Q: How is the number 62,157,521 written in Scientific Notation?
A: 6.2157521 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 62,157,521 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: | 6 | . | 2 | 1 | 5 | 7 | 5 | 2 | 1 |
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 = 6.2157521
b = 7
Now the whole thing:
6.2157521 x 107
Check your work:
107 = 10,000,000 x 6.2157521 = 62,157,521
62,157,519 | 62,157,520 | 62,157,522 | 62,157,523 |
6.2157519 x 107 | 6.215752 x 107 | 6.2157522 x 107 | 6.2157523 x 107 |