Aula 12 - Mathmatic; Indefinite articles

1. Mathmatic

We usually say basic math operations like this:

+ plus  
- minus
x times
/ divided by

2 + 2 = 4 -- two plus two equals four
4 - 4 = 0 -- four minus four equals zero
6 x 2 = 12 -- six times two equals twelve
20 / 10 = 2 -- twenty divided by ten equals two


2. Indefinite articles

We use a or an to indicate a thing that we don't know.

a - used for consoants sound 
Ex: a car - um carro
       a favor - um favor

an - used for vowel sound
Ex: an elephant - um elefante
       an yard - um jardim (yard starts with ''y'', but the sound is ''i'')