Numbers 21-60

Firstly we will all start with numbers ending with zeroes(which makes it easier)

trente
quarante
cinquatre
soixante

Easy right? Now we focus on the units. Firstly there is a difference to numbers that end with 1 and the others.

The rest of the digits are easy. Just add the name of the digit to the tens unit

This repeats until 60.

Au revoir