Please solve all worksheet Significant Figures Practice WorksheetHow many significant figures do the following numbers have?1234 4Hw1)1. 0.022)0.023 22. 0.0203)890 23. 5014)91010 44. 501.05)9010.055. 5,0006)1090.0010 86. 5,000.7)0.00120 37: 6,051.008)3.4 x 10 28. 0.00059)9.0 x 103 29. 0.102010)9.010 x 102 y10. 10,00111)0.00030 112)1020010 _611. 804013)780.3.12. 0.030014)1000 113. 699.515)918.010 b14. 2.000 x 10216)0.0001 115. 0.9010017)0.0039016. 90,10018)8120 317. 4.7 x 10819)7.991 x 1010 418. 10,800,000.20) 72 219. 3.01 x 102110. 0.000410http://www.chemfiesta.com USE OF SIGNIFICANT FIGURESZEROS AS SIGNIFICANT FIGURES - In measurements that have been reported correctly, allnonzero numbers are significant figures. A zero may or may not be a significant figure, dependingupon its position and function as part of the number.1.Zeros which appear in the front portion of a number are neyer significant figures.Example: 0.0039 has two significant figures because the zeros are used to determine thedecimal point.2.Zeros which appear between nonzero digits of a mumber are always significant figures.Example: 0.304 and 0.0203 both have three significant figures.Zeros at the end of a mimber may or may not be significant figures. They are significant ifthey are followYed by a decimal point (1600.), or if they are to the right of the decimalpoint (16.00). Both 1600. And 16.00 have four significant figures.In a mumber with an understood decimal point, the final zeros are considered to beindicators of the decimal point and are not significantExample: 16,000 has two significant figures.4.A)How many significant figures in each of the following?3.a) 2077b) 20,77c) 20770d) 0,207e) .2070f) 0.002078).00202000h) 4.0020i) 3.000) 3,000In doing calculations involving measured values, we must express our results so that they containonly the number of significant figures justified by the certainty of the original measurements. It isfrequently necessáry to round off numbers so that the result doesn't appear to be more certainthan the original measurements.ROUNDING OFF RULESWhen the number dropped is less than 5, the preceding mumber remains unchanged.Example: 8.3734 when expressed to 3 significant figures becomes 8.37.2.When the number dropped is 5 or more, the preceding number is increased by 1.Example: 3.6287 when expressed to 3 significant figures is 3.63.B)Round off each of the following numbers to four significant figures.a) 125,639b) .012544c) 12575· d) 0.12556e) 125,668f) 12565

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There are certain rules for finding significant figures.
1) Digits other than zero are always…

Significant Figures Practice Worksheet How many significant figures do the following numbers have? Hw 1) 1234 4 1. 0.02 2) 0.023 2 2. 0.020 3) 890 2 3. 501