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Chapter Analysis
Beginner22 pages • EnglishQuick Summary
The chapter 'LARGE NUMBERS AROUND US' introduces students to the concept of large numbers, teaching them how to read and write these numbers using the Indian and American naming systems. It explains concepts such as lakhs, crores, millions, and billions, and discusses when to round numbers for simplicity. The chapter also includes exercises that involve using large numbers in various real-world scenarios, such as understanding population figures and distances.
Key Topics
- •Reading and writing large numbers
- •Indian and International place value systems
- •Rounding numbers
- •Large number operations
- •Estimating population sizes
- •Historical examples of large numbers
- •Exercises with creative calculations
- •Real-world relevance of large numbers
Learning Objectives
- ✓Understand how to read and write large numbers using different numeral systems.
- ✓Learn to round numbers and understand when approximations are appropriate.
- ✓Develop the ability to compare large numbers and perform calculations.
- ✓Apply knowledge of large numbers to real-world contexts and problems.
- ✓Enhance reasoning skills by solving creative and thought-provoking exercises.
- ✓Recognize the significance of large numbers in everyday life and history.
Questions in Chapter
How many coins should be stacked to match the height of the Statue of Unity, assuming each coin is 1 mm thick?
Page 20
Find out the approximate distance a bar-tailed godwit covers every day, knowing it travelled 13,560 km in 11 days.
Answer: Approximately 1,232.73 km per day.
Page 20
Write each of the numbers given below in words: (a) 3,00,600 (b) 5,04,085 (c) 27,30,000 (d) 70,53,138
Page 4
Additional Practice Questions
Using all digits from 0 to 9 exactly once, create the largest multiple of 5 possible.
mediumAnswer: 9876543210 is the largest multiple of 5.
Estimate how many years it would take for a person to watch 1,000 movies if they watched one movie every day.
easyAnswer: It would take approximately 2.74 years to watch 1,000 movies, assuming a steady pace of one movie per day.
If you multiply any number by 10, 100, or 1,000 using multiplication shortcuts, what pattern do you observe?
easyAnswer: The number of zeros in the product matches the number of zeros in the multiplier. For example, multiplying by 100 adds two zeros.
Calculate how many more times the height of Mount Everest is compared to a 150m tall building.
mediumAnswer: Mount Everest, approximately 8,850 meters tall, is 59 times taller than the 150-meter building.
Write expressions for two different ways to represent the number 8300 using the Creative Chitti calculator buttons.
hardAnswer: One way is (83 × 100), and another way is (8 × 1000) + (3 × 100).