2.4×2.5×5的简便运算=0.4x6x2.5x5=0.4x2.5x6x5=1x6x5=30希望能帮到你,望采纳
2.4×2.5×5 = 0.6 x 4 x 2.5 x 5 = 0.6 x 5 x (4 x 2.5 ) = 3 x 10 = 30特别注意记住, 25 x 4 = 100,所以看到题目中有25, 2.5, 0.25 之类的数,要想到和4相乘
2.4*2.5*5=0.4*6*2.5*5=(0.4*2.5)*(6*5)=30