Q: How is the number 70,582,042 written in Scientific Notation?
A: 7.0582042 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 70,582,042 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: | 7 | . | 0 | 5 | 8 | 2 | 0 | 4 | 2 |
| 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 = 7.0582042
b = 7
Now the whole thing:
7.0582042 x 107
Check your work:
107 = 10,000,000 x 7.0582042 = 70,582,042
| 70,582,040 | 70,582,041 | 70,582,043 | 70,582,044 |
| 7.058204 x 107 | 7.0582041 x 107 | 7.0582043 x 107 | 7.0582044 x 107 |