College Math Placement Test Arithmetic 3

Question 1

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 2

Evaluate: |−9 + 3|

Accepted Answer

6

Answer

−9 + 3 = −6, and |−6| = 6.

Question 3

A store marks up items by 30%. If an item costs $80 wholesale, what is the selling price?

Accepted Answer

$104

Answer

Markup = 30% × 80 = $24; selling price = 80 + 24 = $104.

Question 4

Which number is prime?

Accepted Answer

61

Answer

61 has no factors other than 1 and itself; 51=3×17, 57=3×19, 63=9×7.

Question 5

Convert 3/7 to a decimal rounded to the nearest hundredth.

Accepted Answer

0.43

Answer

3 ÷ 7 ≈ 0.4286, which rounds to 0.43.

College Math Placement Test Practice Test