Maths Powers part 2 (Exponents) CBSE Class 8 Mathematics VIII | Summary and Q&A

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February 15, 2017
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Maths Powers part 2 (Exponents) CBSE Class 8 Mathematics VIII

TL;DR

Exponents represent the power to which a number is raised and can be used to simplify the representation of large and small numbers.

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Key Insights

  • 🛩ī¸ Exponents simplify the representation of large and small numbers.
  • #ī¸âƒŖ Positive exponents are used for larger numbers, while negative exponents are used for fractions or very small numbers.
  • đŸĢ  Reading negative exponents involves saying "to the power minus" followed by the exponent.
  • 🏑 Exponents are a fundamental concept in mathematics and have practical applications in various fields.

Transcript

hello friends this video on powers part 2 is brought to you by example calm no more fear from exam so what are exponent so this are quantities that represents the power to which a given manner is to be rained so exponents tell us how many times can be use the number in multiplication let's take an example X play 2 to the power 4 so what is it phone... Read More

Questions & Answers

Q: What are exponents used for?

Exponents are used to indicate the number of times a number should be multiplied by itself in a multiplication calculation.

Q: How can exponents simplify the representation of large numbers?

Exponents allow us to represent large numbers by using a base number and an exponent, instead of writing out all the digits of the number.

Q: How are negative exponents used?

Negative exponents are used to represent fractions or very small numbers. They indicate that the base number should be divided by itself multiple times.

Q: How do you read a negative exponent?

A negative exponent is read as "10 to the power minus 5" or "10 raised to the power minus 5". It indicates that the base number should be divided by itself five times.

Summary & Key Takeaways

  • Exponents are used to indicate how many times a number should be multiplied by itself in a multiplication operation.

  • They can be used to represent both large and small numbers conveniently, making calculations easier.

  • Positive exponents are used for larger numbers, while negative exponents are used for smaller numbers.

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