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 34,832,920 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: | 3 | . | 4 | 8 | 3 | 2 | 9 | 2 | 0 |
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 = 3.483292 (Please notice any zeroes on the end have been removed)
b = 7
Now the whole thing:
3.483292 x 107
Check your work:
107 = 10,000,000 x 3.483292 = 34,832,920
34,832,918 | 34,832,919 | 34,832,921 | 34,832,922 |
3.4832918 x 107 | 3.4832919 x 107 | 3.4832921 x 107 | 3.4832922 x 107 |