Equations and Tape Diagrams (Part 1)

Student Task Statement

Match each story to an equation.

A stack of nested paper cups is 8 inches tall. The first cup in the stack is 4 inches tall, and each of the other cups in the stack adds inch to the height of the stack.
A baker uses 4 cups of flour. She uses cup to flour the counters and the rest to make 8 identical muffins.
Elena has an 8-foot piece of ribbon. She cuts off a piece that is of a foot long and cuts the remainder into 4 pieces of equal length.

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Dealing with Negative Numbers

Practice

Problem 1

Student Task Statement

Lesson 9 Resources

Problem 2

Student Task Statement

Problem 3

Student Task Statement

Problem 4

Student Task Statement

Problem 5

Student Task Statement