Worksheet on Computation Operations for Class 3

1. What symbol in the box will cause the given number sentence to be true?

a) +
b) −
c) ×
d) ÷

Answer: d) ÷

Explanation: 48 ÷ 6 = 8.

2. Find the value of A + B + C.

a) 14
b) 10
c) 8
d) 2

Answer: d) 12

Explanation:

Here, A = 3, B = 5 and C = 4
So, 3 + 5 + 4 = 12.

3. How are the following apples arranged in groups in such a way that each group can contain 3 apples?

a) 6
b) 7
c) 8
d) 9

Answer: a) 6

Explanation: Total apples = 18
Number of apples in each group = 3
Number of groups = 18 ÷ 3 = 6

4. Fill up the blank:

345 × 12 = _________

a) 3949
b) 4140
c) 4240
d) 4398

Answer: b) 4140

Explanation: Multiplication of a 3-digit number by a 2-digit number is performed.

345 × 12 = 4140

5. The difference between the two numbers is 500. If one of the numbers is 600, what is the other number?

a) 900
b) 1000
c) 1100
d) 1200

Answer: c) 1100

Explanation: The difference between the two numbers is 500.

We have to check each option.

In option (a), the difference between the two numbers = 900 − 600 = 300.
In option (b), the difference between the two numbers = 1000 − 600 = 400.
In option (c), the difference between the two numbers = 1100 − 600 = 500. Thus, this shows the correct difference.
In option (d), the difference between the two numbers = 1200 − 600 = 600.