Adding Money
Always
add rupees with rupees and paise with paise.
Example
1: Add Rs 157.80 and Rs 143.45.
Solution:
Rs

P

157

80

+ 143

45

301

25

Here, 80 p + 45 p = 125 p
125 p can be written as 100 p + 25 p.
Write 25 p in the paise column and carry over 100 p or Rs 1 to the
rupees column.
Now, Rs 157 + Rs 143 + Rs 1 = Rs 301
Thus, the
sum is Rs 301.25.
Example 2: Shivam bought a trolley bag for Rs 3187.50
and a school bag for Rs 645.00. Find the total amount spent.
Solution:
Rs

P

3187

50

+ 645

00

3832

50

Cost of the trolley bag
Cost of the school bag
Total cost
Thus, he spent
a total of Rs 3832.50 on buying the bags.
Subtracting Money
Subtract rupees from
rupees and paise from paise. If it is not possible to subtract in the paise
column, borrow Rs 1 or 100 p from the rupees column and then
subtract.
Example 1: Subtract Rs 352.75
from Rs 475.35.
Solution:
Rs

P

475

35

– 352

75

122

60

75 p cannot
be subtracted from 35 p.
So, borrow Rs 1 or 100
p from the rupees column.
Regroup Rs 475 to Rs 474 and 35 p to 135 p.
Thus, the
difference is Rs 122.60.
Example 2: Subtract Rs
445.44 from Rs 975.36.
Solution:
Rs

P

975

36

– 445

44

529

92

Thus, the
difference is Rs 529.92.
Multiplying Money
Multiplication of money is the same as multiplication of any two
numbers. Do remember to carry over Rs 1 whenever 100 p is
crossed.
Multiplication with conversion to paise
Example 1: What
is Rs 357.25 × 4?
Solution:
Step 1: Convert to paise.
Rs 357.25 × 100 = 35725 p
Step 2: Multiply the paise by 4.
35725 p × 4 = 142900 p
Step 3: Convert back the paise to
rupees.
142900 p ÷ 100 = Rs 1429.00
Thus, Rs 357.25
× 4 = Rs 1429.00
Multiplication without conversion to paise
Example 2: Multiply Rs
358.56 by 8.
Solution:
Rs

P

358

56

×

8

2868

48

Dividing Money
The division of money is the same as the division of two numbers.
Division with conversion to paise
Example 1: What is Rs 348.24 ÷ 2?
Solution:
Step 1: Convert to
paise.
Rs 348.24 × 100 = 34824 p
Step
2: Divide as for normal division.
Step 3: Convert back the paise to rupees.
17412 p ÷
100 = Rs 174.12
Thus, Rs
348.24 ÷ 2 = Rs
174.12
Division without conversion to paise
Example 2: Divide
Rs 345.24 by 3.
Solution:
Thus, Rs 345.24 ÷ 3 = Rs 115.08
Making a Bill
A bill is a written or printed statement of the money that we pay
for goods or services.
The shopkeeper prepares a list of the
things bought, their prices and the total amount to be paid. This list is
called a bill.
Example 1: Manish
took his family out for dinner. He ordered the following food items.
·
4 plates vegetable fried rice at Rs 250 each
·
2 plates fruit salad at Rs 25 each
·
3 lemonades at Rs 70 each
·
2 ice creams at Rs 45.50 each
Prepare the
bill and calculate the total amount spent on dinner.
Solution: The bill is as follows:





Vegetable fried rice

250

4

1000


Fruit salad

25

2

50


Lemonades

70

3

210


Ice creams

45.50

2

91.00


Total

1351.00

Example 2: Mrs
Sinha bought following items from a grocery shop.
·
5 kg onion at Rs 25.50 per kg
·
2 kg sugar at Rs 40.50 per kg
·
4 kg potato at Rs 20.00 per kg
·
10 kg rice at Rs 42.50 per kg
Prepare the
bill and calculate the total amount spent on groceries.
Solution: The bill is as follows:





Onion

25.50

5 kg

127.50


Sugar

40.50

2 kg

81


Potato

20.00

4 kg

80


Rice

42.50

10 kg

425.00


Total

713.50

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