42.4+7.6= 1.58+2.42= 23.5+76.5÷0.25= 7.8﹣5.6=
1.25×4= 34.6÷0.2×4= 0.24÷0.3= 7.8×0.5=
1÷0.2﹣1×0.2= 57÷5.7= 8.1﹣0.05= 0.2×0.5=
42.4+7.6= 1.58+2.42= 23.5+76.5÷0.25= 7.8﹣5.6=
1.25×4= 34.6÷0.2×4= 0.24÷0.3= 7.8×0.5=
1÷0.2﹣1×0.2= 57÷5.7= 8.1﹣0.05= 0.2×0.5=
共250吨，列式是：
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