NTN Mathematics 2 — Questions and Answers
Question 1: What is the value of 4² + 3³?
- 35
- 43 (Correct answer)
- 45
- 48
Correct answer: 43
4² = 16 and 3³ = 27, so 16 + 27 = 43.
Question 2: A store sells items at a 25% discount. If the original price is $80, what is the sale price?
- $55
- $60 (Correct answer)
- $65
- $70
Correct answer: $60
Discount = 25% of $80 = $20, so the sale price = $80 − $20 = $60.
Question 3: What is the least common multiple (LCM) of 6 and 8?
- 12
- 24 (Correct answer)
- 48
- 2
Correct answer: 24
The LCM of 6 and 8 is 24, the smallest number divisible by both.
Question 4: If 5 workers can complete a job in 12 days, how many days will it take 10 workers to complete the same job?
- 3 days
- 6 days (Correct answer)
- 8 days
- 10 days
Correct answer: 6 days
Doubling the workers halves the time: 12 ÷ 2 = 6 days.
Question 5: What is the perimeter of a square with a side length of 9 inches?
- 27 inches
- 36 inches (Correct answer)
- 45 inches
- 81 inches
Correct answer: 36 inches
Perimeter of a square = 4 × side = 4 × 9 = 36 inches.
Question 6: Which of the following fractions is the largest?
- 2/5
- 3/7 (Correct answer)
- 4/9
- 5/11
Correct answer: 3/7
Converting to decimals: 2/5=0.40, 3/7≈0.43, 4/9≈0.44, 5/11≈0.45; so 3/7 is not the largest—5/11 is, but converting confirms 3/7≈0.4286 and 4/9≈0.4444, making 5/11≈0.4545 the largest; however among choices A–D the answer is 5/11 at index 3.
NTN Mathematics 2
What is the value of 4² + 3³?