Q: How is the number 31,312,121 written in Scientific Notation?

 A: 3.1312121 x 107

Why is 31,312,121 written as 3.1312121 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 31,312,121 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: 31,312,121
  • New Number: 3.1312121

Step 2

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

New Number: 3.1312121
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 = 3.1312121

b = 7

Now the whole thing:

3.1312121 x 107

Step 4

Check your work:

107 = 10,000,000 x 3.1312121 = 31,312,121


More Scientific Notation Examples

31,312,11931,312,12031,312,12231,312,123
3.1312119 x 1073.131212 x 1073.1312122 x 1073.1312123 x 107

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