2.1 Significant Figures

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    Significant Figures Rules for Zeroes

    SIGNIFICANT FIGURES RULES FOR ZEROES
    1. Zeroes at the beginning of a number are NOT significant.
    2. Zeroes at the end of a number and to the left of the decimal point are NOT significant.
    3. Zeroes at the end of a number and to the right of the decimal point ARE SIGNIFICANT.
    4. Zeroes in between significant figures ARE SIGNIFICANT.

    Significant Figures Rules for Multiplication/Division and Addition/Subtraction

    SIGNIFICANT FIGURES RULES FOR ADDITION/SUBTRACTION AND MULTIPLICATION/DIVISION
    Multiplication / Division Addition / Subtraction
    The answer is rounded to the same number of significant figures as the term with the fewest significant figures.
    (2.40)(1.09)(310) =
    The answer is rounded to the same decimal place as the most precise decimal place in the least precise term.
    104.17 + 36 + 4720 =