Q: How is the number 425 written in Scientific Notation?

Why is 425 written as 4.25 x 10² 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 10^b

Follow the steps below to see how 425 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: 425
• New Number: 4.25

Step 2

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

New Number:	4	.	2	5
Decimal Count:			1	2

There are 2 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 10^b

a = 4.25

b = 2

Now the whole thing:

4.25 x 10²

Step 4

Check your work:

10² = 100 x 4.25 = 425

More Scientific Notation Examples