9.8与5.6的差除以8的1/5,商是多少?
问题描述:
9.8与5.6的差除以8的
,商是多少? 1 5
答
(9.8-5.6)÷(8×
)1 5
=4.2÷
8 5
=
×21 5
5 8
=
21 8
答:商是
.21 8