9-7+55
4+6-210
5+5-2= | 5+2+3= | 2+7-6= |
7+1-3= | 1+3+4= | 0+8-5= |
7-5+=8
看图算一算.
10-6+3=
49-28+18=
3+4= 9-7= 5+5= 8+2-6=
18-2= 7+5= 10-3= 9-5+4=
8+6= 15+3= 13-3= 17-14=
19-5= 8-8= 4+9= 2+9+9=
3+6= 5+5= 9-4= 10-7=
8-5= 0+6= 7-3= 9-6=
8-0= 10-1= 2+1= 4+4=
3+7= 1+5= 4-3= 6-6=
4+2+3= 10-4-6= 7-5+3= 9+0-9=
(个)