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7/23/2019 0.12 Sig Fig Handout Answers
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7/23/2019 0.12 Sig Fig Handout Answers
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Give the number of significant digits in each of the following measurements:
1. 1278.50 __________ 7. 8.002 __________ 13. 3.050 __________
2. 120000 __________ 8. 823.012 __________ 1. 0.17 __________
3. !0027.00 __________ !. 0.00578! __________ 15. "271.!1 __________
. 0.00535"7 __________ 10. 2."0 __________ 1". " __________
5. "70 __________ 11. 52000. __________ 17. 3.7 __________
". 0.00730 __________ 12. 2"53008.0 __________ 18. 387"5 __________
#ound off the following numbers to three significant digits:
1!. 120000 _______________ 22. .53"1! _______________
20. 5.57 _______________ 23. 3."5! _______________
21. 0.00087"! _______________ 2. 87"!3 _______________
$erform the following o%erations giving the %ro%er number of significant figures in the answer:
25. 23. & 1 _______________ 28. 0.005 ' 0.0007 _______________
2". 7.8!5 ( 3. _______________ 2!. 7.8!5 ) 3 _______________
27. 0.0!5 & 1.7 _______________ 30. 0.2 ) 0.0005 _______________
Give the number of significant digits in each of the following measurements:
1. 1 278.50 " 7. 8.002 13. 3.050 52. 120 000 2 8. 823.012 " 14. 0.17 33. !0 027.00 7 9. 0.00578! 1. "271.!1 "4. 0.00535"7 5 10. 2."0 3 1!. " 1. "70 2 11. 52 000. " 17. 3.7 3!. 0.00730 3 12. 2 "53 008.0 8 18. 387 "5 "
"ound off the following numbers to three significant digits:
19. 120 000 # 1.20 & 105 22. 4.3!19 # .520. .47 # 5." 23. 43.!9 # 3.7
21. 0.00087!9 # 0.000877 or 8.77 $ 10%4 24. 87! 493 # 87" 000 or 8.7" & 105
&erform the following o'erations giving the 'ro'er number of significant figures in the answer.
2. 23.4 $ 14 327.! # 330 or 3.3 & 102
2!. 7.89 ( 3.4 11.29 # 11.327. 0.094 $ 1.47 0.138 91 # 0.13!28. 0.00 % 0.0007 0.0043 # 0.0029. 7.89 ) 34 0.232 20 882 # 0.2330. 0.2 ) 0.000 0.200 # 0.2
7/23/2019 0.12 Sig Fig Handout Answers
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*nswer the following b+ showing the arithmetic answer and then the answer with the correctnumber of significant digits.a, 0.003 g ( 1.224 1 g b, 7. cm - 22 cm
c, 1.4 $ 10%3 m ( 2.22 $ 10%4 m d, 23.987 1 g - 0.002 34 g
*nswer the following b+ showing the arithmetic answer and then the answer with the correct number ofsignificant digits.
a, 7.8 m $ 12.4 m b, 0.0034 cm3 $ 22. g)cm3
c, 22.4 /2 ) 4 / d, 42. g ) 22. m/
e, 1.22 $ 10! mol $ 22.4 g)mol
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*nswers to +ignificant ,igit -orsheet:
Give the number of significant digits in each of the following measurements:
1. 1 278.50 " 7. 8.002 13. 3.050 52. 120 000 2 8. 823.012 " 14. 0.17 33. !0 027.00 7 9. 0.00578! 1. "271.!1 "4. 0.00535"7 5 10. 2."0 3 1!. " 1. "70 2 11. 52 000. " 17. 3.7 3!. 0.00730 3 12. 2 "53 008.0 8 18. 387 "5 "
"ound off the following numbers to three significant digits:
19. 120 000 # 1.20 & 105 22. 4.3!19 # .5
20. .47 # 5." 23. 43.!9 # 3.7
21. 0.00087!9 # 0.000877 or 8.77 $ 10%4 24. 87! 493 # 87" 000 or 8.7" & 105
&erform the following o'erations giving the 'ro'er number of significant figures in the answer.
2. 23.4 $ 14 327.! # 330 or 3.3 & 102
2!. 7.89 ( 3.4 11.29 # 11.3
27. 0.094 $ 1.47 0.138 91 # 0.13!
28. 0.00 % 0.0007 0.0043 # 0.00
29. 7.89 ) 34 0.232 20 882 # 0.23
30. 0.2 ) 0.000 0.200 # 0.2
