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Chapter Analysis
Beginner11 pages • EnglishQuick Summary
This chapter introduces students to different techniques of multiplication and division, illustrating these concepts with real-life scenarios such as calculating salaries and expenses. It emphasizes methods for simplifying complex multiplication using partitioning strategies and for tackling division through repeated subtraction and verification by multiplication. The chapter also includes various exercises to help solidify these concepts through practice questions, enhancing a conceptual understanding.
Key Topics
- •Basic multiplication strategies
- •Multiplication by partitioning
- •Understanding division
- •Checking division with multiplication
- •Real-life applications of multiplication and division
- •Multiple step calculations
Learning Objectives
- ✓Apply different multiplication strategies to simplify calculations
- ✓Use division to solve problems and verify using multiplication
- ✓Understand and practice calculating real-life expenses
- ✓Recognize and correct common errors in division
- ✓Apply multiplication and division to problem-solving scenarios
- ✓Enhance arithmetic skills through varied practice exercises
Questions in Chapter
Use Bela’s method to multiply these numbers: 32 × 46, 67 × 18.
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What is the salary of the minister and the horse rider for one year?
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Sohan drinks 8 glasses of water every day. How many glasses will he drink in one month?
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A baby elephant drinks around 12 L of milk every day. How much milk will it drink in a year?
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Additional Practice Questions
If a cook is paid Rs 65 per day, how much will he earn in 30 days?
easyAnswer: Multiply 65 by 30: 65 × 30 = 1,950. The cook will earn Rs 1,950 in 30 days.
A shopkeeper has 204 eggs and puts them in trays that hold 12 eggs each. How many trays does he need?
mediumAnswer: Divide 204 by 12: 204 ÷ 12 = 17. He needs 17 trays.
A book costs Rs 47. If Sonu buys 23 books, how much does she pay in total?
mediumAnswer: Multiply 47 by 23: 47 × 23 = 1,081. Sonu pays Rs 1,081 in total.
How much petrol can Isha buy with Rs 1000 if 1 litre costs Rs 47?
hardAnswer: Divide 1000 by 47: 1000 ÷ 47 = approximately 21 litres. Isha can buy approximately 21 litres.
A farmer sells milk at Rs 11 per litre. If he sells 210 litres in a month, how much does he earn?
mediumAnswer: Multiply 11 by 210: 11 × 210 = 2,310. The farmer earns Rs 2,310.