Scientific notation is a way of expressing numbers that are too big or too small to be conveniently written in decimal form. 
Source: Wikipedia.

![](https://steemitimages.com/DQmRFCgzWve2Q9sq3yW1uUbBaYYutE3QHhAmcdCmwFFEkjU/image.png)

Let us learn how to change a standard number into a scientific number.

Example: 72093

Step 1 :
Insert a decimal comma/point in front of the first digit. 

![](https://steemitimages.com/DQmX7tQWAmQLVvJ9PNzNSB4dT9pUyaten81eFzYHcofWpCS/image.png)

Important to remember:

![](https://steemitimages.com/DQmRPaNBnAAkWKipzmxMrh9CwzS6hWNG6hDToEtxhdrqcBj/image.png)

Step 2 :

Multiply this number by 10.

![](https://steemitimages.com/DQmNyjFqLWagsWmhkPD7wGZTowhf37GNjT14xAov7C85VmU/image.png)

Step 3 :

Count the number of places from the decimal comma/point to the end of the number

![](https://steemitimages.com/DQmejLNr5ujSUzW7orPoPiXfkJZNYYvGQyMmk3nTBjCruDg/image.png)

There are 4 places from the decimal comma/point to the end of the number.

Step 4 :

The amount of places moved will be your power.

![](https://steemitimages.com/DQmRHm4w88S5fTtQCU9S1w42wQAnzrHrqs5S87gcTr19HMN/image.png)

It is now true to say that 

![](https://steemitimages.com/DQmS8t3pbgaPkWnwfc6tyUwgGBWGS9Usadz6hhHMoJmGT1f/image.png)

![](https://steemitimages.com/DQmWJqKuz1YkZ7x7Lc5LMczb1yWJJf7CG9ZgZoy2762w1rz/image.png)

Emoji picture source:
media.licdn.com