Grade 7 McGraw Hill Glencoe - Answer Keys Answer keys Chapter 5: Expressions; Lesson 3: Properties of Operations

Homework Explained - Math Practice 101

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Grade 7 McGraw Hill Glencoe - Answer Keys

Chapter 5: Expressions; Lesson 3: Properties of Operations

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Independent Practice

Name the property shown by each statement.

Question 1 (request help)
a + (b + 12) = (b + 12) + a

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Question 2 (request help)
(5 + x) + 0 = 5 + x

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Question 3 (request help)
16 + (c + 17) = (16 + c) + 17

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Question 4 (request help)
d · e · 0 = 0

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Question 5 (request help)
Use a Counterexample State whether the conjecture is true or false. If false, provide a counterexample.
Division of whole numbers is associative.

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Question 6 (request help)
Darien ordered a soda for $2.75, a sandwich for $8.50, and a dessert for $3.85. Sales tax was $1.15. Use mental math to find the total amount of the bill. Explain.

$

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Simplify each expression. Justify each step.

Question 7 (request help)
15 + (12 + 8a)

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Question 8 (request help)
(5n · 9) · 2n

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Question 9 (request help)
3x · (7 · x)

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Question 10 (request help)
(4m · 2) · 5m

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