Q: How is the number 15,111,223 written in Scientific Notation?

 A: 1.5111223 x 107

Why is 15,111,223 written as 1.5111223 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 15,111,223 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: 15,111,223
  • New Number: 1.5111223

Step 2

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

New Number: 1.5111223
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 = 1.5111223

b = 7

Now the whole thing:

1.5111223 x 107

Step 4

Check your work:

107 = 10,000,000 x 1.5111223 = 15,111,223


More Scientific Notation Examples

15,111,22115,111,22215,111,22415,111,225
1.5111221 x 1071.5111222 x 1071.5111224 x 1071.5111225 x 107

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