LEARN NUMBERS

1. http://www.numbernut.com/basic/number_bigger.shtml
2. 1 - One
   10 - Ten
   100 - One hundred
   1,000 - One thousand
   10,000 - Ten thousand
   100,000 - One hundred thousand
   1,000,000 - One million
   10,000,000 - Ten million
   100,000,000 - One hundred million
   1,000,000,000 - One billion
3.  https://en.wikipedia.org/wiki/Power_of_10
4. https://en.wikipedia.org/wiki/Power_of_10