[Ap Chem]Significant figures

jac0625
Thu, 04 May 2006 02:25:12 +0000

It says in my TPR prep book:

“When multiplying and dividing, the result should have the same number of significant figures as the number in the calculation with the smalelst number of significant figures.”

But what about 31 X 0.7=???

isn’t the answer 21, rather than 21.7???

i thought the result was supposed to match with the LEAST accurate figure.

help me out here.

Oh, and about the calculator… does the calculator have to be a graphing one??? or is it enough to be just a scientific one? or can it just be one of those really basic ones, that can only calculate sin, tan, cos, square roots, etc…