Q: How is the number 149,769,746 written in Scientific Notation?
A: 1.49769746 x 108
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 149,769,746 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 | . | 4 | 9 | 7 | 6 | 9 | 7 | 4 | 6 |
Decimal Count: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
There are 8 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 = 1.49769746
b = 8
Now the whole thing:
1.49769746 x 108
Check your work:
108 = 100,000,000 x 1.49769746 = 149,769,746
149,769,744 | 149,769,745 | 149,769,747 | 149,769,748 |
1.49769744 x 108 | 1.49769745 x 108 | 1.49769747 x 108 | 1.49769748 x 108 |