①38×25=
②40×26=
③481÷8=
④△508÷7=
①78×25=
②※472÷7=
③※87×56=
④527÷5=
24×12= 26×37= 65×84= 496÷8=
69÷3= 932÷9= 543÷3= ★637÷5=验算:
3.6-2.8= 10-7.6= 14.6+3.9=