Q: How is the number 131,323,420 written in Scientific Notation?

 A: 1.3132342 x 108

Why is 131,323,420 written as 1.3132342 x 108 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 131,323,420 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: 131,323,420
  • New Number: 1.31323420

Step 2

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

New Number: 1.31323420
Decimal Count: 12345678

There are 8 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 = 1.3132342 (Please notice any zeroes on the end have been removed)

b = 8

Now the whole thing:

1.3132342 x 108

Step 4

Check your work:

108 = 100,000,000 x 1.3132342 = 131,323,420


More Scientific Notation Examples

131,323,418131,323,419131,323,421131,323,422
1.31323418 x 1081.31323419 x 1081.31323421 x 1081.31323422 x 108

Explore more about the number 131,323,420:


Ask a Question