6469 14-86 1元9角 56-2056-2
13-=7 8+=12
+13=43 62-=60
9辆
40辆
48辆
15-8= 30+5= 11-6= 86-80=
44-4= 52+8= 8+9= 11-2=
53-8= 52-7= 40+7= 14-9=
12-4= 79-8= 65+4= 82-3=
①16-8+6=
②29-9+30=
③37-7-7=
④54+(3+17)=
⑤48-(5+15)=
⑥76-(54-50)=
原来有多少条鱼?