Big numbers in English are easy, once you know how and get the hang of it. Watch the video with your teacher to learn how.
Variations:
Some people add an ‘and’ after ‘hundred’, and say ‘a’ instead of ‘one’ before ‘hundred’:

It’s your turn to say the numbers! Are you ready?
You can use the same pattern to make even bigger numbers!
quadrillion, trillion, billion, million, thousand, hundred