10 x 10
one hundred
30 - 10
twenty
100 - 20 - 40
forty
30 x 2
sixty
60 : 2
thirty
10 x 10 - 30
seventy
10 x 3 + 20
fifty
40 x 2
eighty
80 : 8
ten
10 x 3 + 60
ninety