480+520=
[ ]
A.100
B.10000
C.900
D.1000
890-600=
A.220
B.290
C.190
D.390
860+47=
C.807
D.907
770-550=
B.320
C.120
D.230
270+148=
B.318
C.418
D.417
190+150=
A.150
B.340
C.430
D.710
230-80=
B.510
C.390
350+360=
B.170
340+50=
与下面问题相对应的算式是哪个?
3037
[
A
B
C