Q: How is the number 25,222,628 written in Scientific Notation?
A: 2.5222628 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 25,222,628 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 | 2 | 2 | 2 | 6 | 2 | 8 |
| 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 = 2.5222628
b = 7
Now the whole thing:
2.5222628 x 107
Check your work:
107 = 10,000,000 x 2.5222628 = 25,222,628
| 25,222,626 | 25,222,627 | 25,222,629 | 25,222,630 |
| 2.5222626 x 107 | 2.5222627 x 107 | 2.5222629 x 107 | 2.522263 x 107 |