1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 30 40 50 60 70 80 90 100 1,000 1,000,000 1,000,000,000 one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one thirty forty fifty sixty seventy eighty ninety one hundred one thousand one million one billion 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 30th 40th 50th 60th 70th 80th 90th 100th 1,000th first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteen twentieth twenty-first thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth hundredth thousandth NEXT |