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[PDF File]Significant Figures - Johns Hopkins University
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numbers have an infinite number of significant figures. For example: there are exactly 60 seconds in 1 minute. 325 seconds = 5.42 minutes. 3. For addition or subtraction, round off the result to the leftmost decimal place. For example: 40.123+20.34=60.46. 4. For multiplication or division, round off the result to the smallest number
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[PDF File]Practice Worksheet for Significant Figures
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Period:_____ Practice Worksheet for Significant Figures Name:_____ Identify the sums or differences of the following to the correct number of significant figures: 41) 8.41 X 1014 + 9.71 X 1012 = 8.51 E 14 42) 5.11 X 1023 - 4.2 X 1021 = 5.1 E 23 43) 8.2 X 1030 + 4.560 X 1023 = 8.2 E 30 44) 6.023 X 10-23 - 2.1 X 10-20 = -2.9 E -20 Express the product and the quotients of the following to the ...
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[PDF File]A Short Guide to Signiﬁcant Figures
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Rules for rounding oﬀ numbers (1) If the digit to be dropped is greater than 5, the last retained digit is increased by one. For example, 12.6 is rounded to 13. (2) If the digit to be dropped is less than 5, the last remaining digit is left as it is. For example, 12.4 is rounded to 12.
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[PDF File]Standard Practice for Using Signiﬁcant Digits in Test Data ...
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Standard Practice for Using Signiﬁcant Digits in Test Data to Determine ... rounding method. 1.4 The system of units for this practice is not speci-ﬁed. Dimensional quantities in the practice are presented only ... 5.3.3 If the absolute method is to apply to all speciﬁed limits given in a table, this may be indicated by including a ...
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[PDF File]Rounding and Significant Technical Report
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9.5 Results from the measurement of Method Blank samples results should be treated as analytical data and reported with the same number of significant figures as the associated sample data. 10. Rounding Rules . 10.1 When the digit following the last the last significant digit is less than 5, the number remains unchanged (round down.)
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[PDF File]HOW TO ROUND OFF AN ANSWER TO A CALCULATION …
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(The 5 is the first non-zero digit, so the 5 and both of the following digits are significant.) ... If the calculation involves both rules, though, you must keep track of the correct number of digits ... in each step. To avoid rounding errors in the final answer, keep track of the valid digits, but do not actually round off until your final answer.
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[PDF File]FIELD SAMPLING AND TESTING MANUAL ROUNDING …
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ROUNDING OFF RULES. A. When the figure next beyond the last place to be retained is less than 5, retain unchanged the figure in the last place retained. ... rounding off 3.45 and 3.55 to one decimal gives 3.4 and 3.6, respectively). The last part of the rule is supposed to ensure that in discarding exactly half a
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[PDF File]Significant Figure Rules
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2. If it is more than 5, increase by 1 the number to be rounded, that is, the preceeding figure. 3. If it is 5, round the number so that it will be even. Keep in mind that zero is considered to be even when rounding off. Example #1 - Suppose you wish to round 62.5347 to four significant figures. Look at the fifth figure. It is a 4, a number ...
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[PDF File]Step by Step: Significant Figures III. Rules for Rounding ...
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Rules for Rounding with Significant Figures a) Addition/Subtraction ... The first sum should have been rounded to 41.5, which has 3 significant figures, while the second sum should have been rounded to 4.7, which has 2 significant figures. 2 significant figures is least, so our original answer of …
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Volume III, Section 4
4.3.1 Rounding of Reported Data . ... 4.3.2.1 Definitions and Rules for Significant Figures . ... Section 4-Basic Statistics and Data Presentation Page 5 of 26 This document is uncontrolled when ...
rounding numbers rules

Chemistry rounding rules for 5