1. Scientific Notation And Significant Digits
Objective: to use scientific notation and significant digits

2. Scientific notation
A number expressed in the form of n × 10x where 1 < n < 10 and x is an element of the integers
Example 2.3 × 103

3. Example change into scientific notation
429,000,000
4.29 × 108 move the decimal 8 places to the left
7.05 × 104 move the decimal 4 places to the right

4. Significant digits
Number of digits that have a purpose other than a place holder
Examples:
21000 has 2 significant digits
has 4 significant digits
2.10 × 104 has 3 significant digits
has 2 significant digits

5. Try These! Write each number in scientific notation
103,000
(5.03 × 10-3)(3.32 × 105)
1.03 × 105
2.1 × 10-3
1.003 × 102
3 × 105 solution
× 103 solution
End Show

6. Try These!

7. (5.03 × 10-3)(3.32 × 105)
(5.03 × 3.32)(10-3 × 105)
× 102
× 103
Try These!