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Biblioteka

Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 8

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Pitanje 1
1.

Here is a hanger:

Write an equation to represent the hanger.

Pitanje 2
2.

Here is a hanger:

Solve the equation by reasoning about the equation or the hanger.

Pitanje 3
3.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what x means in the equation.

Pitanje 4
4.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what 9 means in the equation.

Pitanje 5
5.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what 3 means in the equation.

Pitanje 6
6.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what x + 2 means in the equation.

Pitanje 7
7.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what 3(x + 2) means in the equation.

Pitanje 8
8.

Explain how each part of the equation 9 = 3(x +2) is represented in the hanger.

explain what the equal sign means in the equation.

Pitanje 9
9.

Select the word from the following list that best describes each situation.

You deposit money in a savings account, and every year the amount of money in the account increases by 2.5%.

Pitanje 10
10.

Select the word from the following list that best describes each situation.

For every car sold, a car salesman is paid 6% of the car’s price.

Pitanje 11
11.

Select the word from the following list that best describes each situation.

Someone who eats at a restaurant pays an extra 20% of the food price. This extra money is kept by the person who served the food.

Pitanje 12
12.

Select the word from the following list that best describes each situation.

An antique furniture store pays $200 for a chair, adds 50% of that amount, and sells the chair for $300.

Pitanje 13
13.

Select the word from the following list that best describes each situation.

The normal price of a mattress is $600, but it is on sale for 10% off.

Pitanje 14
14.

Select the word from the following list that best describes each situation.

For any item you purchase in Texas, you pay an additional 6.25% of the item's price to the state government.

Pitanje 15
15.

Clare drew this diagram to match the equation 2x + 16 = 50, but she got the wrong solution as a result of using this diagram.

What value for x can be found using the diagram?

Pitanje 16
16.

Clare drew this diagram to match the equation 2x + 16 = 50, but she got the wrong solution as a result of using this diagram.

Show how to fix Clare’s diagram to correctly match the equation.(show your work)

Use the new diagram to find a correct value for x.(Short answer)

Pitanje 17
17.

Clare drew this diagram to match the equation 2x + 16 = 50, but she got the wrong solution as a result of using this diagram.

Explain the mistake Clare made when she drew her diagram.