Addition
and Substraction on Money
To add and subtract simple
amounts of money in denominations of rupees and paise which are multiples of
ten using column addition and subtraction with regrouping
Addition
without conversion
Sankar purchased 1kg rice for ₹ 45.50 and 1kg of dhal for ₹ 78.60
Correct method
Cost of 1 kg of
rice = ₹ 45.50
Cost of 1 kg of
dhal = ₹ 78.60
Total cost ₹ 124.10
Addition
with conversion
A groundnut burfi seller uses
many ingredients to prepare it. So, he sells the burfi along with the
ingredients. Original price of burfi is Rs.20 and he includes ingredients cost
as 0.75 paise. Find the cost of burfi.
Correct method
Original cost of
burfi = ₹ 20.00
Cost of
ingredients = ₹ 00.75
Cost of burfi = ₹ 20.75
EXAMPLE
Irusan went to electronic shop
and bought 100 watts, 120 watts, 150 watts bulbs for amount ₹ 12.50, ₹ 14.70 and ₹ 18.50. What is the total amount he spent in all?
Cost of 100
watts bulb = ₹ 12.50
Cost of 120
watts bulb = ₹ 14.70
Cost of 150
watts bulb = ₹ 18.50
The total amount
he spent in all = ₹ 45.70
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