计算下面各题.234÷7.2+6.5×0.8    

2025-02-25 22:38:43
推荐回答(1个)
回答1:

①234÷7.2+6.5×0.8,
=32.5+5.2,
=37.7;

②4.8+1.52÷0.4-0.4×6,
=4.8+3.8-2.4,
=6.2;

③(4.5-2.7)×(3.8+0.75),
=1.8×4.55,
=8.19;

④7.2÷[(7.22-6.41)÷9],
=7.2÷[0.81÷9],
=7.2÷0.09,
=80.