1小学数学总复习知识点2总结（内部资料）3目录第一章数和数的运算......................................................................................................................................6一、概念..................................................................................................................................................6(一)整数...............................................................................................................................................6(二)小数...............................................................................................................................................8(三)分数...............................................................................................................................................9(四)百分数...........................................................................................................................................9二、方法..................................................................................................................................................9(一)数的读法和写法..............................................................................................................................9(二)数的改写........................................................................................................................................10(三)数的互化........................................................................................................................................11(四)数的整除........................................................................................................................................12(五)约分和通分....................................................................................................................................12三、性质和规律...................................................................................................................................
