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Intro activity - 15 min
Begin with a question: "What does 50% off mean during a sale?"
Explain the concept of percent as “per hundred” using real-life examples (e.g., discounts, grades, statistics).
Symbol: %
Example: 50% means 50 out of 100.
Why Use Percentages?
Percentages help us compare things easily.
They're used in real life like:
Discounts in shopping (20% off)
Test scores (You got 80%)
Battery level (Phone at 30%)
Interest on money (Bank gives 5%)
Game Name: “Percentage Pop Quiz!” 20 min
Objective: Warm up students with quick, fun percentage questions to activate prior knowledge.
Setup:
Divide the class into two teams.
Use flashcards or a whiteboard.
Each team takes turns answering questions.
One point for each correct answer.
Example Questions:
1. What is 50% of 100? (Answer: 50)
2. What percentage is half of something? (Answer: 50%)
3. Convert 0.25 to a percentage. (Answer: 25%)
4. You got 8 out of 10 on a quiz. What’s your percentage? (Answer: 80%)
5. What is 25% of 80? (Answer: 20)
6. A pizza is cut into 4 equal slices. If you eat 1 slice, what percentage did you eat? (Answer: 25%)
7. Which is more: 40% or 3/10? (Answer: 40%)
8. True or False: 100% means the whole thing. (Answer: True)
This is an activity to see what students know.
This should be done together after class.
Percentage Problems with Answers 45 mint
1. Finding a percentage of a number:
2. What is 20% of 150?
3.What is 25% of 200?
5.Ravi scored 72 marks out of 80 in a test. What percentage did he score?
A:
(72/80) × 100 = 90%
6.A shopkeeper gave a 20% discount on a ₹500 bag. What is the discount amount?
A:
20% of ₹500 = (20/100) × 500 = ₹100
7. A water tank is 75% full. If its total capacity is 200 liters, how much water is in the tank?
A:
75% of 200 = (75/100) × 200 = 150 liters
8. A fruit basket has 80 apples. 25% of them are rotten. How many apples are rotten?
A:
25% of 80 = (25/100) × 80 = 20 apples
9. A jacket that costs ₹2,000 is on sale for 30% off. What is the sale price?
A:
30% of ₹2,000 = ₹600
Sale price = ₹2,000 - ₹600 = ₹1,400
10. There are 60 students in a class. 40% are boys. How many boys are there?
A:
40% of 60 = (40/100) × 60 = 24 boys
11. A bottle contains 2 L of juice. 25% of it is orange juice. How much orange juice is there?
Solution:
25% of 2 L = (25 ÷ 100) × 2 = 0.5 L
. Fraction to Percentage Conversion
Method: Multiply the fraction by 100 and add the percent symbol (%).
Decimal to Percentage Conversion
Method: Multiply the decimal by 100 or move the decimal point two places to the right.
Follow-Up Task: Real-Life Percentage Practice (With Answers) 30 mint
1. A T-shirt is priced at ₹800. There is a 25% discount.
(a) Discount amount = (25 ÷ 100) × 800 = ₹200
(b) Final price = ₹800 − ₹200 = ₹600
2. A water bottle has 1.5 L of water. 40% has been used.
(a) Used water = (40 ÷ 100) × 1.5 = 0.6 L
(b) Left = 1.5 − 0.6 = 0.9 L
3. A fruit seller has 200 apples. 35% are spoiled.
(a) Spoiled = (35 ÷ 100) × 200 = 70 apples
(b) Good = 200 − 70 = 130 apples
4. A student saves ₹500 monthly. She spends 20% on books.
Spending = (20 ÷ 100) × 500 = ₹100
5. Rice price increased by 10%. Old price = ₹50 per kg.
Increase = (10 ÷ 100) × 50 = ₹5
New price = ₹50 + ₹5 = ₹55 per kg
Have the children repeat the quiz game given above. 15 mint
Expected Learning Outcomes:
By the end of the lesson, students will be able to:
. Define what a percentage is and explain its meaning in real-life contexts.
. Apply percentage concepts to solve real-world problems (e.g., discounts, tax, tips).
. Demonstrate understanding through class participation, guided practice, and independent work.
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