Thread: another significant figure question.

so is 90.00 4 sig figs?? i thought when zero's locate the decimal they dont count??

or is that only when:

0.004 = 1 sig fig

but since there is a "9"
90.00 counts as 4 sig figS??

is my reasoning right or wrong?

Originally Posted by legendn3verdie

so is 90.00 4 sig figs?? i thought when zero's locate the decimal they dont count??

or is that only when:

0.004 = 1 sig fig

but since there is a "9"
90.00 counts as 4 sig figS??

is my reasoning right or wrong?

Trailing zeros after a decimal point are always significant. 90.00 has four sig figs.

Leading zeros are never significant. 0.004 has 1 sig fig.