怎样简便就怎样算.(30.4-9.85)×0.4÷1.2
问题描述:
怎样简便就怎样算.(30.4-9.85)×0.4÷1.2
答
(30.4-9.85)×0.4÷1.2 =(30.4-10+0.15)÷3=20.55÷3=6.85
怎样简便就怎样算.(30.4-9.85)×0.4÷1.2
(30.4-9.85)×0.4÷1.2 =(30.4-10+0.15)÷3=20.55÷3=6.85