Tongan number system

Tongan and Lojban have a very simple number system.

Number	Reading	Meaning
0	noa	0
1	taha	1
2	ua	2
3	tolu	3
4	fa	4
5	nima	5
6	ono	6
7	fitu	7
8	valu	8
9	hiva	9
10	hongofulu	10
	taha noa	1, 0
11	taha taha	1, 1
12	taha ua	1, 2
13	taha tolu	1, 3
14	taha fa	1, 4
15	taha nima	1, 5
16	taha ono	1, 6
17	taha fitu	1, 7
18	taha valu	1, 8
19	taha hiva	1, 9
20	ua noa	2, 0
21	ua taha	2, 1
22	ua ua	2, 2
23	ua tolu	2, 3
24	ua fa	2, 4
25	ua nima	2, 5
26	ua ono	2, 6
27	ua fitu	2, 7
28	ua valu	2, 8
29	ua hiva	2, 9
30	tolu noa	3, 0
31	tolu taha	3, 1
32	tolu ua	3, 2
33	tolu tolu	3, 3
34	tolu fa	3, 4
35	tolu nima	3, 5
36	tolu ono	3, 6
37	tolu fitu	3, 7
38	tolu valu	3, 8
39	tolu hiva	3, 9
40	fa noa	4, 0
41	fa taha	4, 1
42	fa ua	4, 2
43	fa tolu	4, 3
44	fa fa	4, 4
45	fa nima	4, 5
46	fa ono	4, 6
47	fa fitu	4, 7
48	fa valu	4, 8
49	fa hiva	4, 9
50	nima noa	5, 0
51	nima taha	5, 1
52	nima ua	5, 2
53	nima tolu	5, 3
54	nima fa	5, 4
55	nima nima	5, 5
56	nima ono	5, 6
57	nima fitu	5, 7
58	nima valu	5, 8
59	nima hiva	5, 9
60	ono noa	6, 0
61	ono taha	6, 1
62	ono ua	6, 2
63	ono tolu	6, 3
64	ono fa	6, 4
65	ono nima	6, 5
66	ono ono	6, 6
67	ono fitu	6, 7
68	ono valu	6, 8
69	ono hiva	6, 9
70	fitu noa	7, 0
71	fitu taha	7, 1
72	fitu ua	7, 2
73	fitu tolu	7, 3
74	fitu fa	7, 4
75	fitu nima	7, 5
76	fitu ono	7, 6
77	fitu fitu	7, 7
78	fitu valu	7, 8
79	fitu hiva	7, 9
80	valu noa	8, 0
81	valu taha	8, 1
82	valu ua	8, 2
83	valu tolu	8, 3
84	valu fa	8, 4
85	valu nima	8, 5
86	valu ono	8, 6
87	valu fitu	8, 7
88	valu valu	8, 8
89	valu hiva	8, 9
90	hiva noa	9, 0
91	hiva taha	9, 1
92	hiva ua	9, 2
93	hiva tolu	9, 3
94	hiva fa	9, 4
95	hiva nima	9, 5
96	hiva ono	9, 6
97	hiva fitu	9, 7
98	hiva valu	9, 8
99	hiva hiva	9, 9
100	teau	100
	taha noa noa	1, 0, 0

Note that both in Lojban and Tongan 100 has two possible realizations.