Los números 31-100
 To make any number between 31 and 99, you simply
need to know the base of ten and the single digits.
 The formula is: base of ten y single digit.
 There are no accent marks on numbers 31-100.
 Notice that the bases of ten have similar roots
(highlighted in green) as the single digits. Being
aware of this connection will help you remember the
bases of ten.
30 – thirty
treinta
31- 39 – thirty-one – thirty-nine
treinta y _____
40 – forty
cuarenta
41-49 – forty-one – forty-nine
cuarenta y _____
50 – fifty
cincuenta
51 - 59 – fifty-one – fifty-nine
cincuenta y ____
60 – sixty
sesenta
61 - 69 – sixty-one – sixty-nine
sesenta y ___
70 – seventy
setenta
71 - 79 – seventy-one – seventy-nine
setenta y ___
80 – eighty
ochenta
81 - 89 – eighty-one – eighty-nine
ochenta y ___
90 – ninety
noventa
91-99 – ninety-one – ninety-nine
noventa y ___
100 – one hundred
cien
< 100 – greater than 100
ciento ___
Examples:
58: cincuenta y ocho
95: noventa y cinco
49: cuarenta y nueve