14-6=
32-2=
47+9
> < =
55-3865-48 45-2445-20 92-383-4
54-854+6 62-4920+26 81-872-3
12-=8 15-=9 13-=9 11-=7
60+=68 29-=20 -7=6 -5=8
20+50= 40-40= 75-5= 58-50= 12-9=
83-3= 60+5= 1+29= 15-8= 23+40=
75+20= 13-7= 74+3= 2+87= 71-10=
+50<55 68->60
7997 95-4045+6 2元18角
10089 34+737+4 9角9分1元
40+8= 70+6= 60+8= 13-6= 58-8=
17-9= 12-5= 35-5= 15-7= 13-6=
17-6+6= 22-2+3= 13-0+0= 5+6-8= 44-4=
78-7087 50+545 80+284-2
12+5= 8-6= 11+7=
17-5= 18-6= 18-7=