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1、6.1 整十数除两三位数1. 口算 63070 时,可以把算式看成( )()。2. 乙数是甲数的20 倍, 如果乙数是80,则甲数是()。3. 口算。48040 720 30930304. 甲乙两地的距离是556 千米 , 一辆汽车从甲地出发,它的速度是50 千米 / 时,大约需要行驶多少小时才能到达乙地?【答案】1.63 7 2。 43。12 24 314。5565011(小时)尊敬的读者:本文由我和我的同事在百忙中收集整编出来,本文档在发布之前我们对内容进行仔细校对,但是难免会有不尽如人意之处,如有疏漏之处请指正,希望本文能为您解开疑惑 , 引发思考。文中部分文字受到网友的关怀和支持,在此
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