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Class 7 Maths Chapter 1 NCERT Book - Large Numbers Around Us

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FAQs on Class 7 Maths Chapter 1 NCERT Book - Large Numbers Around Us

1. What are large numbers and why are they important in our daily life?
Ans. Large numbers are numerical values that are significantly greater than what we typically use in everyday situations. They are important because they help us understand and quantify large populations, distances, and financial figures, which are essential in fields like economics, science, and statistics. For example, understanding the population of a country can help in resource allocation and planning.
2. How do we read and write large numbers correctly?
Ans. Reading and writing large numbers correctly involves understanding place value. Each digit in a number has a specific place value, such as units, tens, hundreds, thousands, millions, and so on. For example, the number 1,234,567 can be read as "one million, two hundred thirty-four thousand, five hundred sixty-seven." It's important to use commas to separate groups of three digits for clarity.
3. What are some examples of large numbers used in everyday contexts?
Ans. Some examples of large numbers include the population of a city (e.g., New York City has over 8 million residents), the distance from the Earth to the Sun (approximately 93 million miles), or the national debt of a country (which can be in trillions). These numbers illustrate the scale of certain aspects of our world, making them relatable and easier to understand.
4. How can we compare large numbers effectively?
Ans. Comparing large numbers can be done by looking at their place values. Start from the leftmost digit and compare each corresponding digit until a difference is found. For example, when comparing 5,678,900 and 5,678,500, we see that both have the same first five digits, but the sixth digit (9 vs. 5) determines that 5,678,900 is larger.
5. Why is it important to understand large numbers in mathematics?
Ans. Understanding large numbers in mathematics is crucial because it enhances our ability to solve real-world problems that involve large data sets, such as statistics and financial analysis. It also helps develop critical thinking and analytical skills, as students learn to manipulate and interpret large values, which is essential in various academic and practical applications.
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