Chemistry
Mrs. Westphal
Name:________________
Date:________________
Scientific Notation &
Sig Figs
Convert each of the following into scientific notation. (In a few cases, it might be easier to take
the number out of scientific notation and then put it back into it.)
1. 727 _____________________________
2. 172000
_____________________________
3. 0.000984
_____________________________
4. 200.0 x 102
_____________________________
5. 0.014 x 102
_____________________________
6. 2560000000000000000000000000000000000
_____________________________
Convert each into standard notation.
7. 1.56 x 104
_____________________________
8. 3.6 x 10-2
_____________________________
9. 736.9 x 105
_____________________________
10. 0.0059 x 105 _____________________________
11. 0.00059 x 10-1 _____________________________
Calculate the following. Give the answer in correct scientific notation.
12. 2.34 x 1065
+9.2 x 1066
13. 313.0
- 1.2 x 103
Calculate the following. Give the answer in correct scientific notation.
14. 8.95 x 1076 / 1.25 x 1056
15. (4.5 x 1029)(2.45 x 1010)
Chemistry
Mrs. Westphal
Name:________________
Date:________________
Give the number of significant figures in each of the following.
16. 1.05g _______
17. 0.0003040mm _______
18. 29000 ± 10 ft _______
19. 0.90 x 1045L _______
20. The number eggs (12) that make up a dozen _______
Round each of the following to 3 significant figures.
21. 77.0653 ______________
22. 0.00023350 ______________
23. 2.895 x 1021 ______________
24. 6,300,178.2 ______________
25. 10.2030 ______________
26. 14.00000 ______________
Determine the answer for each of the following. Be sure to use the correct number of
significant figures.
27. 17.34
28. 9.8
4.900
- 4.762
+23.1
29. 3.96 x 6.05 x 420 =
30. 14.1 / 5 =