(1)
7
16 ×
12
35 ÷
3
20 ,
=
3
20 ÷
3
20 ,
=1;
(2)[
7
8 -(
5
16 -
1
4 )]÷
26
27 ,
=[
7
8 -
1
16 ]÷
26
27 ,
=
13
16 ÷
26
27 ,
=
27
32 ;
(3)
7
4 ×
5
6 +
7
4 ÷6,
=
7
4 ×
5
6 +
7
4 ×
1
6 ,
=
7
4 ×(
5
6 +
1
6 ),
=
7
4 ×1,
=
7
4 ;
(4)5×4×(
1
5 ×
3
4 ),
=(5×
1
5 )×(4×
3
4 ),
=1×3,
=3.