IMO Practice Test — Multiplication: 2-digit × 1-digit
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
medium
25 × 4 = ?
90
100
110
84
Explanation: 25 × 4 = 100.
Question 2 of 6
medium
Find the missing factor: __ × 6 = 48
6
7
8
9
Explanation: 8 × 6 = 48.
Question 3 of 6
hard
99 × 2 = ?
188
198
199
200
Explanation: 99 × 2 = 198 (think 100 × 2 − 2).
Question 4 of 6
hard
Which is greater: 23 × 3 or 30 × 2?
23 × 3
30 × 2
Equal
Cannot tell
Explanation: 69 > 60, so 23 × 3 is greater.
Question 5 of 6
medium
A dozen is 12. How many eggs in 4 dozen?
36
44
48
52
Explanation: 12 × 4 = 48.
Question 6 of 6
hard
18 × 5 = ?
80
85
90
95
Explanation: 18 × 5 = 90.