Some tricks for learning how to count to 100 in Spanish include coming up with mnemonics, using music, listening to accompanying audio and finding a pattern. Learn-Spanish-Help.com, DonQuijote.org and EzineArticles.com are some useful resources for learning to count in Spanish.
Remembering an unfamiliar Spanish word can be easier when an image is related to it, advises EzineArticles.com. For example, the Spanish word for 1, uno, can be visualized as Uma Thurman sitting in class with one of her fingers extended. This provides a guide for both the pronunciation and the meaning. The Spanish word for two, dos, can be pictured as two explosions on the floor.
For more aurally inclined learners, it may help to use music or songs to associate to numbers rather than images. One of Ricky Martin's songs starts out with "uno, dos, tres, cuatro, cinco, cinco, seis," points out Learn-Spanish-Help.com. Learning this part of the song means already being able to count more than halfway to 10.
For more traditional methods, DonQuijote.org has published a list of the Spanish numbers that play an audio clip of a Spanish speaker pronouncing them when clicked. All the numbers from 1 to 30, and then some numbers after that, are included in the list. Once the numbers from 1 to 30 have been mastered, the numbers between 30 and 100 are recreated by using the same pattern.