Q: How is the number 272,183,781 written in Scientific Notation?
A: 2.72183781 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 272,183,781 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: | 2 | . | 7 | 2 | 1 | 8 | 3 | 7 | 8 | 1 |
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 = 2.72183781
b = 8
Now the whole thing:
2.72183781 x 108
Check your work:
108 = 100,000,000 x 2.72183781 = 272,183,781
272,183,779 | 272,183,780 | 272,183,782 | 272,183,783 |
2.72183779 x 108 | 2.7218378 x 108 | 2.72183782 x 108 | 2.72183783 x 108 |