CBSE Class 7th Maths

Exponents and Powers

Exponents
We can write large numbers in a short form using exponents.
For example: 125 = 5 x 5 x 5 = 53
Here, ‘5’ is called the base and ‘3’ the exponent. The number 53 is read as 5 raised to the power of 3.

Laws of Exponents

Decimal Number System
10,000 = 104
1000 = 103
100 = 102
10 = 101
1 = 100

Inter conversion between standard and normal forms

Comparision of quantities using exponents

NCERT Solutions

 

 

Algebraic Expressions (Prev Lesson)
(Next Lesson) Symmetry
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