1.计算 1又3/4-0.25 .0.125*2/3 .0.063*1/9.1又4/8-0.75.
问题描述：
1.计算 1又3/4-0.25 .0.125*2/3 .0.063*1/9.1又4/8-0.75.
答
1又3/4-0.25
=1.75-0.25
=1.5
0.125*2/3 .
=1/8*2/3
=1/12
0.063*1/9.
=0.007
1又4/8-0.75.
=1.5-0.75
=0.75