Number-----数词、数字

zero----零
one-----一    two----二     three----三      four-----四      five---五
six ----六    seven----七    eight----八      nine-----九      ten-----十
eleven—十一  twelve---十二  thirteen---十三   fourteen---十四  fifteen---十五
sixteen---十六  seventeen---十七  eighteen---十八   nineteen----十九  
twenty二十      thirty---三十       forty----四十       fifty------五十     
sixty---六十      seventy----七十     eighty----八十      ninety----九十 
hundred----百     thousand-----千     million-------百万     billion-----十亿

twenty-one-----21     forty-three ----- 43     fifty-five------55      ninety-eight -----98
one hundred and two-----102       one hundred and ninety–nine ------199 
one thousand--------1,000(一千)             ten thousand------10,000(一万)
one hundred thousand------100,000（十万）  one million----1,000,000(一百万)
ten million----10,000,000(一千万)
one hundred million------100，000，000（一亿）
one billion--------1,000,000,000(十亿)

123,456,789-----one hundred and twenty-three million , four hundred and fifty-six thousand , seven hundred and eighty-nine 
987,654,321------nine hundred and eight-seven million , six hundred and fifty-four thousand , three hundred and twenty-one