Q: How is the number 712,125,212 written in Scientific Notation?
A: 7.12125212 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 712,125,212 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 | . | 1 | 2 | 1 | 2 | 5 | 2 | 1 | 2 |
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 = 7.12125212
b = 8
Now the whole thing:
7.12125212 x 108
Check your work:
108 = 100,000,000 x 7.12125212 = 712,125,212
712,125,210 | 712,125,211 | 712,125,213 | 712,125,214 |
7.1212521 x 108 | 7.12125211 x 108 | 7.12125213 x 108 | 7.12125214 x 108 |