OAR OAR Math Skills: Arithmetic and Number Operations 3

Question 1

What is the square root of 196?

Accepted Answer

14

Answer

14 × 14 = 196, so the square root of 196 is 14.

Question 2

A store marks up an item 40% from its cost of $85. What is the selling price?

Accepted Answer

$119

Answer

40% of $85 = $34, so the selling price is $85 + $34 = $119.

Question 3

Which of the following is a prime number?

Accepted Answer

37

Answer

37 has no factors other than 1 and itself, making it prime.

Question 4

What is 2³ × 2²?

Accepted Answer

32

Answer

When multiplying same-base exponents, add the exponents: 2^(3+2) = 2⁵ = 32.

Question 5

A crew of 6 sailors completes a task in 4 hours. How long would the same task take 8 sailors working at the same rate?

Accepted Answer

3 hours

Answer

Total work = 6 × 4 = 24 person-hours; 24 ÷ 8 = 3 hours.

OAR Test Practice Test