数学六年级下册《比例尺》课件之一终稿

April 17, 2021, 7:15 a.m. 文档页面

【文章导读】1,, , : , 12- , 8-,2, .,1=( ),1000,1=( ),10,1=( ),10,1=( ),10,30=( ),3000,300=( ),30,15=( ),1500000,40=( ),4,,3,, :,:,:,4,,5,,6,

文章介绍图片

  

【正文内容】

1,,:,12,8,2,.,1=(),1000,1=(),10,1=(),10,1=(),10,30=(),3000,300=(),30,15=(),1500000,40=(),4,3,:,:,:,4,5,6,()..,7,.,8,=:,9,1:100000000.,1:100000000,10,:,1cm50km.,11,(1)..,(2).,(3)1.,12,13,..,14,1.,2:1,15,.,:,=1cm:50km,=1cm:5000000cm,=1:5000000,16,50cm:40m=50cm:4000cm=1:80:1:80,50cm:40m==:,,40m50cm,17,

(1)1:20001cmcm()m().,2000,20,(2)1:2500001cmkm().,2.5,(3)1:4000000()().,040km,4000000,18,,1001:100(),(),19,(1)5cm200m(),5:200B.C.1:4000厘米,B,(2)4cm40mm(),C,1:10B.10:1C.1:1D.1,(3)(),023km,A.1:23B.1:2300000C.1:2300000km,B,20,20cm,5mm(),4:1,,21,(1)(2),:,22,10cm,23,:50km.,5000000cm50km,24,好好学习,天天向上,80m,60m。

3:,25,求出它们的比值,你发现了什么?,10cm10m,.,10cm10m,10m1000cm,1010001100,(),:1:100,26,1:600000015cmkm,27,900m(),,28,1:50000003.4cm.,29,3.6cm,22.5cm,9000km,,,,30,1900km1:40000000,4.75cm,31,.,4.5cm,1cm:40km=1:4000000,32,40m50cm,:,:,50cm:40m50cm:4000cm1:80,80,1,33,(1):1cm:600m=1cm:60000cm=1:60000,(2):,(1).,34,,

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