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Significant Figures

Significant Figures. Rule 1: Digits other than zero are significant. 96 g = 2 Sig Figs 152 g = __________ Sig Figs 61.4 g = 3 Sig Figs 21.567 g = __________ Sig Figs 0.52 g = 2 Sig Figs 0.763 g = __________ Sig Figs. Rule 2: Zeros appearing between nonzero digits are significant.

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Significant Figures

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  1. Significant Figures

  2. Rule 1: Digits other than zero are significant 96 g = 2 Sig Figs 152 g = __________ Sig Figs 61.4 g = 3 Sig Figs 21.567 g = __________ Sig Figs 0.52 g = 2 Sig Figs 0.763 g = __________ Sig Figs

  3. Rule 2: Zeros appearing between nonzero digits are significant 306 g = 3 Sig Figs 40601 g = __________ Sig Figs 5.029 g = 4 Sig Figs 7000.01 g = __________ Sig Figs 4.007 g = 4 Sig Figs 21010101 g = __________ Sig Figs

  4. Rule 3: Zeros appearing in front of all nonzero digits are NOT significant. 0.095897 m = 5 Sig Figs 0.0004526 kg = __________ Sig Figs 0.0009 kg = 1 Sig Fig 0.00721 kg = __________ Sig Figs

  5. Rule 4: Zeros after or to the right of the decimal point are significant. 9.000 000 000 = 10 Sig Figs 7.940 m = __________ Sig Figs 4.7200 m = 5 Sig Figs 1.00000 m = __________ Sig Figs 82.0 m = 3 Sig Figs 789.10 m = __________ Sig Figs

  6. Rule 5: Zeros at the end of a number are significant if a decimal point is present. 7000 kg = 1 Sig Figs 100100 kg = __________ Sig Figs 7000. kg = 4 Sig Figs 200. m = __________ Sig Figs

  7. Rule 6: Only the coefficient in scientific notation is significant, not the power or exponent. 3.64 x 104 m = 3 Sig Figs 0.210 x 103 m = __________ Sig Figs 8.067 x 103 m= 4 Sig Figs 9.416 x 108 m = __________ Sig Figs 6.4800 x 107 m = 5 Sig Figs 410.0 x 103 m = __________ Sig Figs 1 x 104 m = __________ Sig Figs 78400 x 10-3 m = __________ Sig Figs

  8. Addition/Subtraction: After adding or subtracting, round off answer to least accurate number. 13.1 10.5 126.23 + 2.34 9 91.4 15.44 ==> + 76.26 +434.163 95.76 ==> 641.793 ==>

  9. Multiplication/Division: After multiplying or dividing, round off answer to least number of significant figures. 5.63 432.1 632 x 0.20 x 0.002 ÷ 4.3 1.126 ==> ==>

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