Page 44 - Start Up Mathematics_4

Subtraction of Numbers (without borrowing or regrouping)

We follow the same steps to subtract large numbers as we do for smaller numbers.

Example 1: Find the difference between 87,632 and 42,102.

Solution: Step 1: Subtract the ones. 2 – 2 = 0 Step 2: Subtract the tens. 3 – 0 = 3

TTh Th H T O TTh Th H T O

8 7 6 3 2 8 7 6 3 2

– 4 2 1 0 2 – 4 2 1 0 2

0 3 0

Step 3: Subtract the hundreds. Step 4: Subtract the thousands.
6 – 1 = 5 7 – 2 = 5

TTh Th H T O TTh Th H T O

8 7 6 3 2 8 7 6 3 2

– 4 2 1 0 2 – 4 2 1 0 2

5 3 0 5 5 3 0

Step 5: Subtract the ten thousands. 8 – 4 = 4

TTh Th H T O
Mental Maths
8 7 6 3 2

– 4 2 1 0 2 50,250 – 40,200 =

4 5 5 3 0

So, 87,632 – 42,102 = 45,530.

Example 2: Subtract 2,30,452 from 5,46,793.

Solution: L TTh Th H T O

5 4 6 7 9 3
– 2 3 0 4 5 2

3 1 6 3 4 1

So, 5,46,793 – 2,30,452 = 3,16,341.

Subtraction without borrowing can also be done by writing numbers in the expanded form
and then subtracting.

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