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Significant Figures - Purdue University
Ex. 100. ( 3 sig figs. B. Rules for addition/subtraction problems . Your calculated value cannot be more precise than the least precise quantity used in the calculation. The least precise quantity has the fewest digits to the right of the decimal point.
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[DOCX File]Sig Figs, Scientific Notation and Conversions
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m (2 sig figs) 3. Addition / Subtraction a) First perform all the operations. b) Round off your result so that you include only 1 . uncertain digit. The last digit of any measurement is considered . uncertain. When an . uncertain. digit is added to (or subtracted from) a certain digit, the result is …
rules for sig fig addition and subtraction

[DOC File]Sig Figs Cheat Sheet - PC\|MAC
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Sig Figs. Rule for . Addition & Subtraction = Least number of . decimal places (highest value) Perform the following calculations and round according to the rule above. 1) 8.20 + 2 = 2) 13.59 + 23.25 + 20 = 3) 42.828 + 67.4629 =
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[DOC File]Rules for Using Significant Figures in Mathematical Operations
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All zeroes to the right of a decimal point, but to the left of a non-zero figure, are NOT significant: 0.00647 has three sig. figs. All zeroes to the right of a decimal point and following a non-zero figure are significant: both 0.07080 and 20.00 have four sig. figs. Rules for Addition and Subtraction (think place!)
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[DOC File]SIGNIFICANT FIGURES
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A silly (correct) example of multiplication with sig figs is: 164 × 1 = 200 Mixed operations: If you have a problem with mixed addition/subtraction and multiplication/division, keep all of the digits until you’re finished, but keep track of the last sig fig in each step by putting a line over it.
when subtracting how many sig figs

[DOC File]Significant Figures
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How do you determine the number of sig figs in a number or measurement? How do you round to the correct number of sig figs when multiplying, dividing, adding, or subtracting? ... That is, you must round between moving from a multiplication or division step to an addition or subtraction step. Practice: Determine the number of significant figures ...
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[DOC File]Significant Figures Practice Worksheet
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5. 3.14 represents “π to _____ sig figs.” 6. π + 27 = 7. 1 x 2.456723189468238979874924 = (Don’t use your calculator!) Let’s look at addition and subtraction: 8. 145 lbs – 3.0 lbs = (Hint: Line up the decimal places like you did in elementary school) 9. 145 lbs – 0.4 lbs = 10.
adding with sig figs

Sig figs addition and subtraction