hard crossward puzzle for spanish class please help???

Question

i dont get this and its due tomarrow if you dont no all of them thats fine any ones will help, the 1 with the most will get ten points and i no you probly care about points cuz no 1 is up at 3 am cuz there borred. thanks a ton

(across)
4.country in central america just north of costa rica(9 spaces)
6.country in south america between chile and uruguay(9spaces)
10.veinticinco - ocho=(10 spaces)
11.Spanish boys name, Nacho for short(7spaces)
i have 12
i have 13

(Down)
i have 1
i have 2
3.veintiseis - ocho=(6 spaces)
4.doce - tres (5 spaces)
i have 5
i have 7
8.veintidos + ocho=(7 spaces)
i have 9

Answer 1

A.
4. NICARAGUA
6. ARGENTINA
10. 25-8=17= DIECISIETE
11. IGNACIO

D.
2. 26-8=18= DIECIOCHO
4. 12-3=9= NUEVE
8. 22+8=30= TREINTA