PRAXIS Elementary Education: Math Content Knowledge 3 — Questions and Answers
Question 1: What is 25% of 80?
- 20 (Correct answer)
- 25
- 15
- 40
Correct answer: 20
25% of 80 = 0.25 × 80 = 20.
Question 2: Which property is shown by 5 × (3 + 2) = (5 × 3) + (5 × 2)?
- Distributive (Correct answer)
- Associative
- Commutative
- Identity
Correct answer: Distributive
Multiplication distributed over addition is the distributive property.
Question 3: What is the area of a triangle with base 10 cm and height 6 cm?
- 30 cm² (Correct answer)
- 60 cm²
- 16 cm²
- 15 cm²
Correct answer: 30 cm²
Area = ½ × base × height = ½ × 10 × 6 = 30 cm².
Question 4: What is the next term in the sequence 2, 6, 18, 54, ...?
- 162 (Correct answer)
- 108
- 72
- 216
Correct answer: 162
Each term is multiplied by 3, so 54 × 3 = 162.
Question 5: How many edges does a cube have?
- 12 (Correct answer)
- 6
- 8
- 24
Correct answer: 12
A cube has 12 edges, 6 faces, and 8 vertices.
Question 6: If x + 7 = 15, what is the value of x?
- 8 (Correct answer)
- 22
- 7
- 9
Correct answer: 8
Subtracting 7 from both sides gives x = 8.
Question 7: What is 0.4 written as a percent?
- 40% (Correct answer)
- 4%
- 0.4%
- 400%
Correct answer: 40%
Multiply 0.4 by 100 to get 40%.
