You use this to say how many of something there is
Example
One apple
two dollars
Rule to follow: Cardinal numbers (hoofdtelwoorden) are about the quantity (hoeveelheid)
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11 (eleven) until 19 (nineteen) are irregular (they don't make sense), so learn them by heart! (leer het uit je hoofd)
20- twenty 70- seventy
30- thirty 80- eighty
40- forty 90- ninety
50- fifty 100- hundred
60- sixty
1. Begin with the first number--> thirty
2. add a dash (streepje) --> thirty -
3. Add the second number --> thirty - four