题目内容
试题答案
20×50=
[ ]
A.380
B.600
C.1000
怎样算简便
850
[
A
B
C
D
36×20=
A.6000
B.800
C.720
60
A.13800
B.362
C.19200
D.380
60÷4=
A.30
B.18
C.15
D.120
用竖式计算
105×86=
A.183000
B.41600
C.9030
D.1000