NC.7.NS.3 Exam Prep 2

For a school project, Emily needed 2 ⁵/₈ feet of wire. The wire was sold for $0.80 per foot. What was the cost, to the nearest cent, of the wire Emily bought?

• $2.00

• $2.10

• $2.11

• $2.15

Tags

NC.7.NS.3

Which expression has a value greater than 3?

• 4 + (−6)

• −9 + 8

• 10 − 11

• −1 + 5

Tags

NC.7.NS.3

Multiplying -4 by which number results in a product less than -4?

• -3

• 0.1

• ¹/₅

• 2

Tags

NC.7.NS.3

Michael worked on a construction project for 4 ¹/₃ weeks. His take-home pay was $600.00 per week. He put ¹/₄ of his total earnings into a savings account for a down payment on a car and spent the rest. How much money did Michael spend?

Tags

NC.7.NS.3

What is the value of the expression -4r - s if r = -1 and s = 8?

• -4

• -8

• 4

• 8

Tags

NC.7.NS.3

In a math competition, participants gain 9 points for a solved problem and lose 6 points for an unsolved problem. Lisa attempts 18 problems, solving 14 of them and leaving 4 unsolved. What is Lisa's score?

• 102 points

• 126 points

• 132 points

• 186 points

Tags

NC.7.NS.3

• 3

• -3

• -9

• 9

Tags

NC.7.NS.3

During a charity event, a team collected 7 ³/₄ cases of canned goods. They plan to donate 1 ¹/₄ cases to a local food bank directly. The rest will be distributed to individual families, with each family receiving ¹/₂ of a case. How many families can receive canned goods?

• 11 families

• 12 families

• 13 families

• 14 families

Tags

NC.7.NS.3

In a video game, a player's health bar went from +100 points to -20 points (meaning they were defeated) in 15 seconds. What was the average change in health points per second?

• -8 points/second

• -12 points/second

• 8 points/second

• 12 points/second

Tags

NC.7.NS.3

In a mine shaft, the ground temperature increases as you go deeper into the Earth. Assume the temperature increases at a rate of 1.2ºC for every 50 meters of descent. If the temperature at the bottom of the mine shaft, at a depth of 800 meters, is 35ºC, what is the temperature at an emergency shelter located at a depth of 300 meters?

Tags

NC.7.NS.3