Q: How is the number 489,674 written in Scientific Notation?

 A: 4.89674 x 105

Why is 489,674 written as 4.89674 x 105 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 489,674 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: 489,674
  • New Number: 4.89674

Step 2

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

New Number: 4.89674
Decimal Count: 12345

There are 5 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 = 4.89674

b = 5

Now the whole thing:

4.89674 x 105

Step 4

Check your work:

105 = 100,000 x 4.89674 = 489,674


More Scientific Notation Examples

489,672489,673489,675489,676
4.89672 x 1054.89673 x 1054.89675 x 1054.89676 x 105

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