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\\October 8, 2025 12:09 PM Bharat Arora P-9 Reader _________________________ Date: ___________________74

example 4: The population of a town is 28,76,543. Out of these, 15,42,678 are adult males
and 12,50,799 are adult females. How many children are there in the town?
Solution: TL L tth th H T O

1 1 1
Number of adult males in the town = 1 5 4 2 6 7 8
Number of adult females in the town = + 1 2 5 0 7 9 9
Total population of adult males and females = 2 7 9 3 4 7 7
Now, find the number of children in the town.

TL L tth th H T O
7 17 4 13 13
Total population of the town = 2 8 7 6 5 4 3
Total population of adult males and females = – 2 7 9 3 4 7 7
Therefore, number of children in the town = 8 3 0 6 6

Practice time 2b

1. Subtract the following:
(a) 3 9 5 4 6 2 1 (b) 4 2 5 9 8 9 7 3 (c) 5 8 0 2 1 2 3

– 2 9 6 3 5 4 0 – 1 7 8 3 4 7 0 2 – 4 0 2 6 7 8 7

(d) 8 1 6 5 6 3 2 (e) 3 2 5 6 7 0 1 (f) 9 3 1 0 1 2 0 2
– 9 2 1 5 6 7 – 1 9 9 9 9 9 9 – 8 7 5 0 0 8 9 6

2. Arrange in columns and subtract. Also, check your answer.
( a) 6,43,648 – 1,73,643 (b) 78,82,436 – 52,90,364

(c) 80,36,436 – 42,93,673 (d) 7,55,73,648 – 2,22,96,483
( e) 3,75,73,648 – 1,02,96,483 (f) 1,00,00,000 – 33,33,333
3. Fill the missing digits in the blank boxes.

(a) 5 2 3 4 (b) 6 0 8 9 0 (c) 7 6 4 6
– 1 2 1 8 – 8 0 5 8 – 2 3 9 4 8

4 4 4 4 4 5 8 2 6 5 4

(d) 7 3 6 4 (e) 6 7 3 4 8 (f) 8 4 3 6 5

– 2 9 4 8 3 – 4 1 3 4 2 – 2 9 7
2 8 6 1 5 6 3 0 3 0 7 2

4. Use the properties of subtraction to fill in the blanks.
( a) 8,67,383 – 0 = ____________ (b) 64,361 – ____________ = 64,361

( c) 4,20,805 – 1 = ____________ (d) 9,96,494 – ____________ = 9,96,493
( e) 71,43,260 – 71,43,260 = __________ (f) 2,43,646 – ____________ = 0

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