CBEST Math 4

Question 1

A number is increased by 40% to get 84. What was the original number?

Accepted Answer

60

Answer

Let the original number be n; 1.4n = 84, so n = 84 ÷ 1.4 = 60.

Question 2

What is the perimeter of a square with a side length of 9 meters?

Accepted Answer

36 m

Answer

Perimeter of a square = 4 × side = 4 × 9 = 36 m.

Question 3

Order from least to greatest: 0.45, 2/5, 47%, 0.4

Accepted Answer

0.4, 2/5, 0.45, 47%

Answer

Converting all to decimals: 0.4, 0.4, 0.45, 0.47; so the order is 0.4 = 2/5 < 0.45 < 47%.

Question 4

A train travels 180 miles in 2.5 hours. What is the train's average speed in miles per hour?

Accepted Answer

72 mph

Answer

Speed = distance ÷ time = 180 ÷ 2.5 = 72 mph.

Question 5

If a shirt originally costs $45 and is on sale for 20% off, what is the sale price?

Accepted Answer

$36

Answer

20% of $45 = $9; $45 − $9 = $36.

CBEST - California Basic Educational Skills Test Practice Test