认识小数,人教新课标三年级数学下册,学习目标,1. 通过探究小数与分数的内在联系，理解小数的意义。2. 让同学们在分组讨论、集体交流中培养合作、交流的意识。,一、在括号里填上合适的数。,（ ）,（ ）,（ ）,（ ）,二、比较大小。,三、加减运算。,+ =,+ =,- =,- =,0.4,0.6,0.5,0.7,0.8,0.9,1.0,1.试一试，分别用分数和小数表示涂色部分。,分数小数,分数小数,0.2,0.27,2、在内填上适当的分数，在（ ）内填上适当的小数,0.3,0.9,0.04,0.08,返回,结束,0.4,0.8,返回,结束,0.04,0.08,0.4,0.8,（,（,0,0.01,）,）,0.004,0.008,3.在（ ）里填上合适的小数或分数。,=( ),=( ),=( ),=( ),=( ),=( ),0.7,0.03,0.073,0.9,0.47,0.457,4.判断,把“1”分成10份，每一份用小数表示是0.1。,X,5、选择。,0.18表示（ ）。 ,
