Money maths · lesson 17 of 30 · free

Discounts and sales — Money maths for kids

A sale says 25% off. That means you save ₹25 for every ₹100 of the price. Discount = price × percent ÷ 100, and the sale price = price − discount. Quick tricks: 10% off is one-tenth, 50% off is half, 25% off is a quarter.

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The method

Percent off — “find the discount as a part of 100, then take it away from the price”

  1. Discount = price × % ÷ 100 (10% = ÷ 10, 25% = ÷ 4, 50% = ÷ 2).
  2. Sale price = price − discount.
  3. Price before the sale = sale price × 100 ÷ (100 − %).

Use it for: Festival sales, comparing offers, and percentage questions in Class 5.

🧮 Check your own sums with the free Discount calculator — it shows the working.

Worked example: A school bag costs ₹640. The shop gives 25% off. What is the sale price (in ₹)? → 480

  1. Discount: 25% of 640 = 640 ÷ 4 = ₹160.
  2. Sale price: 640 − 160 = 480.

Check: 480 is 75% of 640: 640 × 75 ÷ 100 = 480 ✓

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🏁 Lesson 17 test

20 sums. Check each answer, then go to the next one. Get 16 or more right to pass.

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🖨️ Discount Worksheet

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