Homework Explained - Math Practice 101

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Chapter 6: Equations and Inequalities; Lesson 1: One-Step Addition And Subtraction Equations

• Question 10

The sum of the measures of the angles of a triangle is 180°. Write and solve an equation to find the missing measure.

• Question 11

The sum of the measures of a quadrilateral is 360°. Write and solve an equation to find the missing measure.

H.O.T. Problems Higher Order Thinking

• Question 12

Reason Inductively Write an addition equation and a subtraction equation that have 10 as a solution.

• Type below:
• Question 13

Find the Error Aisha is finding b + 5 = -8. Find her mistake and correct it.

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• Question 14

Reason Abstractly Suppose x + y = 11 and the value of x increases by 2. If their sum remains the same, what must happen to the value of y?

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• Question 15

The Oriental Pearl Tower in China is 1,535 feet tall. It is 280 feet shorter than the Canadian National Tower in Canada. Which equation can be used to find the height of the Canadian National Tower?

• 1,535 + h = 280
• h = 1,535 - 280
• 1,535 = h - 280
• 280 - h = 1,535

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