20+50=
85-40=
27+8=
20+67=
52-8=
7+31=
60-20=
90-6=
36-(16-10)=
80-10-30=
44-9-20=
10+55+8=
61-5+20=
73-(25+5)=
3+57◯57 43-6◯40
54+30◯95 34◯25+9
74-6=
13-5=
53-8=
58+7=
42+30=
25+3=
63-9=
12 - 5 =
19 - 7 =
41 - 8 =
17 + 8 =
34 + 6 =
41 + 30=
25 - 9 =
31 - 5 =
12-7= 14-6= 15-9= 18-9= 14+4=
11+8= 16-5= 17-9= 13-6= 15-5=
5+13= 15-7= 11-4= 9+4= 12-4=
10+30= 12-5= 80+6= 13-4=
14-5= 30+5= 15-7= 9+40=
8+9= 16-9= 10+0= 17-8=
18-9= 60+6= 45-5= 7+70=
58+7= 6+55= 36+20=
55+10= 49+6= 4+56=
38+5=
83+10=
40+=57
﹣6=60
+99=100
10+=30
83+683-6 58-958-6 45+2045+2
74+682-6 78-558+6 35+4055+20