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# significant figures?

what is 5306 rounded to the 1st, 2nd and 3rd significant figures? what do you do to get the answer?? I'm really struggling and i need some help i have a test on significant figures tommorrow!

### 4 Answers

- EmilLv 51 decade agoFavorite Answer
Examples

Rounding to 2 significant figures:

* 12,300 becomes 12,000

* 0.00123 becomes 0.0012

* 0.1 becomes 0.10 (the trailing zero indicates that we are rounding to 2 significant figures).

* 0.02084 becomes 0.021

* 19,800 becomes 20,000

One issue with rounding to n significant figures is that the value of n is not always clear. This occurs when the last significant figure is a zero to the left of the decimal point. For example, in the final example above, when 19,800 is rounded to 20,000

Therefore 5306 =

1 sig fig = 5,000

2 " " = 5,300

3 " " = 5,310

More help on Wikipedia.

Good Luck!

- 1 decade ago
Significant figures just means how many digits you keep from the left, then make up rest with zeros. The significant digits stay the same if less than 5 or are increased by 1 otherwise. 5306 becomes 5000 in one significant figure, 5300 in two significant figures, 5310 in three significant figures.