15-9= |
66+9= |
65-20= |
36+8= |
50+7+30= |
78-60= |
56-8= |
50+25= |
63+7= |
35-5-5= |
87-50= |
40+16= |
78-20= |
68+6= |
52-(28-8)= |
66-7= |
67-30= |
30+55= |
23+60= |
90-50+46= |