1. Scientific Notation

2. Today’s lesson will focus on
Quiz Time
A googol is: (pick one)
a. Something you dress up as for Halloween
b. A new kind of candy with gooey stuff in the center
c. The number 10100
Today’s lesson will focus on
powers with a base of 10!

3. Positive powers of 10 4.5 x 104 = 4.5 x (10 x 10 x 10 x 10)
= 45000 1 3 4 2
What is the relationship between the exponent on the 10 and the number of places the decimal moved?

4. Negative powers of 10 2.5 x 10-3 = 2.5 x (1/10 x 1/10 x 1/10)= 3 1 2
What is the relationship between the exponent on the 10 and the number of places the decimal moved?

5. When going from Scientific Notation
to decimal notation
a x 10n
Positive exponent = move decimal place to right n amount of times
a x 10-n
Negative exponent = move decimal place to left n amount of times

6. a = number with only ONE digit
Scientific Notation
a x 10n
a = number with only ONE digit
to the left of the decimal
DIGIT = the numbers from 1 to 9

7. Write the following number in Scientific Notation
Example
Write the following number in Scientific Notation
Move 1 decimal place:
Move 2 decimal places:
Move 3 decimal places:
Move 4 decimal places:
Move 5 decimal places:
1.28 x 105

8. Write the following number in Scientific Notation
Example
Write the following number in Scientific Notation
Move 1 decimal place:
Move 2 decimal places:
Move 3 decimal places:
Move 4 decimal places:
1.6 x 10-4

9. Putting numbers into Scientific Notation
Large number = positive exponent
(move decimal to left)
Small number = negative exponent
(move decimal to right)

10. Brain Break – Fun Facts! 1033 = Decillion 109 = Billion 1036
= Undecillion
1012
= Trillion
1015
= Quadrillion
1039
= Duodecillion
1018
= Quintillion
1045
= Quattuordecillion
1024
= Septillion
1054
= Septemdecillion
1057
= Octodecillion
1027
= Octillion
1060
= Novemdecillion
1030
= Nonillion

11. Why do we need Scientific Notation?
To calculate very LARGE or very SMALL numbers

12. Let’s Practice
Workbook
p.39 #1,2
p.40 #4,5,6,7,8,9,10