Question

简便计算0.5*0.3*0.02=？

Answer 1

运用乘法交换律及凑整法简算
0.5*0.3*0.02
=0.5*0.02*0.3
=0.01*0.3
=0.003

Answer 2

先看小数点后几位小数，本题有4位。然后这样计算:5x2x3x0.0001=0.003

Answer 3

可以先算0.5x0.02，然后再乘0.3就可以了。简便运算以后：0.5x0.02x0.3=0.01x0.3=0.003。

Answer 4

0.5×0.3×0.02
=（0.5×0.02）×0.3
=0.01×0.3
=0.003

Answer 5

先算0.5*0.02你可以理解为0.02的一半，即可得知为0.01，0.01*0.3为0.003