The document explains how to correctly construct two-digit numbers in Spanish, emphasizing the use of 'y' to represent 'and' when combining tens and units. It also highlights exceptions for numbers 16-19 and in the 20s, and the proper way to express numbers over 100. Additionally, it addresses the importance of using correct numerical phrasing to avoid confusion, especially in financial contexts.

1. Los números 0-100
====The fast track ahead

2. 2-digit numbers
» The hispanic world is based on the
metric system: base of 10.
» Use the tens place to start.
» “Add”, using the word “y”, which
means and.
» Attach any number left over. This
should be a 1-digit number.

3. Let’s look at 39.
» Base number: 30 treinta
» Add: y y
» Remaining number: 9 nueve
» The final answer: treinta y nueve

4. Let’s look at 72.
» Base number: 70 setenta
» Add: y y
» Remaining number: 2 dos
» The final answer: setenta y dos

5. Exceptions: 16-19 & 20s
» These numbers can be written as
three words or one.
» Look at these examples:
» 16: diez y seis OR dieciseis
» 18: diez y ocho OR dieciocho
» 22: veinte y dos OR veintidos
» 28: veinte y siete OR veintisiete

6. 100: cien or ciento?
» Is the number only 100; nothing
else? Use cien.
» Is the number higher than 100?
Use ciento.
» Examples:
» 107 - ciento siete
» 100 - cien
» 124 - ciento veinticuatro

7. decimals
» Fractions are expressed with “y”.
» Any number over 100 should not
be using the y other than the 2-
digit numbers.
» English speakers use “and”
incorrectly, thus confusing another
language.

8. Decimals (cont)
» Poor English: one-hundred and
fifty-two.
» Proper English: one-hundred fifty-
two.
» Poor Spanish: ciento y cincuenta y
dos = 100.52
» Proper Spanish: ciento cincuenta y
dos = 152

9. Does this matter?
» It’s only a little letter you ask!
100.52 vs 152
What if it’s your bank account?
What if it’s your new BB shoes?
What if it’s your refund?
What if it’s how many days you have
to wait for your license?

10. Does this matter?
» It’s only a little letter you ask!
100.52 vs 152
What if it’s your bank account?
What if it’s your new BB shoes?
What if it’s your refund?
What if it’s how many days you have
to wait for your license?