计算 -1÷(-5)x1/5的结果是A.-1 B.1 C.1/25 D.25

问题描述:

计算 -1÷(-5)x1/5的结果是
A.-1 B.1 C.1/25 D.25

c

1/25

答案:C.1/25
原式=1/5x1/5
=1/25

-1÷(-5)x1/5
=-1x(-1/5)x1/5
=1/25
所以:选择(C)