Integer Operations

One morning, the temperature was 5 degrees below zero Fahrenheit (F). By noon, the temperature rose 20 degrees F and then dropped 8 degrees F by evening. What was the evening temperature?

• 17 degrees below zero
• 15 degrees below zero
• 12 degrees above zero
• 7 degrees above zero

A dolphin is swimming 10 feet below the surface. It descends another 12 feet before rising 4 feet. Which of the following would be the correct way to solve this word problem?

• -10 + -12 + -4
• -10  - 12 + 4
• 10 - 12 - 4
• -10 + 12 + 4

The height of the water in a pond decreases 3 millimeters each week due to evaporation.  What is the change in the height of the water over a four week period?

• -3 mm
• -84 mm
• -12 mm
• 3/4 mm

Tags

CCSS.7.NS.A.3

Anna wants to make 4 sets of curtains. Each set requires 5 1/8 yards of fabric. How much fabric does she need? 

• 19 1/2
• 20 1/8
• 20 1/2
• 19 1/8

Mr. and Mrs. Simpson went to two movies. The first movie lasted 2 1/3 hours and the second one lasted 1 4/5 hours. How much longer was the first than the second movie?

• 8/15 hour
• 2/15 hour
• 7/15 hour
• 1/15 hour

Which number does not represent an integer?

• -1
• - 1 5/8
• -15/3
• 0

Which number represents a whole number?

• 16/4
• -16/4
• 17/2
• 9/2

A submarine is submerged to a depth of 650 feet below sea level. It ascends 225 feet and then dives 50 feet. Write an addition expression that represents the new position of the submarine.

• −650 + -225 + (−50) =  −625
• 650 + 225 + (−50) =  450
• −650 - 225 + (−50) =  -785
• −650 + 225 + (−50) =  −475