Um -> 1, dois -> 2, três -> 3, quatro -> 4, cinco -> 5,
seis -> 6, sete -> 7, oito -> 8, nove -> 9, dez -> 10.
Onze -> 11, doze -> 12, treze -> 13, quatorze -> 14, quinze -> 15,
dezesseis -> 16, dezessete -> 17, dezoito -> 18, dezenove -> 19,
vinte -> 20, viente e um -> 21.
Trinta -> 30, quarenta -> 40, cinquenta -> 50, sessenta -> 60,
setenta -> 70, oitenta -> 80, noventa -> 90, cem -> 100, mil -> 1000.
序数詞は女性形や複数形がありますが、ここでは男性単数形のみ。
Primeiro => 1st, segundo => 2nd, terceiro => 3rd, quarto => 4th,
quinto => 5th, sexto => 6th, sétimo => 7th, oitavo => 8th,
nono => 9th, décimo => 10th.






