The document discusses how to calculate percentage discounts in two different methods. It explains that for a Rs. 80 shirt with a 20% discount, the two-step method involves calculating 20% of Rs. 80 as the discount amount and subtracting that from the original price. The one-step method calculates 80% of the original price directly as the amount to be paid after discount. The document provides an example calculation and tips for easier mental math calculations.

4. LEARNING OUTCOMES
After this interactive Session
Participants will be able to calculate
percentage discount
4

5. An Rs. 80 shirt you want is 20% off this week.
How much will it cost ?
5
Two Steps Method
calculating what you
save
One Step Method
calculating what you
pay
Rs. 80 = 100%
You save
20%
You pay
80%
HOW TO CALCULATE PERCETAGE DISCOUNT

6. An Rs. 80 shirt you want is 20% off this week.
How much will it cost ?
HOW TO CALCULATE PERCETAGE DISCOUNT 6
Two Steps Method
1) Original price X Discount %
2) Original price – Discount price
One Step Method
1) Original price X Payable %
80% 20%
Rs. 80 = 100%
80 x 0.8 = 64
= 64 Rs.
(net payable
after discount)
80 x 0.2 = 16
=> 80 – 16
= 64 Rs.
(net payable
after discount)

7. Tip !
It is easy to take 10%,
start with it when doing
mental math
7HOW TO CALCULATE PERCETAGE DISCOUNT

8. 8
What you will pay for the item ?
HOW TO CALCULATE PERCETAGE DISCOUNT

9. 9
Thank You !