The numbers from 1-40 in Spanish are:
uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve, diez, once, doce, trece, catorce, quince, dieciséis, diecisiete, dieciocho, diecinueve, veinte, veintiuno, veintidós, veintitrés, veinticuatro, veinticinco, veintiséis, veintisiete, veintiocho, veintinueve, treinta, treinta y uno, treinta y dos, treinta y tres, treinta y cuatro, treinta y cinco, treinta y seis, treinta y siete, treinta y ocho, treinta y nueve, cuarenta.
cero
A three is tres and zero is cero. The phrase is un tres y dos ceros.But the number 300 is trescientos.
Four point zero zero four five one
You spell the number 12 in spanish "doce." You should always spell this number in word form if you plan to use it at the beginning of a sentence, such as "Doce minutos?"
Cuarenta
It is "Doscientos"
The numeral "0" (none, nothing) is spelled zero. The Spanish spelling is cero.
Ciento dos
The number eleven is spelled 'once' (awn-say) in Spanish.
The number 5200 is cinco mil doscientos.
Treinta y cinco
The number fifteen (15) is quince.quince