Discount Shop

Class 7–8 Maths: comparing quantities (percentages)

Go shopping in a sale. Work out discounts and find out why 50% off plus 20% off is not 70% off.

Words to know

Percent (%)
Out of 100: 20% means 20 out of every 100.
Discount
The amount taken off the marked price.
Marked price
The price written on the tag before any discount.
Sale price
The price you pay after the discount.

Quick check

Answer 3 questions to check what you learned.

1. 20% off a ₹500 bag saves…
2. A ₹1000 phone cover is 30% off. You pay…
3. 50% off and then 50% off again leaves you paying…

Try at home

Look at a shop advert or a newspaper sale. Pick an item and work out the discount in rupees. Then check: is the 'sale price' right?

Next, try a full lab