Wks Significant Figures #1

Chemistry Worksheet: Significant Figures #1 Enter the number of significant figures for each of the numbers below. 1. 2.234 _________________

6. 124.3 _________________

2. 0.0005 ________________

7. 0.00210 _______________

3. 5400 _________________

8. 3.1415926 _____________

4. 7603 _________________

9. 4009.20 _______________

5. 12 apples ______________

10. 1.0045 ________________

Perform the following addition and subtraction calculations and express your answer to the correct number of significant figures. 11. 2.01 + 4.23 + 16.0057 = 12. 45 + 25 + 0.006 = 13. 1256 + 23.04 + 84.942 = 14. 36.72 - 9.627 = 15. 183 - (26.9 + 7.32) = Perform the following multiplication and division calculations and express your answer to the correct number of significant figures. 16. 23.5 x 9.1 = 17. 7033.0 x 34.3 = 18. 23 x 74.2 x 503.04 = 19. 674 / 30.00 = 20. 63556 / 12 =

Laliberte, 9/9/08