BKSB Numeracy Skills 3 — Questions and Answers
Question 1: What is the area of a rectangle with a length of 8.5 cm and a width of 4 cm?
- 25 cm²
- 32 cm²
- 34 cm² (Correct answer)
- 40 cm²
Correct answer: 34 cm²
Area = length × width = 8.5 × 4 = 34 cm².
Question 2: A bank account earns 3% simple interest per year. If $500 is deposited, how much interest is earned after 2 years?
- $15
- $30 (Correct answer)
- $45
- $60
Correct answer: $30
Simple interest = Principal × Rate × Time = 500 × 0.03 × 2 = $30.
Question 3: What is the median of the following set of numbers: 7, 3, 9, 1, 5?
- 3
- 5 (Correct answer)
- 7
- 9
Correct answer: 5
Arranged in order: 1, 3, 5, 7, 9 — the middle value is 5.
Question 4: How many milliliters are in 2.5 liters?
- 250 mL
- 500 mL
- 2,500 mL (Correct answer)
- 25,000 mL
Correct answer: 2,500 mL
1 liter = 1,000 mL, so 2.5 × 1,000 = 2,500 mL.
Question 5: A jacket originally priced at $80 is on sale for $60. What is the percentage discount?
- 20%
- 25% (Correct answer)
- 30%
- 33%
Correct answer: 25%
Discount = (80 − 60) ÷ 80 × 100 = 20 ÷ 80 × 100 = 25%.
Question 6: Which expression is equal to 3² + 4²?
- 5² (Correct answer)
- 6²
- 7²
- 12²
Correct answer: 5²
3² + 4² = 9 + 16 = 25 = 5², which is related to the Pythagorean triple 3-4-5.
Question 7: A number is increased by 30% and the result is 91. What was the original number?
- 63
- 70 (Correct answer)
- 73
- 78
Correct answer: 70
Original = 91 ÷ 1.30 = 70.
BKSB Numeracy Skills 3
What is the area of a rectangle with a length of 8.5 cm and a width of 4 cm?