WVGSA Mathematics 2 — Questions and Answers
Question 1: A rectangle has a length of 12 cm and a width of 7 cm. What is its area?
- 84 cm² (Correct answer)
- 38 cm²
- 72 cm²
- 96 cm²
Correct answer: 84 cm²
Area of a rectangle = length × width = 12 × 7 = 84 cm².
Question 2: Which expression is equivalent to 3(x + 4)?
- 3x + 7
- 3x + 4
- 3x + 12 (Correct answer)
- x + 12
Correct answer: 3x + 12
Using the distributive property: 3(x + 4) = 3x + 3×4 = 3x + 12.
Question 3: A bag has 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of randomly selecting a blue marble?
- 1/5
- 3/10 (Correct answer)
- 1/3
- 3/7
Correct answer: 3/10
P(blue) = 3 blue ÷ 10 total = 3/10.
Question 4: What is the value of 2³ × 2²?
- 10
- 12
- 32 (Correct answer)
- 64
Correct answer: 32
2³ × 2² = 2^(3+2) = 2⁵ = 32.
Question 5: On a number line, which value is between −3 and −1?
- −4
- 0
- −2 (Correct answer)
- 1
Correct answer: −2
−2 lies between −3 and −1 on the number line.
Question 6: A store sells notebooks for $2.50 each. If Mia buys 6 notebooks, how much does she spend?
- $13.00
- $14.50
- $15.00 (Correct answer)
- $12.50
Correct answer: $15.00
6 × $2.50 = $15.00.
Question 7: Which of the following is a rational number?
- √2
- π
- √9 (Correct answer)
- √5
Correct answer: √9
√9 = 3, which is a whole number and therefore rational.
WVGSA Mathematics 2
A rectangle has a length of 12 cm and a width of 7 cm.
What is its area?