新人教版六年级数学下册第4单元《比例》试题 (2)
1人教版六年级下册数学第四单元试卷班级∶姓名∶得分∶一、填空题。(30分)⑴12÷20=()∶5==()%。⑵某班有男学生28人,女学生25人。男学生和女学生人数的比是(),男学生和全班人数的比是()。⑶把4.2∶2.8化成最简单的整数比是(),比值是()。⑷做一批零件,甲要4小时完成,乙要5小时完成.甲、乙工作效率的比是(),比值是()。⑸把两个比值都是的比,组成一个内项为6和5的比例是()。⑹6∶4=3∶(),()∶=5∶⑺一幅地图的比例尺是,即图上1厘米表示实际距离()千米。在这幅地图上量得A、B两地距离是3.2厘米,实际距离是()。⑻┗─┻─┻─┻─┛是()比例尺,把它改写成数值比例尺...
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