Lesson 2-9 Notes
Scientific Notation
Scientific Notation
A shorthand for writing numbers with a large
number of digits
1.8 x 104 is 180000 written is scientific
notation
A number written is scientific notation must be a number from 1 – 9
multiplied by a power of 10.
Translating Scientific Notation to
Standard Notation
Look at the exponent. A positive exponent means move the
decimal to the right. A negative exponent means move the
decimal to the left.
2.64 x 107 = 26,400,000
1.35 x 10-4 =
.000135
-5.8 x 106 = -5,800,000
Translating Standard Notation to
Scientific Notation
1) Move the decimal to make a
number between 1 and 10.
2) Set up scientific notation.
A number times a power of 10
3) If you start with a decimal your
exponent will be negative.
4) If you start with a whole number
your exponent will be positive
Examples
0.000002
=2 x 10-6
4,890,000
= 4.89 x 106
Classwork – pg 98 – (1-9)