dayuren
幼苗
共回答了25个问题采纳率:100% 举报
(1)
3
10 ÷6×
2
5 ,
=
3
10 ×
1
6 ×
2
5 ,
=
1
50 ;
(2)
1
5 +
4
5 ×
1
2 ,
=
1
5 +
2
5 ,
=
3
5 ;
(3)
3
4 ×
5
6 +
3
4 ÷6,
=
3
4 ×
5
6 +
3
4 ×
1
6 ,
=
3
4 ×(
5
6 +
1
6 ),
=
3
4 ×1,
=
3
4 ;
(4)
11
12 ÷[(
1
3 +
2
5 )×15],
=
11
12 ÷[
1
3 ×15+
2
5 ×15],
=
11
12 ÷[5+6],
=
11
12 ×
1
11 ,
=
1
12 .
1年前
1