CTET CTET Math 4 — Questions and Answers
Question 1: The sum of interior angles of a hexagon is:
- 540°
- 720° (Correct answer)
- 900°
- 1080°
Correct answer: 720°
Sum = (n − 2) × 180° = (6 − 2) × 180° = 720°.
Question 2: Which of the following fractions is between 3/5 and 4/5?
- 1/2
- 7/10 (Correct answer)
- 9/10
- 2/3
Correct answer: 7/10
3/5 = 0.6 and 4/5 = 0.8; 7/10 = 0.7 lies between them.
Question 3: A number when divided by 56 gives remainder 29. What remainder does the same number give when divided by 8?
- 3
- 5 (Correct answer)
- 7
- 1
Correct answer: 5
56 is divisible by 8; so remainder = 29 mod 8 = 29 − 24 = 5.
Question 4: The probability of getting a head when a fair coin is tossed twice is:
- 1/4
- 1/2
- 3/4 (Correct answer)
- 1
Correct answer: 3/4
P(at least one head) = 1 − P(no head) = 1 − 1/4 = 3/4.
Question 5: If a:b = 2:3 and b:c = 4:5, then a:b:c is:
- 8:12:15 (Correct answer)
- 2:3:5
- 4:6:10
- 6:9:12
Correct answer: 8:12:15
Make b common: a:b = 8:12 and b:c = 12:15; so a:b:c = 8:12:15.
Question 6: The volume of a cube whose surface area is 96 cm² is:
- 16 cm³
- 64 cm³ (Correct answer)
- 32 cm³
- 128 cm³
Correct answer: 64 cm³
6a² = 96 → a² = 16 → a = 4 cm; volume = 4³ = 64 cm³.
Question 7: Which pedagogical approach best helps primary students understand the concept of fractions?
- Memorizing fraction rules
- Using paper folding and equal-sharing activities (Correct answer)
- Drill and practice worksheets
- Introducing algebraic notation early
Correct answer: Using paper folding and equal-sharing activities
Concrete manipulatives like paper folding build conceptual understanding of fractions.
CTET CTET Math 4
The sum of interior angles of a hexagon is: