Does one billion is equal to 100 million?

Answer 1

It equals 1000 million.

Warning. A billion is 1000 million in the USA, but not everywhere. In many English-speaking countries a billion is a million million. In everyday matters in the US you can use billion without worrying, but if your words might be going international it would probably be worth while to learn the other ways of doing it. Here's how : -

American............ British............ Exponential ............Scientific

English............... English........... notation .................notation

thousand ..........thousand ............103 .........................Kilo

million ..................million ...............106 ........................Mega

billion ............thousand million ......109 ........................Giga

trillion ..................billion ................1012 .......................Tera