Unit1 0 zero Unit1 1 one ~ 9 nine Unit2 10 ten Unit2 11 eleven ~ 19 nineteen Unit3 20 twenty Unit3 21 twenty-one ~ 29 twenty-nine Unit4 30 thirty Unit4 31 thirty-one ~ 39 thirty-nine Unit5 40 forty Unit5 41 forty-one ~ 49 forty-nine Unit6 50 fifty Unit6 51 fifty-one ~ 59fifty-nine Unit7 60 sixty Unit7 61 sixty-one ~ 69 sixty-nine Unit8 70 seventy Unit8 71 seventy-one ~ 79 seventy-nine Unit9 80 eighty Unit9 81 eighty-one ~ 89 eighty-nine Unit10 90 ninety Unit10 91 ninety-one ~ 99 ninety-nine Unit10 100 one hundred