Q: How is the number 18,269,136 written in Scientific Notation?
A: 1.8269136 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 18,269,136 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 | . | 8 | 2 | 6 | 9 | 1 | 3 | 6 |
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 = 1.8269136
b = 7
Now the whole thing:
1.8269136 x 107
Check your work:
107 = 10,000,000 x 1.8269136 = 18,269,136
18,269,134 | 18,269,135 | 18,269,137 | 18,269,138 |
1.8269134 x 107 | 1.8269135 x 107 | 1.8269137 x 107 | 1.8269138 x 107 |