I do not know what to eat , so they write contemprary vietnam is few all lass 1 :
1. The provincial :
3+7=............? 10-9=.................? 1+.....=3
4+6=............? 9-8=.................? 7+.....=7
5+5=............? 8-7=.................? 9+.....=10
2+8=............? 7-6=.................? 5-......=2
1+9=............? 6-5=.................? 6-......=3
0+10=...........? 5-4=.................? 4-......=2
