Here is a good site for the rules for significant figures, multiplication, division, addition, and subtraction.
http://www.chemteam.info/SigFigs/SigFigs.html
perform the operation & leave answer correct amount of significant numbers.
A) 3.76+4.318+ 0.005
B) 29.0- 52.0+ 37.
please help don't know how to do !
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