Question

2.5乘3.8乘0.4乘0.2的简便计算怎么做

Answer 1

2.5乘0.4等于1，,3.8乘0.2等于0.76，结果就是0.76

Answer 2

原式=（2.5*0.4）*（3.8*0.2）
=1*0.76
=0.76

Answer 3

先2.5*0.4得1，然后算3.8*0.2=0.76

Answer 4

2.5*0.4*（0.2*3.8）＝1*0.76＝0.76