BKSB Numeracy Skills 5

Question 1

Solve for x: 5x − 8 = 22.

Accepted Answer

x = 6

Answer

5x = 22 + 8 = 30; x = 30 ÷ 5 = 6.

Question 2

What is 0.08 expressed as a percentage?

Accepted Answer

8%

Answer

Multiply by 100 to convert a decimal to a percentage: 0.08 × 100 = 8%.

Question 3

A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of randomly picking a blue marble?

Accepted Answer

3/10

Answer

Total marbles = 10; P(blue) = 3/10.

Question 4

What is the volume of a rectangular box that is 5 cm long, 4 cm wide, and 3 cm tall?

Accepted Answer

60 cm³

Answer

Volume = length × width × height = 5 × 4 × 3 = 60 cm³.

Question 5

A worker earns $12.50 per hour and works 38 hours in a week. What are the total gross earnings?

Accepted Answer

$475.00

Answer

$12.50 × 38 = $475.00.

(BKSB) Basic and Key Skills Builder Practice Test