How do you use an exponent to represent a number such as 16
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An exponent is 1; 16 = 16^1
An exponent indicates how many times a number is multiplied by itself, so any number can be written with the exponent 1, just as 99 = 991. Since an exponent of 1 does not change the value of a number, it is not usually shown. A number with an exponent 2 is squared and with a 3 is cubed, for example 42 = 4 x 4 = 16 and 33 = 3 x 3 x 3 = 27.
When you have a number raised to a negative exponent, you move to the left rather than the right in decimal places. E.g. 103 = 1000 10-3 = 0.001 More specifically, when you have a negative exponent, you are taking the reciprocal of what the positive exponent would give. 24 = 16, but 2-4=(1/16) ■
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