14-6= 11-8= 7+5= 17-7+2=
8+9= 12-3= 15-9= 11-3-3=
19-8= 70+8= 78-8= 13-(6+3)=
50+40= 90-50= 54+4= 7+(14-9)=
35+50= 38-20= 59-5= 30+40-20 =
6+54= 85-9= 37-20+40= 39-(9-5)=
13-7= 18-8= 9+7= 14-6= 3+80=
11-3= 15-7= 14-5= 11-7= 45-5=
13-4= 4+8= 8+9= 18-9= 78-70=
5+4+7= 11-6+7= 17-8-3= 8+7-9= 12-4+5=
①1.25×(30.1﹣24.91÷4.7)
②[ ﹣( ﹣ )]÷
③15.6×13.1﹣15.6﹣15.6×2.1
④2 ×23.4+11.1×57.6+6.54×28
⑤1234+2341+3412+4123
⑥ + + + + +