Los numeros 30-100

Treinta 30
Cuarenta 40
Cincuenta 50
Sesenta 60
Setenta 70
Ochenta80
Noventa 90
Cien 100

Remember
1) to do the numbers in between, just add "y" to 30-90 and then 1-9
Example: 31 = treinta y uno, 99 = noventa y nueve (the a-y combo sounds like the English "I")
2) to do numbers 101-199, change "cien" to "ciento" and add the number
Example: 101 = ciento uno, 185 = ciento ochenta y cinco