做个百数表-找规律.ppt

,你能按顺序填数吗?,2,3,4,5,6,7,8,9,11,13,14,15,16,17,18,20,21,22,24,27,29,30,31,32,33,35,36,38,39,40,41,42,44,45,46,47,49,50,51,52,54,55,56,57,59,60,61,62,63,65,66,68,69,70,71,72,74,77,79,80,81,83,84,85,86,87,88,90,92,93,94,95,96,97,98,99,25,26,43,53,先横着选几行数，读一读，你发现哪些有趣的现象?,横着看，第2行的前九个数十位上都是1。,一行中相邻两个数右面的数比左面的数大1。,再竖着着选几行数，读一读，你发现哪些有趣的现象?,竖着看，第1列的个位上都是1。,竖着看，一列中相邻两个数下面一个数比上面的数大10。,你们还发现了什么规律？,想一想，填一填。,22,32,33,想一想，填一填。,59,68,69,70,79,想一想，填一填。,56,57,58,66,68,76,77,78,