5800除以1600,商是3,余数是( )A.10 B.100 C.1000
30里有几个10?( )A.6 B.3 C.5
50里有几个10?( )A.6 B.7 C.5
70里有几个10?( )A.6 B.7 C.8
20×3的结果是( )A.30 B.50 C.60
10×8的结果是( )A.80 B.100 C.60