①63.4+18.2= ②40.8﹣8.4= ★③36×22=④89×57= ⑤315÷3= ★⑥566÷8=
冰箱里有15罐饮料,喝掉了7罐,冰箱里还剩下几罐饮料?
8-2= 8-5= 18-6= 12-1= 7-5= 12-2=
17-5= 17-3= 17-2= 17-1= 17-6= 17-4=
16-1= 16-3= 16-5= 16-4= 16-0= 16-2=
17-2= 17-4= 18-6= 12-1= 7-5= 12-2=