Ryan Y. answered 11/21/13
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In this case, you would apply the same rules as the other problem. The first (leftmost) significant figure is 3. Rounding, you get -350.
However, as the ones digit is a zero, you need to have a way of indicating that this is a number with three significant figures.
350
looks like a number rounded to two significant figures. You can get around this by writing it as
However, as the ones digit is a zero, you need to have a way of indicating that this is a number with three significant figures.
350
looks like a number rounded to two significant figures. You can get around this by writing it as
350.
Make sure you include the decimal point to highlight that the zero itself is a significant figure.