aut517
幼苗
共回答了16个问题采纳率:93.8% 举报
(1)
5
9 ×12+
1
6 ,
=
20
3 +
1
6 ,
=6
5
6 ;
(2)
5
10 ÷
3
10 =1
2
3 ;
(3)
1
6 +
2
9 +
5
6 +
3
9 ,
=(
1
6 +
5
6 )+(
2
9 +
3
9 ),
=1 +
5
9 ,
=1
5
9 ;
(4)
1
3 ÷[(
2
3 +
1
5 )×
1
13 ],
=
1
3 ÷[
13
15 ×
1
13 ],
=
1
3 ÷
1
15 ,
=5.
1年前
5