资料简介
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com②可以根据小数点移动的规律来计算,乘10000就要把小数点向右移动四位。①1万元人民币就相当于1元人民币×10000,所以能换的美元也就是0.1563美元×10000。怎么列式呢?0.1563×10000=1563(美元)探索新知二同学们,你们还有别的做法吗?
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com2.同学们你们是怎么检验的?1563÷10000=0.1563,算对了。问题:1.我们做得是否正确呢?0.1563×10000=1563(美元)答:1万元人民币可以换1563美元。探索新知二
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com1.100张A4纸摞起来厚1cm,1张A4纸有多厚?1÷100=0.01(cm)答:1张A4纸有0.01cm厚。巩固练习三教材做一做翼
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com答:巩固练习三2.教材P47T6翼
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com3.巩固练习三教材P47T7
www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com4.巩固练习三教材P47T8翼
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