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小数除以整数

人教新课标版五年级数学上册. 小数除以整数. 执教:曹艳. 复 习 引入. 12÷2= 120 ÷2= 1200 ÷2=. 560÷7= 56÷7= 5.6÷7=. 观察这两组算式有何特点?有哪个算式与众不同?. 怎样列算式呢 ?. 例题. 计划 4 天跑 22.4 千米,问:平均每天要跑多少千米?. 22.4÷4. = 5.6 (千米). 答:平均每天跑 5.6 千米。. 5.6. 5.6. 4. 4. 22.4. 22.4. 20. 20. 2 4. 2.4. …24 个十分之一. …24 个十分之一. 2 4.

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小数除以整数

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  1. 人教新课标版五年级数学上册 小数除以整数 执教:曹艳

  2. 复 习 引入 12÷2= 120 ÷2= 1200 ÷2= 560÷7= 56÷7= 5.6÷7= 观察这两组算式有何特点?有哪个算式与众不同?

  3. 怎样列算式呢? 例题 计划4天跑22.4千米,问:平均每天要跑多少千米? 22.4÷4 = 5.6(千米) 答:平均每天跑5.6千米。

  4. 5.6 5.6 4 4 22.4 22.4 20 20 2 4 2.4 …24个十分之一 …24个十分之一 2 4 2.4 0 0 商的小数点要和被除数的小数点对齐

  5. 5 6 0 自学例2: 整数部分不够商1时,先在商的个位上写0,点上小数点后再除。 答:王鹏每天要跑0.8千米。

  6. 练一练 根据5823÷3=1941,口算下列各题。 58.23÷3=  5.823÷3=     582.3÷3= 0.5823÷3=

  7. 练一练 25.2÷6 3.45÷15 0.54÷6 14.21÷7

  8. 说一说:你对本节课中哪个知识点印象深刻?

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