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 15,934,370 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: | 1 | . | 5 | 9 | 3 | 4 | 3 | 7 | 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 = 1.593437 (Please notice any zeroes on the end have been removed)
b = 7
Now the whole thing:
1.593437 x 107
Check your work:
107 = 10,000,000 x 1.593437 = 15,934,370
15,934,368 | 15,934,369 | 15,934,371 | 15,934,372 |
1.5934368 x 107 | 1.5934369 x 107 | 1.5934371 x 107 | 1.5934372 x 107 |