16÷2= | 20÷5= | 45+21= | 35-16= |
46+27= | 72-35= | 5×9= | 8×6= |
28÷425÷5 45-3820÷5 32÷8×232÷(8÷2)
2×9÷64 36÷6+152×5+8 70-39-1270-(39-12)
78-6= | 81+5= | 65-5= | 87-9= | 72+5-9= |
3+80= | 77-70= | 40+30= | 14-9= | 10+7-8= |
13-5= | 90-80= | 98-8= | 13+20= | 80-20+8= |
20+80= | 12+26= | 55+20= | 21+5= | 13-9+20= |