Q: How is the number 25,101,341 written in Scientific Notation?
A: 2.5101341 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 25,101,341 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 | . | 5 | 1 | 0 | 1 | 3 | 4 | 1 |
| 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 = 2.5101341
b = 7
Now the whole thing:
2.5101341 x 107
Check your work:
107 = 10,000,000 x 2.5101341 = 25,101,341
| 25,101,339 | 25,101,340 | 25,101,342 | 25,101,343 |
| 2.5101339 x 107 | 2.510134 x 107 | 2.5101342 x 107 | 2.5101343 x 107 |