Q: How is the number 85,272,457 written in Scientific Notation?
A: 8.5272457 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 85,272,457 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: | 8 | . | 5 | 2 | 7 | 2 | 4 | 5 | 7 |
| 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 = 8.5272457
b = 7
Now the whole thing:
8.5272457 x 107
Check your work:
107 = 10,000,000 x 8.5272457 = 85,272,457
| 85,272,455 | 85,272,456 | 85,272,458 | 85,272,459 |
| 8.5272455 x 107 | 8.5272456 x 107 | 8.5272458 x 107 | 8.5272459 x 107 |