用竖式计算
80×180=
[ ]
A.15400
B.14500
C.14400
D.1440
408×29=
A.11822
B.21832
C.31832
D.11832
竖式计算
109×75=
A.8175
B.9175
C.8725
D.8275
169×54=
A.2926
B.8126
C.9126
D.9226
368×48=
A.27664
B.16664
C.17654
D.17664
89个478相加的和是
A.52542
B.42542
C.42532
D.45242