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Money — Rupees and Paise

Money & Data Handling: Money — Rupees and Paise

Money — Rupees and Paise

Money — Rupees and Paise

What you'll learn

  • Understand the relationship 1 rupee = 100 paise.
  • Add costs of two or more items to find a total bill.
  • Calculate change received after a purchase.

Key concepts

Level 1 — Rupees and paise

Verbal: Money is written as ₹ (rupees) and paise, e.g. ₹25.50 means 25 rupees and 50 paise. Since 1 rupee = 100 paise, ₹25.50 = 2,550 paise.

Level 2 — Converting rupees to paise

Symbolic: ₹8 = 8 × 100 = 800 paise. ₹8.75 = 800 + 75 = 875 paise.

Level 3 — Adding costs (total bill)

Example: A notebook costs ₹35 and a pencil box costs ₹60. Total = ₹35 + ₹60 = ₹95.

Level 4 — Finding change

Example: A toy costs ₹120. If you pay with a ₹200 note, change = ₹200 − ₹120 = ₹80.

NCERT anchor: Math-Magic 4, Ch 6 — The Junk Seller (buying, selling, and handling money).

Worked example

Priya buys a story book for ₹85 and a water bottle for ₹140. She pays with a ₹500 note. How much change does she get?

Step 1 — Find total cost: ₹85 + ₹140 = ₹225.
Step 2 — Find change: ₹500 − ₹225 = ₹275.
Answer: ₹275 change.

Common mistakes

MistakeWhy it happensFix
Using 1 rupee = 10 paiseConfusing with place valueAlways remember 1 rupee = 100 paise
Forgetting to add all items before finding changeSubtracting cost of only one itemAdd ALL item costs first, then subtract from the amount paid
Subtracting in the wrong orderRushing the calculationChange = amount paid − total cost (paid must be more)
Misplacing the decimal point in rupees–paiseNot aligning paise as two digitsAlways write paise as two digits, e.g. ₹5.05, not ₹5.5 for 5 paise

Quick check

  • ₹12 = ___ paise (1,200 paise)
  • A pen costs ₹18 and a ruler costs ₹12. Total cost? (₹30)
  • You pay ₹100 for an item costing ₹65. Change? (₹35)
  • ₹7.50 = ___ paise (750 paise)
  • Stretch: Three items cost ₹45, ₹60 and ₹95. You pay with a ₹500 note. What is the change? (₹300)

Revision tip: Practise "shop-shop" at home — add prices of two toys/snacks and work out change from a ₹100 or ₹500 note.

Open the Practice tab for graded questions on Money.

Key Takeaways (TL;DR)

  • What you'll learn
  • Key concepts
  • Worked example
  • Common mistakes

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