Online Test — Multi-Digit Multiplication
10 Questions • 30 min • Chapter MCQ
30:00
Question 1 of 10
hard
A hall has 28 rows of 25 chairs. How many chairs altogether?
650
700
750
560
Explanation: 28 × 25 = 700.
Question 2 of 10
hard
125 × 8 = ?
1000
1024
1008
1080
Explanation: 125 × 8 = 1000.
Question 3 of 10
easy
Estimate 31 × 30.
600
900
1200
300
Explanation: ≈ 30 × 30 = 900.
Question 4 of 10
medium
123 × 4 = ?
482
492
412
522
Explanation: 4 × 123 = 492.
Question 5 of 10
easy
To estimate a product, you first…
round the numbers
add the numbers
subtract
ignore the numbers
Explanation: Round each number, then multiply.
Question 6 of 10
easy
45 × 20 = ?
90
900
9000
450
Explanation: 45 × 2 = 90, then add a zero → 900.
Question 7 of 10
medium
Estimate 52 × 48 (nearest 10).
2000
2500
3000
1500
Explanation: ≈ 50 × 50 = 2500.
Question 8 of 10
easy
There are 12 eggs in a tray. How many eggs in 6 trays?
60
72
84
66
Explanation: 12 × 6 = 72.
Question 9 of 10
easy
A book has 120 pages. How many pages are in 3 such books?
240
360
300
330
Explanation: 120 × 3 = 360.
Question 10 of 10
easy
Estimate 48 × 21 by rounding to the nearest 10.
800
1000
1200
900
Explanation: ≈ 50 × 20 = 1000 (exact is 1008).