Q: How is the number 61,442,489 written in Scientific Notation?
A: 6.1442489 x 107
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 61,442,489 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: | 6 | . | 1 | 4 | 4 | 2 | 4 | 8 | 9 |
| Decimal Count: | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
There are 7 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 = 6.1442489
b = 7
Now the whole thing:
6.1442489 x 107
Check your work:
107 = 10,000,000 x 6.1442489 = 61,442,489
| 61,442,487 | 61,442,488 | 61,442,490 | 61,442,491 |
| 6.1442487 x 107 | 6.1442488 x 107 | 6.144249 x 107 | 6.1442491 x 107 |