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subtrACtion of 2-digit numbers

Example 1: Ravi bought 54 eggs and out of them 23 was rotten.
How many eggs were good?

Solution: To know the number of good eggs, we tens Ones

need to subtract 23 from 54. 5 4

Step 1. Write the smaller number below the bigger – 2 3
number according to the place value of digits.

Step 2. First subtract the ones.

tens Ones

5 4

– 2 3
1

Step 3. Subtract the tens next.

tens Ones

5 4

– 2 3

3 1

Thus, there were 31 good eggs left with Ravi.

Example 2: Subtract 43 from 65.
Solution:

Step 1. Subtract the ones first. Step 2. Subtract the tens next.

tens Ones tens Ones

6 5 6 5

– 4 3 – 4 3
2 2 2

Thus, 65 – 43 = 22

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