Suma y Resta con Montoya (Adding and Subtracting with Montoya) is a 1993 video of Plaza Sésamo, the Mexican co-production of Sesame Street. It's Bodoque's birthday, and Montoya wants to give him a surprise party. Human friend Marcela helps with the preparations, but needs to know how old Bodoque will be. Montoya knows how many birthdays he's had but can't combine them, so Marcela teaches Montoya addition and subtraction with the aid of spoons, oranges and plates. Bodoque shows up, and Montoya has to hide the party plans from him, but they eventually have to tell him. Marcela burns the cake, but the grouchy Bodoque prefers it that way.