Q: How is the number 421,263 written in Scientific Notation?

 A: 4.21263 x 105

Why is 421,263 written as 4.21263 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 421,263 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: 421,263
  • New Number: 4.21263

Step 2

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

New Number: 4.21263
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 = 4.21263

b = 5

Now the whole thing:

4.21263 x 105

Step 4

Check your work:

105 = 100,000 x 4.21263 = 421,263


More Scientific Notation Examples

421,261421,262421,264421,265
4.21261 x 1054.21262 x 1054.21264 x 1054.21265 x 105

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