Numbers in Arabic are like solving mathematical puzzles. If you like logical games, this is perfect for you. If you hate mathematics, there is good news: In the end it just comes down to two major steps.
In Arabic there is the grammatical subject and the so-called "logical subject", which is used in connection with quantifiers.
Arabic knows two plural forms depending on the number of things: plural for small numbers (jama' al-qilla) and big numbers (jam' al-kathra)
In Arabic there is a special masdar form to express the amount of times an action is done: the ism al-marra اِسْم الْمَرّة
You may have noticed that the Arabic word for ten عشر doesn't always get the same vowels. Therefore, it is pronounced differently.