Comparison

94. (1) with -ari, -astr: rīkr (powerful), rīkari, rīkastr; gǫfugr (distinguished), gǫfgari, gǫfgastr.

95. (2) with -ri, -str and mutation: langr (long), lęngri, lęngstr; stōrr (big), stœrri, stœrstr; ungr (young), yngri, yngstr.

96. The following are irregular:

gamall (old)ęllrięlztr
gōðr (good)bętribęztr
illr (bad)vęrrivęrstr
lītill (little)minniminstr
margr (many)fleiriflestr
mikill (great)meirimestr

Numerals

97.

CardinalOrdinal
1.einn (one)fyrstr (first)
2.tveirannarr
3.þrīrþriði
4.fjōrirfjōrði
5.fimmfimmti
6.sexsētti
7.sjausjaundi
8.āttaātti
9.nīunīundi
10.tīutīundi
11.ellifuellifti
12.tōlftōlfti
13.þrettānþrettāndi
14.fjōrtān
15.fimmtān
16.sextān
17.sjautān
18.ātjān
19.nītjān
20.tuttugu
21.einn ok tuttugu, etc.
30.þrīr tigir, etc.
100.tīu tigir
110.ellifu tigir
120.hundrað
1200.þūsund

einn is declined like other adjectives:--

98.