圆柱内的沙子占圆柱的,倒入( )内正好倒满.
50个20是( )个十.A.10 B.100 C.1000
5×6×7×0等于( )A.30 B.210 C.0
750×60的积的末尾有( )个0.A.2 B.3 C.4
150×6的积末尾有( )个0.A.1 B.2 C.3
240×50积的末尾有( )个0.A.2 B.3 C.4