Question #9435c

1 Answer
Stefan V.
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 -># 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.

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