Posted by **Sally** on Thursday, September 20, 2012 at 10:34pm.

How many significant figures does 22.0, 0.22, 22. , 0.022?

Im just confused as to the decimal addition to numbers and what the sig figs will be for them.

If you don't mind can you please state some rules for sig figs that are helpful and some confusing rules as well and pretty please with a cherrry on top, some examples???? Im a chemistry Student by the way.

THNAK YOU!!!!!!! ;^)

- SIG FIGS -
**DrBob222**, Thursday, September 20, 2012 at 11:43pm
Here is a good site?

http://www.chemteam.info/SigFigs/SigFigs.html

Zeros before the number don't count. zeros after the decimal point count. Zeros between two numbers count.

0.22 has two.

220.0 has four.

202 has three.

- SIG FIGS -
**Elizabeth**, Wednesday, September 30, 2015 at 6:00pm
22.0 has 2 significant figures

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