WVGSA Mathematics 5

Question 1

Which property is illustrated by: 7 + (3 + 5) = (7 + 3) + 5?

Accepted Answer

Associative Property

Answer

The Associative Property of Addition states that grouping of addends does not change the sum.

Question 2

What is the slope of a line that passes through points (2, 4) and (6, 12)?

Accepted Answer

2

Answer

Slope = (12 − 4) ÷ (6 − 2) = 8 ÷ 4 = 2.

Question 3

Which of the following represents 4.5 × 10³ in standard notation?

Accepted Answer

4,500

Answer

4.5 × 10³ = 4.5 × 1,000 = 4,500.

Question 4

A spinner has 8 equal sections numbered 1–8. What is the probability of landing on a prime number?

Accepted Answer

1/2

Answer

Prime numbers 1–8 are 2, 3, 5, 7 (four primes), so P = 4/8 = 1/2.

Question 5

Two angles are supplementary. One angle measures 115°. What is the measure of the other angle?

Accepted Answer

65°

Answer

Supplementary angles sum to 180°, so the other angle = 180 − 115 = 65°.

(WVGSA) West Virginia General Summative Assessment Practice Test