Q: How is the number 31,265,866 written in Scientific Notation?

 A: 3.1265866 x 107

Why is 31,265,866 written as 3.1265866 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 31,265,866 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: 31,265,866
  • New Number: 3.1265866

Step 2

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

New Number: 3.1265866
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 = 3.1265866

b = 7

Now the whole thing:

3.1265866 x 107

Step 4

Check your work:

107 = 10,000,000 x 3.1265866 = 31,265,866


More Scientific Notation Examples

31,265,86431,265,86531,265,86731,265,868
3.1265864 x 1073.1265865 x 1073.1265867 x 1073.1265868 x 107

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