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\ 17-Nov-2023 Bharat Arora Proof-6 Reader’s Sign _______________________ Date __________

Let us arrange the numbers in columns of ones, tens and hundreds. Then subtract

starting from the ones place.

Step 1. First, subtract the Step 2. Next, subtract Step 3. Then, subtract the

ones. the tens. hundreds.
5 – 2 = 3 ones 4 – 2 = 2 tens 8 – 6 = 2 hundreds

H t O H t O H t O

8 4 5 8 4 5 8 4 5
– 6 2 2 – 6 2 2 – 6 2 2

3 2 3 2 2 3

Thus, 845 – 622 = 223.

That is, `223 is left in Amrita’s mobile wallet

now. Knowledge Desk
A digital payment is a way of
Let us study some more examples. transferring money from
one payment account to
example 1: Subtract the following. another using a digital
device like a smart phone.
(a) 324 – 112

(b) 750 – 300

Solution: (a) H t O (b) H t O

3 2 4 7 5 0
– 1 1 2 – 3 0 0
2 1 2 4 5 0

Thus, 324 – 112 = 212 Thus, 750 – 300 = 450

example 2: Subtract 472 – 22 by writing in columns.

Solution: We write the smaller number below the greater number and subtract

starting from the ones place.

H t O Get it right!

4 7 2 Subtract 4 from 578.
– 2 2 H T O H T O
5 7 8
5 7 8
4 5 0 – 4 – 4
Thus, 472 – 22 = 450. 1 7 8 7 5 7 4 3

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