Q: How is the number 801,224,857 written in Scientific Notation?
A: 8.01224857 x 108
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 801,224,857 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: | 8 | . | 0 | 1 | 2 | 2 | 4 | 8 | 5 | 7 |
| 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 = 8.01224857
b = 8
Now the whole thing:
8.01224857 x 108
Check your work:
108 = 100,000,000 x 8.01224857 = 801,224,857
| 801,224,855 | 801,224,856 | 801,224,858 | 801,224,859 |
| 8.01224855 x 108 | 8.01224856 x 108 | 8.01224858 x 108 | 8.01224859 x 108 |