Q: How is the number 805,004,749 written in Scientific Notation?
A: 8.05004749 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 805,004,749 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 | . | 0 | 5 | 0 | 0 | 4 | 7 | 4 | 9 |
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 = 8.05004749
b = 8
Now the whole thing:
8.05004749 x 108
Check your work:
108 = 100,000,000 x 8.05004749 = 805,004,749
805,004,747 | 805,004,748 | 805,004,750 | 805,004,751 |
8.05004747 x 108 | 8.05004748 x 108 | 8.0500475 x 108 | 8.05004751 x 108 |