Counting from 0 to 100

0- null
1- en/et
2- to
3- tre
4- fire
5- fem
6- seks
7- syv
8- åtte
9- ni
10-ti
11- elleve (you say ellve)
12- tolv
13- tretten
14- fjorten
15- femten
16- seksten (pronounced "seisten")
17- sytten (pronounced "søtten")
18- atten
19- nitten
20- tjue
21- tjue en
22- tjue to

From now on you just keep on say "tjue" + add number from 1-9 behind.
The same with the rest of the number below. Just add a number from 1-9 behind what's in front.

30- tretti
40- førti
50- femti
60- seksti
70- sytti (pronounced søtti)
80- åtti
90- nitti
100- hundre

Just ask if you need to know another number