1. Final Jeopardy Question Number of Sig Figs Rounding 500 Mixed Math Multiply and Divide 100 200 300 400 500 400 300 200 100 Add And Subtract Sig Fig Questions 100 200 300 400 500

2. 0.004520 Back

3. 0.004520= 4

4. 390.0 Back

5. 390.0 = 4 Back

6. 54001 Back

7. 54001 = 5 Back

8. 2500

9. 2500 =2 Back

10. 12 Back

11. 12 = 2 Back

12. 1 sig fig 4.50123 Back

13. 5

14. 5 Sig Figs 0.00245351 Back

15. 0.0024535 Back

16. 4 Sig Figs 607.68 Back

17. 607.7 Back

18. 2 Sig figs 126

19. Back 130

20. Back What is the process you follow to round to a certain amount of sig figs?

21. 1) Count to the digit you are going to round 2) Look to the number to the right 3) If the number to the right is below 5 you leave the digit the same 4) If the number to the right is higher than you round the digit up 3) If the number to the right is 5… And digit is even then keep it the same And digit is odd then round it up to the next even number 4) If there are non-zero numbers after the 5 then round the digit up 5) Use zeroes as space fillers if they are needed. Back

22. 1200 cm + 34.5 cm – 12.877 cm Back

23. 1221.623 cm  1200 cm Back

24. 23 g/mL + 1.65 g/mL + 0.015 g/mL Back

25. 24.665 g/mL  25 g/mL Back

26. 40 L - 0.085 L Back

27. 39.915 L  40 L Back

28. 3.05 g + 6.1 g

29. 9.22 g  9.2 g Back

30. Explain the rule that is followed to round at the end of a calculation Back

31. 1)Look to the numbers in the calculation 2)Find the least accurate number 3)Round answer to have same last decimal place of the least accurate number. Back

32. 35.01 cm x 0.0324 cm x 14 cm x 10 cm Back

33. 158.80536 cm 4  200 cm 4

34. Back _1325.3 g_ 1100. mL

35. Back 1.20481818  1.205 g/mL

36. Back

37. 1.14334109 m  1.14 m Back

38. 12 g x 255 g

39. Back 3060 g 2  3100 g 2

40. Explain the rule to follow with sig figs when multiplying and dividing. Back

41. 1) Count number of sig figs in each number 2) Make answer have same number of sig figs as the number with the least amount

42. Back (23 kg + 345 kg) (0.0342 m + 12.3 m) (7.05 L – 2.0 L) (120 s - 57 s)

43. Back 14.4  14 kg * m L * s

44. Back * (2.0 kg – 1.05 kg)

45. Back 22.8  23 kg 2 * m 2 s 2

46. Back

47. 11.267605  10 cm * s

48. Back

49. 21.0463  21.05 nm/s

50. Explain the rules we follow to use sig figs in mixed math problems Back

51. 1)Follow PEMDAS to solve -Use rules for add/sub and multiply/divide when they apply P – Parenthesis E - Exponents and Roots M – Multiplication D - Division A - Adding S – Subtracting 2) Make answer have the same amount of sig figs as the number with the least amount Back

52. Explain why sig figs are used when making measurements and not counting. Back

53. Sig figs are only needed when there is an uncertain digits like when you are measuring. You are trying to make sure that your measurements are as accurate as possible. When you are counting there is no uncertainty. Back

54. Why is it important to average multiple trials during labs while using sig figs?

55. You are trying to minimize any error that occurred while making measurements in the lab. Back

56. Why do we round and use sig figs during measurements? Back

57. To account for any error that occurs and make sure our measurements are as accurate as possible. Back

58. How is rounding in math different than rounding in science?

59. Math – adding a point zero to a number doesn’t matter -accuracy is less important in a number -If a 5 is next to the number you are looking at the number rounds up -If a 4 or lower is next to the number you are looking at the number stays the same Science – adding more decimal places makes the number more accurate -all about making accurate measurements and accounting for error -zeroes count under certain rules -separate rules to round with 5’s Back

60. How are the rules for adding/subtracting different than the rules for multiplication/division? Back

61. Adding/Subtracting involves rounding the answer to match the same decimal place as the least accurate number in a problem. Dividing/Subtracting involves rounding the answer to match the number with the least amount of sig figs.

62. Back Explain how other techniques you used in the lab account for error?

63. Back -Percent error to see how accurate your data is and how much it was effected by error -Calculation of range and +/- amount to explain how much your data could be off the actual value.