计算下面各题:1/9÷1/6÷3/5=?2/5÷4/7×5/7=?(5/12+1/27)×27+5/8=?

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/21 08:36:41

计算下面各题:1/9÷1/6÷3/5=?2/5÷4/7×5/7=?(5/12+1/27)×27+5/8=?

1/9÷1/6÷3/5
=1/9×6×5/3
=10/9
=1又1/9

2/5÷4/7×5/7
=2/5×7/4×5/7
=1/2

(5/12+1/27)×27+5/8
=5/12×27+1/27×27+5/8
=45/4+1+5/8
=12又7/8