# Question #9435c

Mar 15, 2017

Three.

#### Explanation:

Right from the start, you should be able to say that the number hs at least three significant figures because it has $3$ non-zero digits.

Non-zero digits are always significant, regardless if the precede a decimal point or follow it.

In this case, you have $4$, $8$, and $3$ as non-zero digits, so you can say that you start with

$0.483 \to$ three sig figs

Now, how about the $0$, would that be significant?

As you can see, the $0$, which acts as a "placeholder", precedes the decimal point in a number that is smaller than $1$. In such cases, the $0$ is not significant.

You can thus say that $0.483$ has $3$ significant figures.