Day 17: Real-World Money | Preparatory Stage (Grades 3 to 5) Mathematics | Apex Institute of Maths and Sciences

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Day 17: Real-World Money

Preparatory Stage (Grades 3 to 5) Mathematics | Apex Institute of Maths and Sciences

🚀 Level 1: The Quest (The Money Concept)

Welcome, Young Shopper! Have you ever noticed prices like ₹45.50 on a chocolate wrapper? Money and Decimals are best friends! The number before the dot represents Rupees, and the number after the dot represents Paise.

Money Secret:
1 Rupee = 100 Paise
So, 1 Paisa = $ \frac{1}{100} $ of a Rupee = ₹0.01
Price Tag Rupees Paise
₹10.25 10 25
₹5.05 5 05
⚡ Level 2: Power-Ups (Shopping Methods)
The Decimal Rule: When adding money, always line up the “Dots” (decimal points). If there are no paise, write it as .00.
Example: Add ₹12.50 and ₹7.75
$ 12.50 $
$ + 07.75 $
———-
$ 20.25 $
⚔️ Level 3: Mini-Boss Battles (Real Life)
Scenario 1: The Stationery Shop
Aryan buys a pen for ₹15.50 and an eraser for ₹5.25. How much does he pay in total?
Solution: ₹15.50 + ₹5.25 = ₹20.75
Scenario 2: The Return Change
Sana gives a ₹100 note to buy a toy costing ₹82.50. How much change should she get back?
Solution: ₹100.00 – ₹82.50 = ₹17.50
🏡 Level 4: Home Quests (Tasks)
Task 1: Kitchen Audit
Find 3 packed food items in your kitchen (like biscuits or salt). Note down their MRP (Maximum Retail Price) and practice saying them as “Rupees and Paise”.
Task 2: Play Store
With your parents, pretend to sell 2 items (like a book and a toy). Give them “Decimal Prices” and calculate the total bill on a piece of paper!
🐲 Final Boss: Practice Test

1. How do you write 5 Rupees and 5 Paise as a decimal? EASY

Magic Solution: Since 100 paise make a rupee, 5 paise is 5/100 = 0.05. So it is ₹5.05.

2. Convert ₹12.75 into only Paise. EASY

Magic Solution: Multiply by 100 to convert to paise. $ 12.75 \times 100 = 1275 $ paise.

3. ₹1.00 – ₹0.50 = ? EASY

Magic Solution: 100 paise minus 50 paise leaves 50 paise (₹0.50).

4. Which is more? ₹10.01 or ₹10.10? EASY

Magic Solution: 10 paise (.10) is more than 1 paisa (.01).

5. Add ₹45.50 and ₹10.50. MODERATE

Magic Solution: 50 + 50 paise = 100 paise (1 Rupee). So, 45+10+1 = ₹56.00.

6. Rahul bought a ball for ₹22.25 and a bat for ₹75.50. Total bill? MODERATE

Magic Solution: Line up the decimals: $ 22.25 + 75.50 = 97.75 $.

7. If 1 chocolate costs ₹5.50, what is the cost of 2 chocolates? MODERATE

Magic Solution: ₹5.50 + ₹5.50 = ₹11.00.

8. Subtract: ₹50.00 – ₹12.25 MODERATE

Magic Solution: $ 50.00 – 12.25 = 37.75 $. Remember to borrow across zeros!

9. A pack of 4 juices costs ₹80.40. What is the cost of 1 juice? COMPLEX

Magic Solution: Divide both parts by 4. $ 80 \div 4 = 20 $ and $ 40 \div 4 = 10 $. So, ₹20.10.

10. You buy items for ₹15.50, ₹10.25, and ₹5.25. You pay with ₹50. Change? COMPLEX

Magic Solution: Total = 15.50 + 10.25 + 5.25 = ₹31.00. Change = 50.00 – 31.00 = ₹19.00.

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