What does "twenty" mean in English for Spanish?

In English for Spanish, "twenty" means:

20

Listen to "twenty": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a word that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 3, Scene 3
• English for Spanish 3, Level 3, Scene 4
• English for Spanish 3, Level 3, Scene 5
• English for Spanish 4, Level 3, Scene 3