用简便方法计算
2000-368-132=
[ ]
A.555
B.11500
C.1500
D.455
473-305=
A.12
B.168
C.614
D.900
832-499=
A.333
B.450
C.980
D.720
820-301=
A.679
B.779
C.519
D.119
1281-502=
425-306=
824-105=
A.233
B.719
C.333
D.138
736-403=
342-204=
382
[
A
B