# How do you write 0.0000485 in scientific notation?

Apr 24, 2018

$4.85 \cdot {10}^{-} 5$

#### Explanation:

you take that number and count how far away the first digit is from $0$. The $8$ is five digits away from the zero after the decimal.

The five will be the exponent, but since the non-zero digits are to the right of the zeroes, it'll be $- 5$. We're basically looping the decimal 5 times to the right, which means the exponent will be negative.

$\implies 4.85 \cdot {10}^{-} 5$

Apr 25, 2018

$4.85 \cdot {10}^{-} 5$

#### Explanation:

When we write numbers in scientific notation, we want the decimal after the first non-zero digit.

In our case, we want the decimal between the $4$ and the $8$. This means we have to loop the decimal five times to the right.

The $5$ will be our exponent, but since we looped it right, it'll be negative. Thus, we have:

$4.85 \cdot {10}^{-} 5$

Hope this helps!