Math ATube.com
Subjects
...........................................................................................................................................................................................
 | |  | |  | |  | |  | |  | |  |
Scientific Notation
Scientific Notation
Scientists have developed a shorter method to
express very large numbers. This method is called
scientific notation. Scientific Notation is based on
powers of the base number 10.
express very large numbers. This method is called
scientific notation. Scientific Notation is based on
powers of the base number 10.
In scientific notation, you move the decimal place until you have
a number between 1 and 10. Then you add a power of ten that
tells how many places you moved the decimal.
a number between 1 and 10. Then you add a power of ten that
tells how many places you moved the decimal.
Example: 2,890,000,000 becomes 2.89 x 10
9
The number 157,000,000,000 in scientific notation is
written as : 1.57 x 10
written as : 1.57 x 10
11
Remember any whole number can be written with a decimal point without
changing the value. Example: 157,000,000,000 = 157,000,000,000.0
changing the value. Example: 157,000,000,000 = 157,000,000,000.0
Now, count how many places you moved the decimal
point. You moved it 11 places to get 1.57
point. You moved it 11 places to get 1.57
1.57 x 10
11
= 157,000,000,000