870102
春芽
共回答了11个问题采纳率:90.9% 举报
(1)
4
9 ×
1
5 ÷
4
5 ,
=
4
45 ÷
4
5 ,
=
1
9 ;
(2)36×(
2
3 +
1
6 -
3
4 ),
=36×
2
3 +36×
1
6 -36×
3
4 ,
=24+6-27,
=30-27,
=3;
(3)
1
8 ×58+42÷8,
=(58+42)×
1
8 ,
=100×
1
8 ,
=12.5;
(4)4-
5
11 -
6
11 ,
=4-(
5
11 +
6
11 ),
=4-1,
=3;
(5)(15-14×
4
7 )×
8
21 ,
=(15-8)×
8
21 ,
=7×
8
21 ,
=2
2
3 ;
(6)
4
5 ÷
5
8 -
1
2 ÷
5
8 ,
=
32
25 -
4
5 ,
=
12
25 .
1年前
8