MASS Math 3 — Questions and Answers
Question 1: What is the sum of the angles in a triangle?
- 90°
- 180° (Correct answer)
- 270°
- 360°
Correct answer: 180°
The interior angles of any triangle add up to 180°.
Question 2: Simplify: 4(x + 3) - 2x.
- 2x + 12 (Correct answer)
- 2x + 3
- 6x + 12
- 2x + 7
Correct answer: 2x + 12
Distribute to get 4x + 12 - 2x = 2x + 12.
Question 3: What is the greatest common factor of 24 and 36?
- 6
- 8
- 12 (Correct answer)
- 18
Correct answer: 12
12 is the largest number that divides both 24 and 36 evenly.
Question 4: A shirt costs $40 and is on sale for 25% off. What is the sale price?
- $10
- $25
- $30 (Correct answer)
- $35
Correct answer: $30
25% of $40 is $10, so $40 - $10 = $30.
Question 5: What is the perimeter of a square with side length 9 cm?
- 18 cm
- 27 cm
- 36 cm (Correct answer)
- 81 cm
Correct answer: 36 cm
Perimeter = 4 × side = 4 × 9 = 36 cm.
Question 6: Evaluate: 12 + 6 ÷ 2 × 3.
- 21 (Correct answer)
- 27
- 30
- 36
Correct answer: 21
Following order of operations: 6 ÷ 2 = 3, 3 × 3 = 9, then 12 + 9 = 21.
Question 7: What is the median of the set: 4, 8, 6, 10, 2?
- 4
- 6 (Correct answer)
- 8
- 10
Correct answer: 6
Ordered as 2, 4, 6, 8, 10, the middle value is 6.
MASS Math 3
What is the sum of the angles in a triangle?