What is the significant figure 3.0800?

To figure out how many significant figures there are in a number you must first know the rules. All numbers 1-9 are counted towards the number of significant figures. The only number you need to worry about is 0.

-If there are 0's between digits (like 105), they are counted towards sig figs.

-If, to the right of a decimal point, the number ends in a 0, or multiple 0's (4.660), they all count towards sig figs.

-If, to the left of a decimal point, the number ends in 0 (4500), the 0 (or this case zeros) do not count towards sig figs.

-If there is a lone 0 to the left of a decimal point (0.112), the 0 does not count towards sig figs.

With the number 3.0800, you know that the 3 and the 8 both count towards significant figures. The 0 in between them counts as well. Then the two 0's at the end count towards sig figs. In all the number 3.0800 has 5 significant figures.