40×0.5= 6.8÷4= 14×0.5=
12.5÷5= 3.2÷0.8= 4×9.5×2.5=
15×0.04= 3÷0.6= （3.6﹣3.6）÷9.1= ．
40×0.5= 6.8÷4= 14×0.5=
12.5÷5= 3.2÷0.8= 4×9.5×2.5=
15×0.04= 3÷0.6= （3.6﹣3.6）÷9.1= ．
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