Page 146 - Start Up Mathematics_3

Example 3: Add ` 4.75, ` 20.35 and ` 56.05.

Solution: ` p 1 1 Know More
1
4 1 7 5 ` 4 . 7 5 In India, Rupee one notes
1
1 ` 2 0 . 3 5 have signature of the
2 0 3 5 + ` 5 6 . 0 5 Secretary, Ministry of
+ 5 6 0 5 ` 8 1 . 1 5 Finance, Government of

8 1 1 5 India.

Answer: ` 81.15

Subtraction of Money

There are two ways of subtracting money as shown in the given examples.

Example 4: Subtract ` 23.45 from ` 57.68. Remember
Solution: ` p

5 7 6 8 ` 5 7 . 6 8 Always write the points
– ` 2 3 . 4 5 of numbers to be added
– 2 3 4 5 or subtracted below each
` 3 4 . 2 3 other.
3 4 2 3

Answer: ` 34.23
Example 5: Subtract ` 249.76 from ` 392.05.

Solution: ` p

11 9 11 9
8 1 10 15 8 1 10 15
3 9 2 0 5 ` 3 9 2 . 0 5
– 2 4 9 7 6 – ` 2 4 9 . 7 6
` 1 4 2 . 2 9
1 4 2 2 9

Answer: ` 142.29

Mixed Problems

Example 6: From the sum of ` 52.25 and ` 38.47, subtract ` 46.38.
Solution: Add (Sum) Subtract
` p ` p
1 1 8 10 6 12
5 2 2 5 9 0 7 2
+ 3 8 4 7 – 4 6 3 8

9 0 7 2 4 4 3 4

Answer: ` 44.34

138