IMO Practice Test — Decimals (Tenths and Hundredths)
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
hard
Which decimal lies between 0.3 and 0.5?
0.4
0.2
0.6
0.55
Explanation: 0.4 is between 0.3 and 0.5.
Question 2 of 6
hard
Add 0.35 + 0.4 + 0.25.
1.0
0.95
1.05
0.9
Explanation: 0.35 + 0.40 + 0.25 = 1.00.
Question 3 of 6
hard
A rope is 2.5 m. After cutting 0.75 m, how much is left?
1.75 m
1.25 m
2.25 m
1.5 m
Explanation: 2.50 − 0.75 = 1.75 m.
Question 4 of 6
medium
Which list is ordered from smallest to largest?
0.2, 0.25, 0.5
0.5, 0.25, 0.2
0.25, 0.2, 0.5
0.5, 0.2, 0.25
Explanation: 0.2 < 0.25 < 0.5.
Question 5 of 6
medium
Write 0.6 as a fraction in lowest terms.
3/5
6/10
1/6
2/3
Explanation: 0.6 = 6/10 = 3/5.
Question 6 of 6
hard
In the number 7.08, what is the value of the 8?
8 hundredths
8 tenths
8 ones
8 tens
Explanation: 8 is in the hundredths place → 0.08.