Q: How is the number 788,465,869 written in Scientific Notation?
A: 7.88465869 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 788,465,869 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: | 7 | . | 8 | 8 | 4 | 6 | 5 | 8 | 6 | 9 |
| 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 = 7.88465869
b = 8
Now the whole thing:
7.88465869 x 108
Check your work:
108 = 100,000,000 x 7.88465869 = 788,465,869
| 788,465,867 | 788,465,868 | 788,465,870 | 788,465,871 |
| 7.88465867 x 108 | 7.88465868 x 108 | 7.8846587 x 108 | 7.88465871 x 108 |