Q: How is the number 45,320,342 written in Scientific Notation?
A: 4.5320342 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 45,320,342 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: | 4 | . | 5 | 3 | 2 | 0 | 3 | 4 | 2 |
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 = 4.5320342
b = 7
Now the whole thing:
4.5320342 x 107
Check your work:
107 = 10,000,000 x 4.5320342 = 45,320,342
45,320,340 | 45,320,341 | 45,320,343 | 45,320,344 |
4.532034 x 107 | 4.5320341 x 107 | 4.5320343 x 107 | 4.5320344 x 107 |