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Significant Figures (Sig Fig) Rules

Significant Figures (Sig Fig) Rules. Determining Sig Figs. 1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant. 2) ALL zeroes between non-zero numbers are ALWAYS significant. 3) ALL zeros to the left of the number are NEVER significant

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Significant Figures (Sig Fig) Rules

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  1. Significant Figures (Sig Fig) Rules

  2. Determining Sig Figs • 1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant. • 2) ALL zeroes between non-zero numbers are ALWAYS significant. • 3) ALL zeros to the left of the number are NEVER significant • 4) Zeros to the right of the number are NOT significant if there is NO decimal. Zeros to the right of the number are ALWAYS significant if there IS a decimal point present.

  3. Addition and Subtraction When adding or subtracting, count the NUMBER OF DECIMAL PLACES. The answer cannot CONTAIN MORE PLACES AFTER THE DECIMAL POINT THAN THE SMALLEST NUMBER OF DECIMAL PLACES in the numbers being added or subtracted.

  4. Multiplication and Division When multiplying or dividing numbers, count the NUMBER OF SIGNIFICANT FIGURES. The answer cannot CONTAIN MORE SIGNIFICANT FIGURES THAN THE NUMBER BEING MULTIPLIED OR DIVIDED with the LEAST NUMBER OF SIGNIFICANT FIGURES.

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