Q: How is the number 205,402,211 written in Scientific Notation?

 A: 2.05402211 x 108

Why is 205,402,211 written as 2.05402211 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 205,402,211 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: 205,402,211
  • New Number: 2.05402211

Step 2

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

New Number: 2.05402211
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 = 2.05402211

b = 8

Now the whole thing:

2.05402211 x 108

Step 4

Check your work:

108 = 100,000,000 x 2.05402211 = 205,402,211


More Scientific Notation Examples

205,402,209205,402,210205,402,212205,402,213
2.05402209 x 1082.0540221 x 1082.05402212 x 1082.05402213 x 108

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