Powers and Exponents
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Powers with negative exponents
Visualising powers and exponents
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Laws of Exponents
Powers with like bases
Power of a Power
Powers with unlike bases and same exponent
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Uses of Exponents
Expanding a rational number using powers
Inter conversion between standard and normal forms
Comparision of quantities using exponents
Frequently asked Questions on CBSE Class 7 Maths Notes Chapter 13: Exponents and Powers
What are ‘Exponents’?
An exponent is a number that is placed as a superscript over a number. In other words, it indicates that the base is raised to a certain power.
What is an ‘Exponent zero’?
The zero exponent indicates that there are no factors of a number.
What is a ‘Standard form’?
Standard form is a way of writing a number so it is easier to read. It is often used for very large or very small numbers.