How can you tell if something is not in scientific notation?

Answer 1

Scientific notation is a way of representing numbers, usually very large or very small, in the form

a*10b where 1 ≤ |a| < 10 is a decimal number and b is an integer (negative or positive).

a is called the mantissa and b is called the exponent.

So if |a| > 1

or |a| ≥ 10

or the base for the exponent is not 10 (however, it may be written as E for example a*Eb)

or b is not an integer

then the number is not in scientific notation.