The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.
Calculating scientific notation for a positive integer is simple, as it always follows this notation:
a x 10b
Follow the steps below to see how 112,024,250 is written in scientific notation.
To find a, take the number and move a decimal place to the right one position.
Now, to find b, count how many places to the right of the decimal.
New Number: | 1 | . | 1 | 2 | 0 | 2 | 4 | 2 | 5 | 0 |
Decimal Count: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
There are 8 places to the right of the decimal place.
Building upon what we know above, we can now reconstruct the number into scientific notation.
Remember, the notation is: a x 10b
a = 1.1202425 (Please notice any zeroes on the end have been removed)
b = 8
Now the whole thing:
1.1202425 x 108
Check your work:
108 = 100,000,000 x 1.1202425 = 112,024,250
112,024,248 | 112,024,249 | 112,024,251 | 112,024,252 |
1.12024248 x 108 | 1.12024249 x 108 | 1.12024251 x 108 | 1.12024252 x 108 |