41+7= | 18﹣9= | 50+35= | 63﹣7= |
81﹣40= | 46﹣7= | 65+20= | 82﹣20= |
17+5= | 36﹣8= | 5+34= | 30+44= |
75﹣20= | 90﹣9= | 82+9= | 40﹣4= |
74﹣6= | 25﹣8= | 26+7= | 57﹣50= |
27﹣9= | 38+8= | 31﹣7+8= | 43﹣3﹣10= |
83﹣(36﹣30)= | 20+(50﹣20)= |