NAEP Mathematics Grade 3

Question 1

What is 15% of 200?

Accepted Answer

30

Answer

15% of 200 = 0.15 × 200 = 30.

Question 2

A car travels 240 miles in 4 hours. What is its average speed in miles per hour?

Accepted Answer

60 mph

Answer

Speed = distance ÷ time = 240 ÷ 4 = 60 miles per hour.

Question 3

Which of the following numbers is a prime number?

Accepted Answer

41

Answer

41 is prime because it has no factors other than 1 and itself.

Question 4

Simplify the expression: 3x + 5x − 2x

Accepted Answer

6x

Answer

Combine like terms: 3x + 5x − 2x = 6x.

Question 5

A bag contains 5 red marbles and 3 blue marbles. What is the probability of randomly selecting a blue marble?

Accepted Answer

3/8

Answer

Probability = favorable outcomes ÷ total outcomes = 3 ÷ 8 = 3/8.

NAEP - National Assessment of Educational Progress Practice Test