Rational numbers operations

The temperature of a substance is -16.6 °C. During an experiment, the temperature of the substance decreases 7.5 °C. What is the final temperature?

• 24.1

• -24.1

• 9.1

• -9.1

Tags

CCSS.7.NS.A.1C

Tue is diving 8 1/2 feet below sea level. He decides to descend 5 1/2 more feet. How many feet below sea level is he?

• 13 2/2

• 14

• -14

• -13 2/2

Tags

CCSS.7.NS.A.1C

Peter hiked for 6 3/4 miles. After resting, Peter hiked back along the same route for 4 1/4 miles. How many more miles does Peter need to hike to return to the place where she started?

• 2 1/2

• -2 1/2

• -11

• 11

Tags

CCSS.7.NS.A.3

Julia spends $5.25 on gas for her lawn mower. She earns $24.00 mowing her neighbor’s yard. What is Julia’s profit?

• 18.75

• -18.75

• 29.75

• .29.75

Tags

CCSS.7.NS.A.3

Maggie bought 12 4/8 kg of apples to make some apple pies. What is the weight of the apples written as a decimal?

• -12.5

• 12.5

• 12.05

• 1.25

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Over 5 months, Ms. Obama wrote 5 equal checks totaling $289.25 to pay for salon services. How much did she withdraw from her account each month to pay for the services?

• 57.85

• -57.85

• 1,446.25

• -1,446.25

Tags

CCSS.7.EE.B.3

Paty has $800 in her bank account.If she writes 6 checks for exactly $29.97 each, What is her account balance after the checks are cashed?

• 179.82

• -179.82

• 620.18

• -620.18

Tags

CCSS.7.NS.A.3

A hot air balloon descended 99.6 meters in 6 seconds. What was the balloon’s average rate of descent in meters per second?

• -16.6

• 16.6

• 597.6

• -597.6

Tags

CCSS.7.EE.B.3

Ruth cuts 3/4 inch sections of wood to make a birdhouse roof. He cut 35 sections. How many inches did she cut?

• 26 1/4

• -26 1/4

• 105/4

• -105/4

Tags

CCSS.7.NS.A.2A

The price of one share of ABC Company declined a total of $65.25 in 5 days. What was the average change of the price of one share per day?

• -13.05

• 13.05

• -326.25

• 326.25

Tags

CCSS.7.EE.B.3