# how many significant figures are in 75000.0? and why? ?

Relevance
• 6

Since there is a decimal, there is no question that all digits are significant.

• This is quite simple. Since 75000.0 has a decimal, all digits after the decimal count as sig figs, and so do all digits that are before the decimal point. Therefore, 75000.0 would have 6. If your number was 75000, there would be different since there is no decimal point. If there's no decimal point, there would only be 2, becuase the 3 zeros at the end wouldn't count.

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• Anonymous
10 months ago

There are six significant figures. It's because there's a decimal. Significant figures are used to account for errors or estimates in reading measurements. When you have a decimal it shows that the reading was done at the tenths place (or hundredths place or whatever). If it was just 75000 without the decimal, that could mean that the the reading was taken in the thousands. Like looking at a graph that is only marked at every thousand or ten thousand units, so the values for the hundreds or thousands place are just estimated by eye-balling it.

Just remember as a rule that if there is a decimal, you count the zeros.

True @Lon... the decimal rule only applies to trailing zeros, not if the number begins with zeros