Practice: Numbers

Unlike 20+, the teens (11–19) are not built from a rule — they must be memorised. Notice that 13–19 end in -tien (from "tien").

For all compound numbers from 21 to 99, put the unit first, then "en" (and), then the ten. This is the opposite of English ("twenty-three" vs "drieëntwintig").

When "twee" (2) is followed by "en", a trema (ë) is added to prevent the two e's from blending into one long vowel. This only affects numbers with twee as the unit.