【简答题】
心算 60÷3=______1.4-0.8=______300÷6=______140÷2=______46+38=______240÷6=______1800÷9=______4200÷7=______46÷2=______330-70=______125×8=______72÷9=______606÷3=______150÷5=______630÷9=______300-300÷6=______16×20=______4.1+0.8=______50×16=______13×3=______14×20=______0÷11=______20×60=______19×20=______86-68=______30×12=______20×40=______330-70=______80×9=______11×60=______12×20=______18×40=______33×30=______9-4.8=______3.6-1.8=______6.7+2.5=______24÷4=______80-6=______60÷4=______4+28=______25+75=______0.6+1.5=______15×50=______141÷3=______91÷7=______3×4×5=______137-67=______380×10=______50×50=______26÷2=______6.2+3.9=______783÷6=______804÷2=______7×0=______780-70=______2407+3=______707÷7=______760-250=______8.4-7.5=______147÷7=______.
参考答案:
参考解析:
举一反三