Q: How is the number 727,845 written in Scientific Notation?

 A: 7.27845 x 105

Why is 727,845 written as 7.27845 x 105 in scientific notation?

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 727,845 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

  • Original Number: 727,845
  • New Number: 7.27845

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 7.27845
Decimal Count: 12345

There are 5 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 7.27845

b = 5

Now the whole thing:

7.27845 x 105

Step 4

Check your work:

105 = 100,000 x 7.27845 = 727,845


More Scientific Notation Examples

727,843727,844727,846727,847
7.27843 x 1057.27844 x 1057.27846 x 1057.27847 x 105

Explore more about the number 727,845:


Ask a Question