Q: How is the number 64,648,211 written in Scientific Notation?
A: 6.4648211 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 64,648,211 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 | . | 4 | 6 | 4 | 8 | 2 | 1 | 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 = 6.4648211
b = 7
Now the whole thing:
6.4648211 x 107
Check your work:
107 = 10,000,000 x 6.4648211 = 64,648,211
64,648,209 | 64,648,210 | 64,648,212 | 64,648,213 |
6.4648209 x 107 | 6.464821 x 107 | 6.4648212 x 107 | 6.4648213 x 107 |