1. Scientific Notation Continues….
Tuesday. Oct 22, 2013
Math 8

2. Write in Scientific Notation
25.4 × 10 7
x 107
Needs to be between
Zero and Ten…
25.4
Add exponents
2.54 x 101
x 107
2.54 x 108

3. Write in Scientific Notation
37.5 × 10 −5
37.5
3.75 x 101
x 10-5
3.75 x 10-4

4. Practice
18.45 ×

5. Practice
81 ×

6. Multiply x 2.5 × 10 4 3 × 10 2 7.5 106 Add Exponents
2.5 × × 10 2
7.5 x
106
Is it between Zero and Ten??
Yes!! Then it is written in Scientific Notation

7. Multiply
(8.5 × 10 −2 ) 7 × 10 −7
59.5
x 10-9
NOT between 0 and 10
So, not in Scientific
Notation.
59.5
5.95 x 101
x 10-9
5.95 x 10-8

8. Practice
6 ×
This is the same as….
6 × × 10 8

9. Assignment:
Text Book
Page 207: #