# How do you write 629.55 in scientific notation?

##### 1 Answer
Nov 5, 2015

$6.2955 \cdot {10}^{2}$

#### Explanation:

Make sure you move your decimal to where your number will be between 1 and 10. Then if you moved your decimal to the left, your exponent for 10 will increase for each place you moved it; if you moved your decimal to the right, your exponent for 10 will decrease for each place you moved it.

$629.55$ must have it's decimal moved twice to the left in order for it to be in between 1 and 10.

$6.2955 \cdot {10}^{2}$ will be your answer. And if you want to round, you could just round it to $6.3 \cdot {10}^{2}$.