34+=50
+24=64
-8=42
□□□□□□□□□□□□□□□□□□
□○□=□(个)
60-33= 50-20= 84-4= 27-10=
32+40= 60+10= 30+6= 25+12=
23+35= 56+34= 70-36= 95-48=
68-49= 24+68= 51-14= 77-15=
45+35= 65-46= 27+19= 54-27=