Q: How is the number 41,781,389 written in Scientific Notation?

 A: 4.1781389 x 107

Why is 41,781,389 written as 4.1781389 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 41,781,389 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: 41,781,389
  • New Number: 4.1781389

Step 2

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

New Number: 4.1781389
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 = 4.1781389

b = 7

Now the whole thing:

4.1781389 x 107

Step 4

Check your work:

107 = 10,000,000 x 4.1781389 = 41,781,389


More Scientific Notation Examples

41,781,38741,781,38841,781,39041,781,391
4.1781387 x 1074.1781388 x 1074.178139 x 1074.1781391 x 107

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