IMO Practice Test — Decimal Operations
6 Questions • 25 min • Olympiad level
25:00
Question 1 of 6
hard
1.5 × 1.5 = ?
2.25
2.5
3.0
2.0
Explanation: 1.5 × 1.5 = 2.25.
Question 2 of 6
hard
0.06 × 100 = ?
0.6
6
60
600
Explanation: Two places right → 6.
Question 3 of 6
hard
₹100 − ₹37.50 = ?
₹62.50
₹63.50
₹72.50
₹52.50
Explanation: 100.00 − 37.50 = 62.50.
Question 4 of 6
medium
0.5 × 0.5 = ?
0.25
0.5
1.0
0.1
Explanation: Half of a half is a quarter = 0.25.
Question 5 of 6
hard
1.5 + 2.75 + 0.25 = ?
4.5
4.0
5.0
4.25
Explanation: 1.5 + 2.75 + 0.25 = 4.5.
Question 6 of 6
medium
7.2 ÷ 10 = ?
0.72
72
0.072
7.20
Explanation: One place left → 0.72.