CLAST Arithmetic and Number Sense 3

Question 1

What is the result of (−3) × (−4) ÷ 2?

Accepted Answer

6

Answer

(−3) × (−4) = 12 (negative × negative = positive); 12 ÷ 2 = 6.

Question 2

Which of the following is equivalent to 2.5 × 10⁴?

Accepted Answer

25,000

Answer

2.5 × 10⁴ = 2.5 × 10,000 = 25,000.

Question 3

A store buys an item for $45 and sells it for $63. What is the percent markup?

Accepted Answer

40%

Answer

Markup = (63 − 45) / 45 × 100 = 18/45 × 100 = 40%.

Question 4

What is the greatest common factor (GCF) of 36 and 48?

Accepted Answer

12

Answer

Factors of 36: 1,2,3,4,6,9,12,18,36; factors of 48: 1,2,3,4,6,8,12,16,24,48; GCF = 12.

Question 5

Convert 0.045 to a fraction in lowest terms.

Accepted Answer

9/200

Answer

0.045 = 45/1000; dividing numerator and denominator by 5 gives 9/200.

CLAST - College Level Academic Skills Test Practice Test