︽ ︾
；75 5 )
1
) × 20 ( 6 0
(
11. =
5 )
1 ；75
20 ；60
18 ；
／ (
( 1 )×
)×
(
10. =
×6
9. =
)
(
×( ／ )
8. =
)
；7 5 5
(60 1
)× ×20
(
7. =
6.
(／ )×
5. =
4.
20
)
)× () (
3. = ( ／
)
；
(／ )× ( ) (
2. =
+
1. = +
︾
︽
= ×50%
6.
×
=
5.
×
=
4.
)
；
( 6
= × +
3.
= ×
2.
)
； 12 12
； 1 1
12
× (
=
1.
)
︾
(︽
|
