Page 70 - ICSE Math 2

(d) 23 – 11 (e) 55 – 54 (f) 79 – 68

T O T O T O

– – –

Subtraction by Borrowing

Some mes the digit we need to subtract is bigger than the digit it has to be

subtracted from. In such cases we need to regroup or borrow from the digit on
the le .

Look at the given examples.

(a) Subtract 25 from 63.

T O
Step 1: Subtract the ones.
6 3
5 being bigger than 3 cannot be subtracted
– 2 5 from 3.

T O
5 13 Step 2: Take 1 ten from the tens column and add it
6 3
to 3 ones.
– 2 5 10 ones + 3 ones = 13 ones = 13

8 Subtract 5 from 13.

13 – 5 = 8
Change 6 tens to 5 tens in the tens column.

T O
5 13 Step 3: Subtract the remaining tens.
6 3
5 – 2 = 3
– 2 5
So, 63 – 25 = 38.
3 8

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