Q: How is the number 201,661,572 written in Scientific Notation?

 A: 2.01661572 x 108

Why is 201,661,572 written as 2.01661572 x 108 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 201,661,572 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: 201,661,572
  • New Number: 2.01661572

Step 2

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

New Number: 2.01661572
Decimal Count: 12345678

There are 8 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 = 2.01661572

b = 8

Now the whole thing:

2.01661572 x 108

Step 4

Check your work:

108 = 100,000,000 x 2.01661572 = 201,661,572


More Scientific Notation Examples

201,661,570201,661,571201,661,573201,661,574
2.0166157 x 1082.01661571 x 1082.01661573 x 1082.01661574 x 108

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