# The distance between the sun and Neptune is approximately 2,800,000,000 miles, how do you write it in scientific notation?

Jun 3, 2018

#### Answer:

$2.8 \cdot {10}^{9}$

#### Explanation:

When we write numbers in scientific notation, we want one non-zero digit before the decimal. This means we'll have the decimal between the $2$ and the $8$.

We need to loop the decimal $9$ times to the left. This will become our power of $10$.

Since we looped left, the exponent will be positive. We have

$2.8 \cdot {10}^{9}$

Hope this helps!