Page 33 - Math Skill - 4

Addition and Subtraction 31

Let’s Attempt

Example 1: Subtract: 68416 + 6128 – 5128.
Solution: Step 1: Step 2:
1 1 6 14 3 14
6 8 4 1 6 7 4 5 4 4

+ 6 1 2 8 – 5 1 2 8

7 4 5 4 4 6 9 4 1 6

Thus, 68416 + 6128 – 5128 = 69416.
Example 2: Mr Bansal bought 51854 pieces of marble slabs and sold 38125 of these. On the

next day, he bought 75002 marble slabs more. How many marble slabs are now
there with him?
Solution: Number of marble slabs Mr Bansal bought = 51854

Number of marble slabs Mr Bansal sold = 38125
Now, Mr Bansal has = 51854 – 38125 4 11 4 14

= 13729 marbles slabs 5 1 8 5 4

Next day Mr Bansal bought – 3 8 1 2 5
= 75002 marble slabs
1 3 7 2 9

Thus, total number of marble slabs he has
1
= 13729 + 75002 = 88731 1 3 7 2 9

Therefore, Mr Bansal has 88731 marble slabs.
+ 7 5 0 0 2

8 8 7 3 1

Exercise 2.7

1. Simplify the following expressions.
(a) 1005 – 775 + 358 (b) 12758 – 8356 + 166

(c) 16155 + 7245 – 777 (d) 18983 + 7768 – 8798
2. Subtract 7581 from the sum of 6898 and 28361.

3. There were 23758 males and 21685 females in a town in the beginning of the year. 615
people died during the year. Find the population of the town at the end of the year.
4. A man deposited ` 84500 in his savings bank account in the month of January. He withdrew
` 43570 in the next month and, at the end of that month, he again deposited ` 24785. How

much amount is left in his account now?