# Presentation1adendum(sigfigs) - 0.000123 3 sig figs 4....

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There have been several questions this week concerning significant figures, so I decided to post these old slides from a previous year. I think that using the correct significant figures will be most important for laboratory assignments and reports and somewhat less important for homework and prelims.

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Significant Figures in Values 1. All non-zero numbers are significant 2. Zeros between non-zero numbers are significant. 10203 5 sig figs 3. Zeros before or after the decimal point and before any non-zero numbers are not significant.
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Unformatted text preview: 0.000123 3 sig figs 4. Terminal zeros before the decimal point are ambiguous. 12300 3-5 sig figs? 5. Terminal zeros after the decimal are significant. 12.300 5 sig figs Calculations and Sig Figs 1. The result of multiplication and division has as many sig figs as the quantity with the fewest sig figs. 123 x 12,345 = 1.52x10 6 2. The result of adding or subtracting has as many digits after the decimal as the quantity with the fewest significant digits after the decimal. 12.345 1.23 = 11.12...
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## This document was uploaded on 10/26/2011 for the course CHEM 1007 at Cornell University (Engineering School).

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Presentation1adendum(sigfigs) - 0.000123 3 sig figs 4....

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