Core Academic Skills Assessment Mathematics: Number and Quantity 3

Question 1

What is 15% of 240?

Accepted Answer

36

Answer

0.15 × 240 = 36.

Question 2

Which fraction is closest in value to 0.714?

Accepted Answer

5/7

Answer

5/7 ≈ 0.7143, which is the closest to 0.714.

Question 3

A number is multiplied by itself and the result is 0.0625. What is the number?

Accepted Answer

0.25

Answer

0.25 × 0.25 = 0.0625, so the number is 0.25.

Question 4

How many significant figures are in the number 0.00420?

Accepted Answer

3

Answer

Leading zeros are not significant; 4, 2, and the trailing 0 are, giving 3 significant figures.

Question 5

A population of bacteria doubles every 3 hours. If there are 500 bacteria now, how many will there be in 9 hours?

Accepted Answer

4000

Answer

9 hours = 3 doubling periods; 500 × 2³ = 500 × 8 = 4000.

Core Academic Skills Assessment Practice Test