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Q: What are the rules in determining the number of significant figures?

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rules to follow in determining the number of sigificant * zero's are not significant at the end of the whole number which does not have a decimal point * EXAMPLE: 3400 ( 2 sf's) 2000 (2sf's)*

The least number of significant figures in any number of the problem determines the number of significant figures in the answer which in this case is 270.9

The least number of significant figures in any number of the problem determines the number of significant figures in the answer which in this case is 270.9

The least number of significant figures in any number of the problem determines the number of significant figures in the answer which in this case is 656.64

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rules to follow in determining the number of sigificant * zero's are not significant at the end of the whole number which does not have a decimal point * EXAMPLE: 3400 ( 2 sf's) 2000 (2sf's)*

The number 3400 has two significant figures. The rules for significant figures can be found by using the link to our friends at Wikipedia.

rules for significant figues...............

The least number of significant figures in any number of the problem determines the number of significant figures in the answer which in this case is 270.9

The simple rule is: no more significant figures than the least accurate of the values in the computation. For multiplication and division, the result should have as many significant figures as the measured number with the smallest number of significant figures. For addition and subtraction, the result should have as many decimal places as the measured number with the smallest number of decimal places. (Rounding off can be tricky, but that would be another thread)

The least number of significant figures in any number of the problem determines the number of significant figures in the answer which in this case is 656.64

Four significant figures. Review you rules for significant figures. Some chemistry teachers, especially at the college level, are very concerned with significant figures.

If they did not use rules all their calculations would simply lead to random digits!

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