Math Number Sense and Operations

Question 1

Evaluate: 3 + 4 × 2 − 1

Accepted Answer

10

Answer

Following order of operations (PEMDAS), multiplication is performed first: 4 × 2 = 8, then left to right: 3 + 8 − 1 = 10.

Question 2

Which property is illustrated by: 5 × (3 + 4) = 5 × 3 + 5 × 4?

Accepted Answer

Distributive Property

Answer

The Distributive Property states that a(b + c) = ab + ac, which is exactly what is shown here.

Question 3

What is the absolute value of −17?

Accepted Answer

17

Answer

Absolute value represents the distance from zero on the number line, so |−17| = 17.

Question 4

Which of the following is a prime number?

Accepted Answer

53

Answer

53 is prime because it has no divisors other than 1 and itself; 51 = 3 × 17, 57 = 3 × 19, and 1 is not prime by definition.

Question 5

What is the least common multiple (LCM) of 6 and 8?

Accepted Answer

24

Answer

Since 6 = 2 × 3 and 8 = 2³, the LCM = 2³ × 3 = 24.

Math Practice Test