- =
-=
3+4=
7-3=
3+5= 4+2= 7-3= 7-5= 0+5=
4-0= 5+3= 5-4= 1+6= 6-4=
7+0= 4+4= 6-6= 8-5= 2+6=
□○□=□
0+8= 6-2= 4+5= 2+3= 9-5=
1+7= 7-3= 5+3= 8-7= 2+4=
9-6= 4+4= 7-6= 2+7= 6-0=
0+3= 5-5= 4+0= 8-8= 2-0=
4+1= 7-2= 4+4= 4-0= 0+3=
0-0= 3+3= 2+6= 9-3= 6-1=
9-6= 5-4= 4-2= 7+0= 2+3=
一共有( )只,右边有( )只。左边有几只?
8-17 9-66 4+49
2+71+7 6+34+3 9-59-4
4-2= 9-6= 4+5= 3+2=
1+3= 2+2= 8-4=