IMO Arithmetic and Operations 1 — Questions and Answers
Question 1: What is 256 ÷ 16?
- 14
- 16 (Correct answer)
- 18
- 20
Correct answer: 16
256 ÷ 16 = 16.
Question 2: Which of the following is the correct order of operations for 3 + 4 × 2?
- 14
- 11 (Correct answer)
- 24
- 10
Correct answer: 11
By BODMAS/PEMDAS, multiplication comes before addition: 4 × 2 = 8, then 3 + 8 = 11.
Question 3: What is 15% of 200?
- 20
- 25
- 30 (Correct answer)
- 35
Correct answer: 30
15% of 200 = (15/100) × 200 = 30.
Question 4: A shopkeeper bought goods for $450 and sold them for $540. What is the profit percentage?
- 15%
- 18%
- 20% (Correct answer)
- 25%
Correct answer: 20%
Profit = $90; Profit % = (90/450) × 100 = 20%.
Question 5: What is the value of (48 + 32) ÷ (5 × 4)?
- 2
- 4 (Correct answer)
- 6
- 8
Correct answer: 4
(48 + 32) ÷ (5 × 4) = 80 ÷ 20 = 4.
Question 6: If a car travels 240 km in 4 hours, what is its average speed?
- 50 km/h
- 60 km/h (Correct answer)
- 70 km/h
- 80 km/h
Correct answer: 60 km/h
Average speed = Distance ÷ Time = 240 ÷ 4 = 60 km/h.
IMO Arithmetic and Operations 1
What is 256 ÷ 16?