Online Test — Decimal Operations
10 Questions • 30 min • Chapter MCQ
30:00
Question 1 of 10
medium
3.6 + 1.4 = ?
4.0
5.0
5.10
4.10
Explanation: 3.6 + 1.4 = 5.0.
Question 2 of 10
hard
10 − 3.45 = ?
6.55
7.55
6.45
7.45
Explanation: 10.00 − 3.45 = 6.55.
Question 3 of 10
medium
0.6 × 3 = ?
1.8
0.18
18
0.9
Explanation: 6 × 3 = 18, one decimal place → 1.8.
Question 4 of 10
easy
0.5 × 100 = ?
5
50
500
0.05
Explanation: × 100 moves the point two places right → 50.
Question 5 of 10
easy
0.3 + 0.4 = ?
0.7
0.07
7.0
0.34
Explanation: Add the tenths: 3 + 4 = 7 tenths = 0.7.
Question 6 of 10
easy
0.3 × 3 = ?
0.9
0.09
9.0
0.33
Explanation: 3 × 3 = 9, one decimal place → 0.9.
Question 7 of 10
medium
2.5 × 10 = ?
2.5
25
250
0.25
Explanation: One place right → 25.
Question 8 of 10
easy
0.4 × 2 = ?
0.8
0.08
8.0
0.42
Explanation: 4 × 2 = 8, one decimal place → 0.8.
Question 9 of 10
medium
0.25 × 4 = ?
0.1
1.0
1.25
0.29
Explanation: Four quarters = 1.0.
Question 10 of 10
easy
0.5 × 10 = ?
0.05
5
50
0.5
Explanation: × 10 moves the point one place right → 5.