Q: How is the number 10,100,221 written in Scientific Notation?

 A: 1.0100221 x 107

Why is 10,100,221 written as 1.0100221 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 10,100,221 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: 10,100,221
  • New Number: 1.0100221

Step 2

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

New Number: 1.0100221
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 = 1.0100221

b = 7

Now the whole thing:

1.0100221 x 107

Step 4

Check your work:

107 = 10,000,000 x 1.0100221 = 10,100,221


More Scientific Notation Examples

10,100,21910,100,22010,100,22210,100,223
1.0100219 x 1071.010022 x 1071.0100222 x 1071.0100223 x 107

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