DLM Math Concepts 4

Question 1

Which of the following is an example of a prime number?

Accepted Answer

23

Answer

23 has no factors other than 1 and itself, making it prime.

Question 2

A train travels 60 miles in 1 hour. How far does it travel in 3 hours at the same speed?

Accepted Answer

180 miles

Answer

60 × 3 = 180 miles.

Question 3

What is the perimeter of a square with a side length of 7 inches?

Accepted Answer

28 in

Answer

Perimeter = 4 × side = 4 × 7 = 28 inches.

Question 4

Which number rounds to 400 when rounded to the nearest hundred?

Accepted Answer

449

Answer

449 rounds down to 400 because the tens digit (4) is less than 5.

Question 5

A data set shows test scores: 70, 80, 90, 80, 60. What is the mode?

Accepted Answer

80

Answer

80 appears twice, more than any other score, so it is the mode.

(DLM) Dynamic Learning Maps Practice Test