Scientific Notation and Significant Figures

1. Scientific Notation and Significant Figures

2. Scientific Notation • When it says to write your answers in the form: Then it means put your answer in scientific notation! where

3. Scientific Notation • 9 488 800 000 000 000 • 9.48 x 1015 • 000 000 000 000 324 • 3.2 x 10-13 . .

4. You Do #1 Write 345, 239, 235 in scientific notation • 3.45 X 107 • 3.45 x 108 • 34.5 x 107 • 3.45 x 10-8 [Default] [MC Any] [MC All]

5. .000 000 71 • 7.1 x 10-9 • 7.1 x 10-7 • 71 x 10-8 [Default] [MC Any] [MC All]

6. 5432.6; answer all that apply • 5.43 x 101 • 5.4 x 103 • 5.43 x 103 [Default] [MC Any] [MC All]

7. .325 671 • 32.6 x 10-2 • 3.26 x 10-1 • 3.26 x 101 [Default] [MC Any] [MC All]

8. 2.5 x 10-4 • .00025 • 0.0

9. 3.24 x 108 • 324000000 • 0.0

10. Significant Figures 3 sig figs-- 43600 • 43 620 • .036821 6 is the third significant figure. Look at 4th figure it’s < 5, so don’t change the 6. Make everything else zeros 3 sig figs .0368 8 is the third significant figure because the 0 in front is a place holder. look at the next digit. It’s < 5, so leave the 8. Leave off all other numbers

11. Significant Figures 3 sig figs– 10 100 • 10 076 • .203 513 0 is the third significant figure. The zeroes are significant, because it lies between two non-zero digits. The digit behind the 0 is 5 or more, so round the 0 to a 1 and make all other places zeroes. 3 sig figs .204 3 is the third significant figure. Look at the next digit. It is 5 or more, so round the 3 to a 4. Leave off all other numbers.

12. Significant Figures • 18.997 3 sig figs– 19.0 9 is the third significant figure. Look at the next digit. It is 5 or more, so round the 9 to a 0 and the 8 to a 9. Leave off all other numbers.

13. .008 6 [1] • .009 • 0.0

14. 523 [1] • 500 • 0.0

15. 4.053 [3] • 4.05 • 0.0

16. 647 [2] • 650 • 0.0

17. 3081 [2] • 3100 • 0.0