Rational Numbers

Question 1

4. Which of the following represents a rational number?

Accepted Answer

A fraction like 7/9

Question 2

10. Which situation best represents a negative rational number?

Accepted Answer

Losing 10 points on a quiz

Question 3

5. In Chicago, it was -5°F in the morning and 18°F in the afternoon. What was the temperature change?

Accepted Answer

23°F

Question 4

16. You earned $45 last week and spent $62. What is your net gain or loss?

Accepted Answer

$17 loss

Question 5

13. Which number is not a rational number?

Accepted Answer

\sqrt{5}

Question 6

11. You owe your friend $15. If you pay back $7, what is your new balance?

Accepted Answer

-$8

Question 7

14. A recipe calls for 2/3 cup of oil. If you make half the recipe, how much oil do you use?

Accepted Answer

\frac{1}{3}cup

Question 8

8. The temperature dropped from 10°F to -4°F. What is the change in temperature?

Accepted Answer

14°F

Question 9

19. A freezer is set at -12.5°C. The fridge is at 3°C. What is the temperature difference?

Accepted Answer

15.5°C

Question 10

1. Which of these numbers is a rational number?

Accepted Answer

4.75

Question 11

9. Liam ran 2.4 miles each day for 5 days. How many miles did he run total?

Accepted Answer

12 miles

Question 12

15. A stock price changes by -$2.25 each day. After 6 days, how much has it changed?

Accepted Answer

-$13.50

Question 13

2. Jenna spends $3.50 on lunch every school day. How much does she spend in 5 days?

Accepted Answer

$17.50

Question 14

6. A bank account starts at $250. After 3 withdrawals of $40, what is the new balance?

Accepted Answer

$130

Question 15

18. A hiker climbs from -30 ft below sea level to 50 ft above. How far did they climb?

Accepted Answer

80 ft

Question 16

20. A swimmer’s lap times are: 1.2 min, 1.3 min, 1.4 min, and 1.1 min. What is the average time?

Accepted Answer

1.25 min

Question 17

3. A scuba diver is 12.3 meters below sea level. What is the diver’s elevation?

Accepted Answer

-12.3 m

Question 18

7. A chef needs to divide 3/4 of a cup of sugar equally into 3 bowls. How much sugar goes in each bowl?

Accepted Answer

\frac{1}{4}cup

Question 19

17. If it’s -3°F and the temperature rises 9°F, what’s the new temperature?

Accepted Answer

6°F

Question 20

12. A submarine dives 20 meters every minute. After 4 minutes, how deep is it?

Accepted Answer

-80 meters

Questions 20