Learning Italian numbers from 1 to 100

Similar to English, Italian uses one unique word to describe all numbers between 0 and 16. After that, each number is a composite of a word for the 'ten' (twenty, thirty, forty, etc.) and the digit following it (one, two, three). There is an exemption whenever you add '1' or '8' as a digit where you must drop the final 'i'. For example, 22 is 'ventidue', but 21 will be 'ventuno.'