Q: How is the number 121,298,415 written in Scientific Notation?

 A: 1.21298415 x 108

Why is 121,298,415 written as 1.21298415 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 121,298,415 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: 121,298,415
  • New Number: 1.21298415

Step 2

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

New Number: 1.21298415
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 = 1.21298415

b = 8

Now the whole thing:

1.21298415 x 108

Step 4

Check your work:

108 = 100,000,000 x 1.21298415 = 121,298,415


More Scientific Notation Examples

121,298,413121,298,414121,298,416121,298,417
1.21298413 x 1081.21298414 x 1081.21298416 x 1081.21298417 x 108

Explore more about the number 121,298,415:


Ask a Question