(1)
4
9 ×3.25+9
5
9 ×3
1
4 ,
=(
4
9 +9
5
9 )×3.25,
=10×3.25,
=32.5;
(2)
4
5 ÷(
5
6 ×
3
5 )-
1
2 ,
=
4
5 ÷
1
2 -
1
2 ,
=
8
5 -
1
2 ,
=
11
10 ;
(3)3.64÷4+4.36×25%,
=3.64×
1
4 +4.36×
1
4 ,
=(3.64+4.36)×
1
4 ,
=8×
1
4 ,
=2;
(4)25×1.25×32,
=25×1.25×8×4,
=(25×4)×(1.25×8),
=100×10,
=1000.