(1)8470-104×65
=8470-6760
=1710;
(2)1.3-3.79+9.7-6.21
=1.3+9.7-(3.79+6.21)
=11-10
=1;
(3)3.64÷4+4.36×0.25
=3.64×0.25+4.36×0.25
=(3.64+4.36)×0.25
=8×0.25
=2;
(4)(
1
9 -
1
12 )×4×9
=(
1
9 -
1
12 )×36
=
1
9 ×36-
1
12 ×36
=4-3
=1;
(5)
9
20 ÷[
3
2 ×(0.4+
4
5 )]
=
9
20 ÷[
3
2 ×(
2
5 +
4
5 )]
=
9
20 ÷[
3
2 ×
6
5 ]
=
9
20 ÷
9
5
=
1
4 ;
故答案为1710;1;2;1;
1
4 .