1. 9.5 Scientific Notation
Objective: students will learn about scientific notation. They will also be able to perform many operations with them.

2. Information Written as c x 10n Forms: C number between 1 and 10
N is an integer
Forms:
Standard = 4500
Scientific =
4.5 x 103

3. Write number in scientific notation
3100
.00047
72,000,000
.027

4. St. write in sc. not.
43,500
1200
.00525

5. Standard Form
4.5 x 10-3
5 x 104
6.3 x 104
3.2 x 10-3

6. St. standard form
4.18 x 103
1.03 x 10-6
2.23 x 102
6 x 10-4

7. Ordering To order; Order 2.4 x 104, 3.3 x 103 and 50,000.
Convert to sc. Not.
Order by power
If same power, order by number
Order original number.
Order 2.4 x 104, 3.3 x 103 and 50,000.

8. Order the following
4.3 x 104,
3.2 x 104, 42,000
1.5 x 10-4 ____ 2.6 x 10-3
2.5 x 105 ____ 3.5 x 105

9. Multiplying scientific notations
Steps:
Multiply numbers
Add exponents
(1.5 x 10-4) x
(5 x 104)

10. St.- Multiply sc. Not.
(2.5 x 103) x (3 x 102)
(2 x 107) x (7 x 103)

11. Wrap-up
Questions/comments
HW: Worksheet

12. Workbook 17. (6 x 102) x (3 x 103) 19. (4 x 10-3) x (2.4 x 107)
22. Order 2400, 2.5 x 102, 2.3 x 103

13. Questions Write 76,200 in scientific notation.
Write 5 x 10-7 in standard form.
Order least to greatest 8700, 1.97 x 103, 3.98 x 104
Solve (6 x 107)(9 x 105)