Q: How is the number 258,064,385 written in Scientific Notation?
A: 2.58064385 x 108
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 258,064,385 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 | 8 | 0 | 6 | 4 | 3 | 8 | 5 |
Decimal Count: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
There are 8 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 = 2.58064385
b = 8
Now the whole thing:
2.58064385 x 108
Check your work:
108 = 100,000,000 x 2.58064385 = 258,064,385
258,064,383 | 258,064,384 | 258,064,386 | 258,064,387 |
2.58064383 x 108 | 2.58064384 x 108 | 2.58064386 x 108 | 2.58064387 x 108 |