How many significant figures in this negative number?

Question

I understand that $0.03$ would have $1$ significant figure.

Does $-0.03$ also have one significant figure or $3$?

Thanks.

Answer 1

$0.03$ and $-0.03$ have the same number of significant digits (or figures), namely one.

Answer 2

For negative numbers, to find the number of significant figures, you can find the number of significant figures of the absolute value.