北师大版,四年级下册,小数的意义（三）（,1,）,在计数器上拨出,22.222,，并说一说其中的“,2,”分别表示多少。,新课导入,2,2,2,2,2,个位,十位,百位,十分位,百分位,千分位,2,个,2,个,0.1,。,2,个,0.01,。,2,个,0.001,。,2,个,2,个,推进新课,1,0.1,0.01,1.,在计数器上画一画，再填一填。,（,1,）,0.4,里面有（）个,0.1,，,0.025,里面有（）,个,0.001,。,（,2,）,14.24,中，个位上的“,4,”表示（）个（）；,百分位上的“,4,”表示（）个（）。,4,25,4,1,4,0.01,随堂演练,2.,看一看，填一填，说一说。,0.1,0.6,5.,在 里填上适当的分数或小数。,0.7,0.03,0.3,1.7,2.8,6.,尝试完成下面的计算。,0.110,0.1100,0.11000,0.0110,0.01100,0.011000,0.00110,0.001100,0.0011000,1,10,100,0.1,1,10,0.01,0.1,1,通过这节课的学习活动，你有什么收获？谈谈你的感受。,课堂小结,