# Positive and zero exponents

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The exponent is the number or value to which a variable or number is raised. The exponent usually written as am. Here ‘a’ is the base value and ‘m’ is the exponent. The exponent can be a positive, negative or equal to zero. The exponent tell the number or times the base number needs to be multiplied.
If m is a positive number: am = a x a x a x a…..a (m times).
If m is equal to zero: a0 = 1. (Any value to the power zero is equal to 1.)

Example 1: Evaluate the value of the expression: (0.3)4
Solution: Here the exponent expression given is (0.3)4.
The base number is 0.3 and the power to which the number is raised is 4.
The base number needs to ne multiplied 4 times.
This gives (0.3)4 = 0.3 x 0.3 x 0.3 x 0.3
Here there is a decimal number in 0.3 so multiplying four times has the final answer will consist of four decimal number.
Therefore, 0.3 x 0.3 x 0.3 x 0.3 = 0.0027