Rules in Counting and Solving with Significant Figures

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5 Terms

1
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Nonzero Digits

  • every nonzero digit is significant

    • 24 = 2 SF

    • 3.56 = 3 SF

    • 7 = 1 SF

2
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Sandwiches O’s

  • zero’s between non-zeros are significant

    • 7003 = 4 SF

    • 40.9 = 3 SF

3
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Leading O’s

  • zeros appearing in front of non-zero digits are not significant

  • act as placeholders

  • cant’ be dropped, show magnitude

    • 0.00024 = 2 SF

    • 0.453 = 3 SF

4
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Trailing O’s to the right of a decimal point

  • zero’s at the end of a number and to the right of a decimal point are significant

    • 43.00 = 4 SF

    • 1.010 = 4 SF

    • 1.50 = 3 SF

5
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Trailing O’s to the left of a decimal point

  • zeros at the end of a number and to the left of a decimal point are not significant

    • 300 = 1 SF

    • 27,300 = 3 SF