Q: How is the number 10,421,318 written in Scientific Notation?
A: 1.0421318 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 10,421,318 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 | . | 0 | 4 | 2 | 1 | 3 | 1 | 8 |
| 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 = 1.0421318
b = 7
Now the whole thing:
1.0421318 x 107
Check your work:
107 = 10,000,000 x 1.0421318 = 10,421,318
| 10,421,316 | 10,421,317 | 10,421,319 | 10,421,320 |
| 1.0421316 x 107 | 1.0421317 x 107 | 1.0421319 x 107 | 1.042132 x 107 |