Class 7 Exam > Class 7 Videos > Mathematics (Ganita Prakash) Class 7 - New NCERT > Large Numbers Around Us
Large Numbers Around Us Video Lecture | Mathematics (Ganita Prakash) Class 7 - New NCERT
FAQs on Large Numbers Around Us Video Lecture - Mathematics (Ganita Prakash) Class 7 - New NCERT
| 1. What are large numbers and why are they important in our daily lives? |  |
Ans.Large numbers are values that have a significant magnitude, often exceeding the typical counting numbers we use daily. They are important in our daily lives because they help us understand and quantify things like population statistics, distances in astronomy, and financial data in economics. For instance, understanding large numbers enables us to grasp the scale of national budgets or the size of global populations.
| 2. How can we compare large numbers easily? | |
Ans.Comparing large numbers can be done by looking at their place values. The number with the higher digit in the leftmost place value is larger. Additionally, using scientific notation can simplify comparison by expressing large numbers in powers of ten, which makes it easier to see which is larger without counting all the digits.
| 3. What are some examples of large numbers used in real-world contexts? | |
Ans.Examples of large numbers in real-world contexts include the estimated number of stars in the Milky Way galaxy, which is about 100 billion (10^11), or the distance from the Earth to the nearest star, which is approximately 4.24 light-years, translating to about 25 trillion miles (2.5 x 10^13). These figures help us understand the vastness of space and our place in it.
| 4. How do we write large numbers in standard form or scientific notation? | |
Ans.Large numbers can be written in standard form or scientific notation by expressing them as a number between 1 and 10 multiplied by a power of ten. For example, the number 450,000 can be written as 4.5 x 10^5 in scientific notation. This method is useful for simplifying calculations and comparisons involving large values.
| 5. Why do we need to learn about large numbers in mathematics? | |
Ans.Learning about large numbers in mathematics is essential because it enhances our numerical literacy and helps us comprehend concepts that involve scale and magnitude. It also prepares us for real-world applications in fields like science, finance, and technology, where large data sets and measurements are common. Understanding large numbers equips us with skills to analyze and interpret information effectively.
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