(1)(
1
4 +
1
5 )×20,
=20×
1
4 +
1
5 ×20,
=5+4,
=9;
(2)
9
26 ÷
8
13 ×
8
27 ,
=
9
26 ×
13
8 ×
8
27 ,
=
1
2 ;
(3)101×
1
7 -
1
7 ,
=(101-1)×
1
7 ,
=
100
7 ,
=14
2
7 ;
(4)
6
47 ×48 ,
=
6
47 ×(47+1),
=
6
47 ×47 +
6
47 ×1 ,
=6+
6
47 ,
=6
6
47 ;
(5)
16
39 ÷
9
14 +
16
39 ×
4
9 ,
=
16
39 ×
14
9 +
16
39 ×
4
9 ,
=
16
39 × (
14
9 +
4
9 ),
=
16
39 ×2,
=
32
39 ;