43+952 54-2044 48-840+5
73-671 26+4056 28+828-8
83+683-6 58-958-6 45+2045+2
74+682-6 78-558+6 35+4055+20
38+5=
83+10=
40+=57
﹣6=60
+99=100
10+=30
3+57◯57 43-6◯40
54+30◯95 34◯25+9
74-6=
13-5=
53-8=
27+8=
58+7=
42+30=
25+3=
63-9=