At last! I looove the thought that goes into numbers in conlangs!
Anyway, here are some of mine...

(Note: forms are given cardinal-ordinal-other notes)
Folkish Numbers (Folkisch Tahlen):
Nylle
Ein-Ferst-en [1-first-a(n)]
Twa-Anther
Threi-Thrieth
Fjoer-Fjoerth
Fimf-Fimfeth
Sichs-Sichseth
Sebben-Sebbenth
Achtu-Achtuth
Nyn-Nynth
Tehn-Tehnth
...

1- Şiys Shais (v-a(n) saħ-first)
2- Dvx Duth
3- Ţrēĕk Tsre’k
4- Kaţr Keitsr
5- Şgrāx Shgraath
6- Siyģ Saij
7- Caw *lateral click*eiv
8- Eħ eekh
9- Neħ Neekh
10- Nań Neiny

For clarification, the Kh- sound is a voiceless velar fricative, pronounced like an h but lower in the thorat. The ' indicates a glottal stop and the 'ny' indicates a palatalized n. I will provide more clarification if needed.

Here's 0-10 in my conlang Chiáng-gok:

0. düg
1. ik
2. dï
3. si
4. lā
5. ník
6. chà
7. fe
8. nö
9. gam
10. jŭ

1- pem (n and m are nasal are are pronunced the same exact way)
2- wachi
3- taman
4- feka
5- homu
6- fomu
7- womu
8- tamu
9- femu
10- hoho

This numbers basically use the Japanese pronunciation. The letter sounds that are not in japanese use the vowel sounds.

Numbers 1-10 in Gurcaj:

1: og 2: ne 3: san 4: fi 5: gu 6: ryu 7: evt 8: pa 9: kau 10: tcun

The pronunciations are:

ox, nɛ, θan, fɪ, xʊ, ɾyŭ, ɛwt, pa, kaǔ, th̪͆ʊn

Numbers 1 - 10 For Oealu

1 Ykasa
2 Kasa
3 Koluma
4 Neļa
5 Veisa
6 Kuoƶa
7 Seisama
8 Kedeksa
9 Ydeksa
10 Poia

Here is part of the incomplete number system for Tikolmian. It's base three. I don't remember all of it, but here it is anyway.

1 - iso
2 - meci
3 - zekō
4 - zekō iso
5 - zekō meci

I forget what any of the numbers after five are, so they're not here. I'm not sure what the number system for Fooblian is. I think the Sylvanian number system is base ten, but I don't have the numbers for it yet. If I figure them out I will post them here.

From a conlang in progress, Experimental Conlang A:

The number system is vigesimal.
Ordinals are irregular for one and two and constructed with [-ki] for higher numbers.

one [haw]
two [pen]
three [kæp]
four [ko]
five [tʃaŋa]
six [name]
seven [pılt]
eight [jenn]
nine [lafa]
ten [mol]
eleven [molhaw]
twenty [lad]
thirty [ladmol]
forty [penilad]
fifty [peniladmol]
sixty [kæplad]
seventy [kæpladmol]
eighty [jenilad]
ninety [jeniladmol]
hundred [θio]
thousand [fima]

first [paj]
second [hobεn]
third [kæpki]
fourth [koki]
etc.

Numbers in Kamalian follow a base-25 system:

1-ŋup
2-sat
3-kip
4-nal
5-huk
6-mip
7-gup
8-qik
9-siq 
10-nux
11-hip
12-saq
13-ŋas
14-tuŋ
15-mup
16-lap
17-mis
18-sas
19-gut
20-kag
21-qun
22-sap
23-xal
24-qul
25-pax

26-paxŋup
27-paxsat
32-paxgup
50-satpax
54-satpaxnal
75-kippax
76-kippaxŋup
625-hun
1250-sathun /sat.hun/

The number system in my conlang ceorzani is rather peculiar, it has 9 numerical glyphs and in numbers that are greater than 10, the numbers in it are actually pronounced one at a time. For example the number 100 is literally read as one-zero-zero. I don't remember the how the numbers were called in my language right now, but i remember that I submitted them to another member via PM.