16+3= | 16+30= | 32-4= | 13-7= |
15-6= | 28+2= | 71-7= | 9+60= |
50-20= | 23+30= | 67-5= | 30+40= |
87+7= | 58-50= | 30-7= | 96-60= |
9+4-3= | 22-2-6= | 52-30+8= | 4+4+4= |
63-(35+5)= | 80-(50-30)= | 70+(12-7)= | 60-30-8= |
( )个 | ( )个 | ( )个 |
2332 90角1元 5元7角7元
5355-20 71+580 47- 540+2