14-9= 8+8= 30-20= 2+63=
12+7= 18-9= 40+9= 50-10=
69-6= 40+50= 14-4= 76+20=
□○□○□=□(人)
口答:男同学有( )人。
8+9= 16-7= 20+50= 18-10= 40-7+ 5=
11-5= 60-40= 8+70= 98-90= 30+(28-8)=
68-30= 10+78= 75-5= 3+56= 96-5+4=
45+8= 78-9= 29+2= ( )+6=76 54-(54-50)=
30-7= 60+19= 17+8= 54-( )=4 80+(13+7)=
17-8= 15-9= 13-5= 14-9=
12-6= 3+9= 12-3= 11-2=
59-3= 67-5= 74-4= 89-8= 97-6=
59-30= 67-50= 74-40= 89-80= 97-60=
8+11= 98-4= 48+5= 36-6=
14-5= 23+50= 54-7= 80-60=
80-3= 6+24= 64+3= 15-8=
62+48=