# How do you convert 689 into scientific notation?

Jul 13, 2015

The number in standard scientific notation is 6.89 × 10^2.

#### Explanation:

In scientific notation, numbers are written in the form a × 10^b, where $a$ is the "pre-exponential" part and ${10}^{b}$ is the "exponential part".

Your number in decimal form is $689$.

To get to "standard" scientific notation, we move the decimal point so there is only one non-zero digit in front of the decimal point.

So, $689$ becomes $6.89$.

We moved the decimal point two places, so the exponent is $2$.

We moved the decimal point to the left, so the exponent is positive.

The exponential part is therefore ${10}^{2}$.

689 = 6.89 × 10^2