The expression x n is called a power where, n is the exponent and x is the base .
Exponentiation is a shorthand notation for repeated multiplication.
We express our numbers using place value where each position to the left is weighted 10 times the position on its right. This system of writing numbers is the Hindu-Arabic Number System or Arabic Numerals. Smaller values go to the right unless they represent subtraction. One order of magnitude means one power of ten. A Ke i 0 term is order of bagnitude, or binary order of magnitude, which means one power of two.