## Scientific Notation

Scientific notation is a notation for writing numbers to make it easier to write large and small numbers. The basic expression for scientific notation uses powers of ten:

a x 10

^{b}where a is the significand (or mantissa) and b is the exponent resulting in 1 ≤ |a| < 10

For two numbers in scientific notation:

^{ }

^{}Addition/Subtraction:

First, if necessary, convert one number to a representation with the same exponential part as the other. This is usually done with the one with the smaller exponent. Second, add or subtract the mantissas.

^{}