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小数的性质,一、复习,1分米=()厘米,10,=()毫米,100,500分=()角,=()元,50,5,(1)在()里填上适当的数。,(2)把下列分数改写成小数。,01,030,0800,0.2,0.20,二、新授(1),辨别:下面各数中的“0”,哪些“0”是属于小数末尾的“0”。,008,0,0,0603,00,00,500,0000000,0000000,1、不改变数的大小,把下面各数改写成三位小数。02=408=3=,0200,4080,3000,三、应用(1),04,040,04000,40,400,40000,400,4000,400000,改写,(2),四、新授(2),小数的末尾添上0或者去掉0,小数的大小不变。,小数的性质:,07,10509,10,五、应用(2),1、把下面各数化简。,0,00,000,070=,1050900=,10000=,2、下面各数中,哪些“0”可以去掉?,03,00,00,30,0,11,0000,2,0000,04,0,5,0,0,0,0,0,0,0,六、综合应用,1谁能只动三笔,在下面三个数之间划上等号?,602060260200,=,=,30200,2每人写几个和相等的数。,302,3020,302000,代检网代检网盯鬻葇,同学们再见!,
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