(1)
5
12 ×
7
25 ×
3
14 ,
=
7
60 ×
3
14 ,
=
1
40 ;
(2)
7
9 ÷
1
2 ÷
35
36 ,
=
14
9 ×
36
35 ,
=
8
5 ;
(3)
1
14 ×(
7
8 +7),
=
1
14 ×
7
8 +7×
1
14 ,
=
1
16 +
1
2 ,
=
9
16 ;
(4)
3
5 ×
8
9 ÷
5
8 ,
=
8
15 ×
8
5 ,
=
64
75 ;
(5)
5
6 ×
1
4 +
5
6 ×
3
4 ,
=
5
6 ×(
1
4 +
3
4 ),
=
5
6 ×1,
=
5
6 ;
(6)96×
4
5 -36÷
5
4 +
4
5 ×40,
=96×
4
5 -36×
4
5 +
4
5 ×40,
=(96-36+40)×
4
5 ,
=100×
4
5 ,
=80;
(7)
4
9 ÷[(
1
3 -
1
9 )×2],
=
4
9 ÷[
2
9 ×2],
=
4
9 ÷
4
9 ,
=1;
(8)
3
4 +
7
9 +
1
4 -
4
9 ,
=(
3
4 +
1
4 )+(
7
9 -
4
9 ),
=1+
1
3 ,
=1
1
3 ;
(9)
2
7 ×
5
9 ÷
2
7 ×
5
9 ,
=
2
7 ×
5
9 ×
7
2 ×
5
9 ,
=(
2
7 ×
7
2 )×(
5
9 ×
5
9 ),
=1×
25
81 ,
=
25
81 ;
(10)(
11
12 -
3
7 )-(
4
7 -
7
12 ),
=
11
12 -
3
7 -
4
7 +
7
12 ,
=(
11
12 +
7
12 )-(
3
7 +
4
7 ),
=
3
2 -1,
=
1
2 ;
(11)
3
5 ×0.25+
3
5 ×
3
4 ,
=
3
5 ×(0.25+
3
4 ),
=
3
5 ×1,
=
3
5 .