Q: How is the number 11,515,321 written in Scientific Notation?

 A: 1.1515321 x 107

Why is 11,515,321 written as 1.1515321 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 11,515,321 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: 11,515,321
  • New Number: 1.1515321

Step 2

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

New Number: 1.1515321
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 = 1.1515321

b = 7

Now the whole thing:

1.1515321 x 107

Step 4

Check your work:

107 = 10,000,000 x 1.1515321 = 11,515,321


More Scientific Notation Examples

11,515,31911,515,32011,515,32211,515,323
1.1515319 x 1071.151532 x 1071.1515322 x 1071.1515323 x 107

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