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Mathematics 20 Online
OpenStudy (anonymous):

How many significant digits does 100 have?

Miracrown (miracrown):

How many do you think?

OpenStudy (anonymous):

1?

Miracrown (miracrown):

why 1?

OpenStudy (anonymous):

I don't have an idea. Thats why i'm asking sherlock.

Miracrown (miracrown):

There are 3 significant digits in 100. because there is a decimal after the second zero, indicating that the units digit matters. If there is no decimal place, then the zeros are considered place holders and thus would be 1 sig fig only. But since there is a decimal, the former is true.

OpenStudy (anonymous):

Great. Thanks.

Miracrown (miracrown):

yw

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