You can build the number cardinal adjective to your choice and the order ones, the place ones.
Example: 12 - dek du, dek dua, dek due.
Using the distributive prefix (po) and the multiplicative suffix, fractional and collective (obl, on, op), you can turn the same cardinal numbers into Esperanto words.
Example: 12 - po dekdu, dekduobla, dekduoble, dekduoblo, dekduona, dekduone, dekduono, dekduopa, dekduope, dekduopo.
In order to verify that you did it correctly, enter the amount in number in the appropriate box above the screen and touch it and the cardinal adjective will appear. Please touch the different possibilities and get in the box below the result in Esperanto words.