Mixed Problems
15 x - 4
- 60
When her elevator was out of service, Debi walked down 21 flights of stairs. She stopped to rest after every 3 flights. How many times did Debi stop to rest?
21/3 = 7 times
Four investors lost 24 percent of their combined investment in a company. What percent did each investor lose?
- 24 / 4 = - 6
-7 x (-9)
63
35 ÷ - 7
In 1943, the temperature in Rapid City, South Dakota, fell about 45 degrees in 5 minutes. What was the average drop in temperature per minute?
9 degrees
Jaya bought her dog Spot a huge bone. Spot chews 4 inches off the bone every day. What number describes the change in the length of the bone after 3 days?
- 4 (3) = - 12
Four college roommates rented an apartment together. When they moved out, they were charged $1500 for damages to the carpet and walls. The roommates agreed to equally share the cost. What integer represents how much each person will have to pay?
$375
7 x (-11)
- 77
- 24 ÷ - 8
3
Louisa used a gift card to pay for 3 meals at a vegetarian restaurant. Each meal cost $7. By how much has the value of the gift card changed?
$ 21
At a restaurant, 8 plates are accidently broken every day for a week. What number represents the change in the number of plates the restaurant has?
- 8 (7) = - 56
Bob bought a Ford Expedition for his family. After five years, the SUV was worth $10,000 less than what he paid for it. What integer represents how much value the SUV lost each year?
- $2,000
-4(-2)(3)(-2)(3)
- 144
- 50 ÷ 5 ÷ - 5
2
(- 8) x (- 9) ÷ (- 2)
- 36
You play a game where you score - 6 points on the first turn and on each of the next 3 turns. What is your score after those 4 turns?
- 24
The value of a car decreased by $5,100 over 3 years. On average, by how much did its value decrease each year?
- 5100 / 3 = - $1,700
2(- 1/4)(- 16)(3)
24
(1/2) ÷ (-1/4)
- 2
Adam was learning to play a new board game. He spun the spinner 5 times, and each time it landed on “Go back 4 spaces.” What number describes the change in the position of Adam’s game piece over these 5 spins?
- 20
The outdoor temperature increases 3 degrees each hour for 5 hours. What is the change in temperature at the end of those 5 hours?
3 (5) = 15 degrees
The low temperature for five days was −5°, −7°, −2°, 2°, and −3°. What was the average low temperature for those days?
−3
(- 3/4)(- 20/3)(- 2)(4)
- 40
(- 3/5) ÷ (1/10)