(1)
3
5 +1÷(
5
6 -
5
8 ),
=
3
5 +1÷(
20
24 -
15
24 ),
=
3
5 +1÷
5
24 ,
=
3
5 +1×
24
5 ,
=
27
5 ;
(2)(
5
6 +
2
3 -
3
4 )×24,
=
5
6 ×24+
2
3 ×24-
3
4 ×24,
=20+16-18,
=18;
(3)
2
3 +(
4
5 -
1
6 )×
8
18 ,
=
2
3 +(
24
30 -
5
30 )×
4
9 ,
=
2
3 +
19
30 ×
4
9 ,
=
2
3 +
38
135 ,
=
90
135 +
38
135 ,
=
128
135 ;
(4)0.625×9.6+62.5%×
2
5 ,
=0.625×9.6+0.625×0.4,
=(9.6+0.4)×0.625,
=10×0.625,
=6.25.