Open Up - Grade 7 - Mathematics - Unit 6 - Lesson 13 - Formative Library | Library

1

1.

For each inequality, find two values for x that make the inequality true and two values that make it false.

x + 3 > 70

1

2.

For each inequality, find two values for x that make the inequality true and two values that make it false.

x + 3 < 70

1

3.

For each inequality, find two values for x that make the inequality true and two values that make it false.

-5x < 2

1

4.

For each inequality, find two values for x that make the inequality true and two values that make it false.

5x < 2

1

5.

Here is an inequality: -x > 18.

List some values for x that would make this inequality true.

1

6.

Here is an inequality: -x > 18.

How are the solutions to the inequality -3x\geq 18 different from the solutions to -3x > 18? Explain your reasoning.

1

7.

Match each sentence with the inequality that could represent the situation.

		x + 2 < 20
		x - 2 < 20
		2x < 20
		\frac{1}{2}x < 20

1

8.

Here are the prices for cheese pizza at a certain pizzeria:
You had a coupon that made the price of a large pizza $13.00. For what percent off was the coupon?

1

9.

Here are the prices for cheese pizza at a certain pizzeria:
Your friend purchased a medium pizza for $10.31 with a 30% off coupon. What is the price of a medium pizza without a coupon?(round to the nearest cent)

1

10.

Here are the prices for cheese pizza at a certain pizzeria:
Your friend has a 15% off coupon and $10. What is the largest pizza that your friend can afford, and how much money will be left over after the purchase?(round to the nearest cent)

1

11.

Select all the stories that can be represented by the diagram.

Andre studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science, and history.

Lin spends $3 on 7 markers and a $1 pen.

Diego spends $1 on 7 stickers and 3 marbles.

Noah shares 7 grapes with 3 friends. He eats 1 and gives each friend the same number of grapes.

Elena spends $7 on 3 notebooks and a $1 pen.

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