Q: How is the number 72,131,634 written in Scientific Notation?

 A: 7.2131634 x 107

Why is 72,131,634 written as 7.2131634 x 107 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 72,131,634 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: 72,131,634
  • New Number: 7.2131634

Step 2

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

New Number: 7.2131634
Decimal Count: 1234567

There are 7 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 = 7.2131634

b = 7

Now the whole thing:

7.2131634 x 107

Step 4

Check your work:

107 = 10,000,000 x 7.2131634 = 72,131,634


More Scientific Notation Examples

72,131,63272,131,63372,131,63572,131,636
7.2131632 x 1077.2131633 x 1077.2131635 x 1077.2131636 x 107

Explore more about the number 72,131,634:


Ask a Question