以内数的认识ppt.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,100,以内数的顺序,苏教版一年级数学下册,要开动物运动会啦！快来报名呀！,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第二行,第七行,第九行,第一行,第三行,第四行,第五行,第六行,第八行,第十行,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第二行,第七行,第九行,第一行,第三行,第四行,第五行,第六行,第八行,第十行,先横着选几行数,读一读,你发现哪些有趣的现象,?,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第二行,第七行,第九行,第一行,第三行,第四行,第五行,第六行,第八行,第十行,每一,横行的前,9,格，十位上的数相同，个位上的数依次多,1.,再竖着选取几行数,读一读,你发现哪些有趣的现象,?,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第二行,第七行,第九行,第一行,第三行,第四行,第五行,第六行,第八行,第十行,竖排个位上的数相同，十位上的数依次多,1.,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,第二行,第七行,第九行,第一行,第三行,第四行,第五行,第六行,第八行,第十行,45,你们还发现了什么规律？,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,11,2,1,22,3,1,3,2,33,4,1,4,2,4,3,44,5,1,5,2,5,3,5,4,55,6,1,6,2,6,3,6,4,6,5,66,7,1,7,2,7,3,7,4,7,5,7,6,77,8,1,8,2,8,3,8,4,8,5,8,6,8,7,88,9,1,9,2,9,3,9,4,9,5,9,6,9,7,9,8,99,1,2,3,4,5,6,7,8,9,10,11,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,20,22,2,3,2,4,2,5,2,6,2,7,2,8,2,9,30,33,3,4,3,5,3,6,3,7,3,8,3,9,40,44,4,5,4,6,4,7,4,8,4,9,50,55,5,6,5,7,5,8,5,9,60,66,6,7,6,8,6,9,70,77,7,8,7,9,80,88,8,9,90,99,100,试一试,照左图，在百数表里框出几个数，看看是哪几个？,把下图中缺的数填上。,15,16,25,26,把下图中缺的数填上。,23,13,33,22,24,55,号 的周围都是谁？,55,56,54,56,54,45,45,65,65,46,46,44,44,64,64,66,66,1.,比,69,大,1,的（）。,2.,比,100,小,1,的数是（）。,3.,40,比（）大,1,比（,),小,1,。,填空,70,99,39,41,1.,从四十五数到五十二。,2.,从八十八数到一百。,3,.,从七十五数到六十二。,数一数,想一想,说一说,想一想,说一说,30,31,32,33,(),(),(),34 35 36,25,30,35,40,(),(),(),想一想,说一说,45 50 55,想一想,说一说,80,70,60,50,(),(),(),40 30 20,想一想,说一说,42,44,46,48,(),(),(),50 52 54,判断,1.,个位上是,5,的两位数有,10,个。,2.,十位上是,5,的两位数有,10,个。,3.79,添上,1,是,8,个十。,4.75,比,76,多,1,。,我的收获是,.,我最高兴的是,.,谢谢！,