twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
one hundred
This spelling is not too difficult if you remember numbers from 2 to 9.
2 two 20 twenty
3 three 30 thirty
4 four 40 forty
5 five 50 fifty
6 six 60 sixty
7 seven 70 seventy
8 eight 80 eighty
9 nine 90 ninety
