Q: How is the number 12,757,121 written in Scientific Notation?

 A: 1.2757121 x 107

Why is 12,757,121 written as 1.2757121 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 12,757,121 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: 12,757,121
  • New Number: 1.2757121

Step 2

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

New Number: 1.2757121
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 = 1.2757121

b = 7

Now the whole thing:

1.2757121 x 107

Step 4

Check your work:

107 = 10,000,000 x 1.2757121 = 12,757,121


More Scientific Notation Examples

12,757,11912,757,12012,757,12212,757,123
1.2757119 x 1071.275712 x 1071.2757122 x 1071.2757123 x 107

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