Naʼvi uses a base-8 number system, as opposed to the base-10 system used by most languages.

Numbers 0-39

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Base-10 Base-8 Cardinal Ordinal
0 0 kew N/A
1 1 ʼaw ʼawve
2 2 mune muve
3 3 pxey pxeyve
4 4 tsìng tsìve
5 5 mrr mrrve
6 6 pukap puve
7 7 kinä kive
8 10 vol volve
9 11 volaw volawve
10 12 vomun vomuve
11 13 vopey vopeyve
12 14 vosìng vosìve
13 15 vomrr vomrrve
14 16 vofu vofuve
15 17 vohin vohive
16 20 mevol mevolve
17 21 mevolaw mevolawve
18 22 mevomun mevomuve
19 23 mevopey mevopeyve
20 24 mevosìng mevosìve
21 25 mevomrr mevomrrve
22 26 mevofu mevofuve
23 27 mevohin mevohive
24 30 pxevol pxevolve
25 31 pxevolaw pxevolawve
26 32 pxevomun pxevomuve
27 33 pxevopey pxevopeyve
28 34 pxevosìng pxevosìve
29 35 pxevomrr pxevomrrve
30 36 pxevofu pxevofuve
31 37 pxevohin pxevohive
32 40 tsìvol tsìvolve
33 41 tsìvolaw tsìvolawve
34 42 tsìvomun tsìvomuve
35 43 tsìvopey tsìvopeyve
36 44 tsìvosìng tsìvosìve
37 45 tsìvomrr tsìvomrrve
38 46 tsìvofu tsìvofuve
39 47 tsìvohin tsìvohive

Na'vi also has ʼeyt and nayn to refer to the digits 8 and 9, but they only refer to the digits, not the cardinal or ordinal numbers.