# How do you round 0.00222755 to four significant figures and express the result in scientific notation?

##### 1 Answer

Mar 1, 2016

Let's do this one at a time

#### Explanation:

**Significant figures**

Start counting from the first non-zero. In this case the **up** (0-4=down, 5-9=up).

**Scientific notation**

Is of the form

You could also have done it this way: