列竖式计算，并用乘法验算．42.7÷7=38.4÷6=62.8÷4=65.6÷8=．
直接写出得数．12×= ÷= 0÷= ﹣= 12×（×）=×= ÷= 20÷= += ×90×=
直接写出得数：×12= 1÷= ×= += ÷2=6﹣= 0÷= ×= ÷= ﹣=
表示 ；表示 ．
直接写出得数．÷= ×3= 6×= +×7=100÷10%= ÷1= ÷7= ×9×=
直接写得数= == =80×1.25%= 121÷11=0.24×5= 18÷25%=（）×12= =
= 
÷
= 0÷
= 
﹣
= 12×（
×
×
= 
÷
= 20÷
= 
+
= 
×90×
=
×12= 1÷
= 
×
= 
+
= 
÷2=
= 
×
= 
÷
= 
﹣
=
表示 ；
表示 ．
÷
= 
×3= 6×
= 
+
×7=
÷1= 
÷7= 
=
= 
=
= 
=
）×12= 
=
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