(1)1292+540÷18×24,
=1292+30×24,
=1292+720,
=2012;
(2)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=3.15÷6.3,
=0.5;
(3)
9
20 ÷[
1
2 ×(
2
5 +
4
5 )],
=
9
20 ÷[
1
2 ×
6
5 ],
=
9
20 ÷
3
5 ,
=
3
4 ;
(4)[1-(
1
4 +
3
8 )]÷
15
16 ,
=[1-
5
8 ]÷
15
16 ,
=
3
8 ÷
15
16 ,
=
2
5 .