Summarize this article:

As in English and other languages, the numbers 1 through 9 in French are unique words that you can only learn by memorizing. Luckily, they aren't too difficult, and there are some tricks you can use to help.   Un (uh) is 1. The same word is used for the French masculine article meaning "a," as in "un café" (which would mean either "a coffee" or "one coffee").  Deux (duhr) is 2. You can remember this by thinking of the word "double."  Trois (twah) is 3. Remember this by thinking how similar this word is to "triple."  Quatre (katr) is 4. Remember this by thinking about the word "quarter," which is one-fourth of something.  Cinq (sank) is 5.  Six (sees) is 6. It looks just like the English word "six," but is pronounced differently.  Sept (seht) is 7.  Huit (weet) is 8.  Neuf (nurf) is 9. To help you remember 11 through 16, think of taking the numbers 1 through 9 and adding a z sound to the end of them. For 17 through 19, you form the number word just as you do for the rest of the numbers – by saying the first digit (in the tens spot) and then the second digit (in the ones spot).   Dix (dees) is 10.  Onze (ohnz) is 11. You can remember this by thinking of the English word "ones." The number 11 is made up of two digits, both of them "ones."  Douze (dooz) is 12.  Treize (trehz) is 13.  Quatorze (kah-torz) is 14.  Quinze (kanz) is 15.  Seize (sehz) is 16.  Dix-sept (dee-seht) is 17.  Dix-huit (dees-weet) is 18.  Dix-neuf (dees-nurf) is 19. Once you get to 20, number words in French follow the same pattern that is also used in English. The only exception is 21, for which you'll add an et (and) between the words for the digits.   Vingt et un (vehnt ay uh) is 21. The literal translation would be "twenty and one." Note that you pronounce the t when it comes before a vowel sound. It is silent if it comes before a consonant.  Vingt-deux (vehn duhr) is 22.  Vingt-trois (vehn twah) is 23.  Vingt-quatre (vehn katr) is 24.  Vingt-cinq (vehn sank) is 25.  Vingt-six (vehn sees) is 26.  Vingt-sept (vehn seht) is 27.  Vingt-huit (vehn weet) is 28.  Vingt-neuf (vehn nurf) is 29.

Summary:
Memorize the numbers 1 to 9. Move on to the numbers 10 through 19. Add the numbers 1 through 9 to vingt (vehn) for numbers 21 through 29.