54-9□ 42+8□ 74-40□
59-4□ 42+6□ 36+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=
12 - 5 =
19 - 7 =
41 - 8 =
17 + 8 =
34 + 6 =
41 + 30=
25 - 9 =
31 - 5 =
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