一航白鹭
幼苗
共回答了18个问题采纳率:77.8% 举报
(1)14.4÷0.125÷8,
=14.4÷(0.125×8),
=14.4÷1,
=14.4;
(2)(
1
6 +
1
8 )×24×
1
5 ,
=
1
6 ×24×
1
5 +
1
8 ×24×
1
5 ,
=
4
5 +
3
5 ,
=
7
5 ;
(3)2.34×56-23.4×5.6,
=2.34×56-2.34×56
=2.34×(56-56),
=0;
(4)1.5×
4
5 +0.8×5.5+2×
4
5 ,
=1.5×0.8+0.8×5.5+2×0.8,
=(1.5+5.5+2)×0.8,
=9×0.8,
=7.2;
(5)1005÷[42×(
5
6 -
5
7 )],
=1005÷[42×
5
6 -42×
5
7 ],
=1005÷[35-30],
=1005÷5,
=201;
(6)
12
35 ÷[1-(
1
5 +
1
7 )],
=
12
35 ÷[1-
12
35 ],
=
12
35 ÷
24
35 ,
=
12
35 ×
35
24 ,
=
1
2 .
1年前
3