Along with knowing the basic numbers, there are also numbers for sequences.  These are called ordinal numbers, meaning that they give an order to things.  Have a look at the list below, and look carefully.  There actually is a sort of order to these things, and it has to do with the ending of the word.

Except for the words “eerste” and “achtste”, the ordinal numbers from one to nineteen all take the basic number and add either an “-e” if the word already ended in “d” or add “-de”.  For the ordinal numbers starting with twenty, just add “-ste” to the end of the number.  If you need a refresher on the basic Dutch numbers 1-100, you can check those out here.

first : eerste
second : tweede
third : derde
fourth : vierde
fifth : vijfde
sixth : zesde
seventh : zevende
eighth : achtste
ninth : negende
tenth : tiende
eleventh : elfde
twelfth : twaalfde
thirteenth : dertiende
fourteenth : veertiende
fifteenth : vijftiende
sixteenth : zestiende
seventeenth : zeventiende
eighteenth : achttiende
nineteenth : negentiende
twentieth : twintigste
twenty-first : eenentwintigste
twenty-second : tweeëntwintigste
thirtieth : dertigste
fourtieth : veertigste
fiftieth : vijftigste
sixtieth : zestigste
zeventieth : zeventigste
eightieth : tachtigste
ninetieth : negentigste
hundredth : honderdste
thousandth : duizendste
millionth : miljoenste