PARCC Averages and Rounding Practice Questions

Question 1

1. The average of six numbers is 4. If the average of two of those numbers is 2, what is the average of the other four numbers?

Accepted Answer

5

Answer

6

Answer

7

Answer

8

Answer

9

Question 2

2. Kate got a 56 on her first math test. On her second math test, she raised her grade by 12%. What was her grade?

Accepted Answer

62.7

Answer

67.2

Answer

68.0

Answer

72.3

Question 3

3. A skyscraper is 548 meters high. The building's owners decide to increase its height by 3%. How high would the skyscraper be after the increase?

Accepted Answer

564 meters

Answer

551 meters

Answer

555 meters

Answer

562 meters

Question 4

4. Janet makes homemade dolls. Currently, she produces 23 dolls per month. If she increased her production by 18%, how many dolls would Janet produce each month?

Accepted Answer

27

Answer

32

Answer

38

Answer

40

Question 5

5. A class contains an equal number of boys and girls. The average height of the boys is 62 inches. The average height of the all the students is 60 inches. What is the average height of the girls in the class?

Accepted Answer

58 inches

Answer

57 inches

Answer

59 inches

Answer

60 inches

Question 6

6. Elijah drove 45 miles to his job in an hour and ten minutes in the morning. On the way home in the evening, however, traffic was much heavier and the same trip took an hour and a half. What was his average speed in miles per hour for the round trip?

Accepted Answer

33 3\/4

Answer

30

Answer

45

Answer

32 1\/2

Question 7

7. If Joey and Katrina hike an average of 3 miles per hour, about how long will it take them hike both the Beaverton Falls trail (7.25 miles) and the Copper Creek trail (4.75 miles)?

Accepted Answer

4 hours

Answer

3 hours

Answer

3.5 hours

Answer

4.5 hours

Question 8

8. A pasta salad was chilled in the refrigerator at 35° F overnight for 9 hours. The temperature of the pasta dish dropped from 86° F to 38° F. What was the average rate of cooling per hour?

Accepted Answer

Question 9

9. Rachel spent $24.15 on vegetables. She bought 2 lbs of onions, 3 lbs of carrots, and 1 1\/2 lbs of mushrooms. If the onions cost $3.69 per lb, and the carrots cost $ 4.29 per lb, what is the price per lb of mushrooms?

Accepted Answer

$2.60

Answer

$2.25

Answer

$2.80

Answer

$3.10

Answer

$2.75

Question 10

10. A roast was cooked at 325 °F in the oven for 4 hours. The internal temperature rose from 32 °F to 145 °F. What was the average rise in temperature per hour?

Accepted Answer

28.25°F\/hr

Answer

20.2°F\/hr

Answer

32.03°F\/hr

Answer

37°F\/hr