Q: How is the number 89,409 written in Scientific Notation?

 A: 8.9409 x 104

Why is 89,409 written as 8.9409 x 104 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 89,409 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: 89,409
  • New Number: 8.9409

Step 2

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

New Number: 8.9409
Decimal Count: 1234

There are 4 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 = 8.9409

b = 4

Now the whole thing:

8.9409 x 104

Step 4

Check your work:

104 = 10,000 x 8.9409 = 89,409


More Scientific Notation Examples

89,40789,40889,41089,411
8.9407 x 1048.9408 x 1048.941 x 1048.9411 x 104

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