# How do you write #4392.7# in scientific notation?

##### 2 Answers

4.3927

#### Explanation:

In scientific notation there is to be only one number to the left of the decimal. The decimal must be moved three places to the left to put 4 as the only digit to the left of the decimal.

To maintain the value of the number it must be multiplied by a a power of ten. As the decimal has been moved three places to the left making the number smaller the power of ten must be larger by three powers of ten. ( the decimal was moved three places. )

The number of significant numbers ( numbers that have been measured) must be preserved to indicate the precision of the number. There are five numbers in # 4392.7 so all five of these numbers must be expressed in scientific notation. so the answer is

Rounded:

Unrounded:

#### Explanation:

The goal of scientific notation is to have a small number (the ones place, usually with a decimal) multiplied by

By multiplying by

Hope this helps!