446-6 82-22+80 13+415
60+556 3033-3 69-950+9
11-3=
25-5=
14-6+4=
53-3=
8+70=
13-9+10=
66-60=
19-7=
73-70+14=
( )<( )
答:①能 ②不能 (圈一圈)
12-10=
12+6=
16-6-3=
15-9=
12-6=
11-9=
5+10-6=
11-3+3=
30+6=
37-7=
5+30-5=
13-3-3=