WVGSA Mathematics 5 — Questions and Answers
Question 1: Which property is illustrated by: 7 + (3 + 5) = (7 + 3) + 5?
- Commutative Property
- Distributive Property
- Associative Property (Correct answer)
- Identity Property
Correct answer: Associative Property
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)?
- 1
- 2 (Correct answer)
- 3
- 4
Correct answer: 2
Slope = (12 − 4) ÷ (6 − 2) = 8 ÷ 4 = 2.
Question 3: Which of the following represents 4.5 × 10³ in standard notation?
- 450
- 4,500 (Correct answer)
- 45,000
- 450,000
Correct answer: 4,500
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?
- 1/4
- 3/8
- 1/2 (Correct answer)
- 5/8
Correct answer: 1/2
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?
- 55°
- 65° (Correct answer)
- 75°
- 85°
Correct answer: 65°
Supplementary angles sum to 180°, so the other angle = 180 − 115 = 65°.
Question 6: Evaluate: −3 + (−7) − (−4)
- −10
- −6 (Correct answer)
- −4
- 4
Correct answer: −6
−3 + (−7) − (−4) = −3 − 7 + 4 = −10 + 4 = −6.
Question 7: A table of values shows x: 1, 2, 3, 4 and y: 5, 10, 15, 20. Which equation represents this relationship?
- y = x + 4
- y = 4x + 1
- y = 5x (Correct answer)
- y = 2x + 3
Correct answer: y = 5x
Each y-value equals 5 times the x-value, so y = 5x.
WVGSA Mathematics 5
Which property is illustrated by: 7 + (3 + 5) = (7 + 3) + 5?