Q: How is the number 16,388,621 written in Scientific Notation?

 A: 1.6388621 x 107

Why is 16,388,621 written as 1.6388621 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 16,388,621 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: 16,388,621
  • New Number: 1.6388621

Step 2

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

New Number: 1.6388621
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 = 1.6388621

b = 7

Now the whole thing:

1.6388621 x 107

Step 4

Check your work:

107 = 10,000,000 x 1.6388621 = 16,388,621


More Scientific Notation Examples

16,388,61916,388,62016,388,62216,388,623
1.6388619 x 1071.638862 x 1071.6388622 x 1071.6388623 x 107

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