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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,2020/6/29,0,生活中的数,做个百数表,生活中的数做个百数表,1,【,重点,】,理解百数表上行和列的编排规律。,【,难点,】,能运用百数表上行和列的编排规律，正确地填表。,1.,在百数表上认识,100,以内的数。,2.,在百数表上进行数的定位练习，探究数与数之间的关系。,3.,培养和提升学生的思维能力、学习能力，让学生获得积极的情感体验,。,【重点】理解百数表上行和列的编排规律。【难点】能运用百数表上,2,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,你能从,1,数到,100,吗？在右面表格中填一填吧。,112345678913141516171820212224,3,同学们，说一说，,你发现了什么？,同学们，说一说，你发现了什么？,4,从 左 往 右 横 着 看,，你 发 现 了 什 么？,1.,每行的数都按每次大,1,的顺序排列。,2.,从第二横行起，每一行前,9,格的十位是相同的，个位上的数相差,1,，最后一格，变成比这行十位上的数大,1,的整十数。,从 左 往 右 横 着 看，你 发 现 了 什 么？1.每行,5,从上往下竖着看,，你 发 现 了 什 么？,1.,每列个位上的数是相同的。,2.,每列上下两个数之间相差,10,。,从上往下竖着看，你 发 现 了 什 么？1.每列个位上的数是,6,对角斜着看,，你 发 现 了 什 么？,1.,从左下角到右上角的斜行，相邻两个数之间相差,9,。,2.,从左上角到右下角的斜行，相邻两个数之间相差,11,。,对角斜着看，你 发 现 了 什 么？1.从左下角到右上角的斜,7,（,1,）,把个位上的数是“,0,”的涂上绿色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,1,（1）把个位上的数是“0”的涂上绿色。11234567891,8,（,2,）把个位上的数是“,7”,的涂上蓝色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,（2）把个位上的数是“7”的涂上蓝色。11234567891,9,（,3,）把个位和十位上的数相同的涂上黄色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,（3）把个位和十位上的数相同的涂上黄色。1123456789,10,（,4,）把个位上的数比十位上的数少,1,的涂上红色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,（4）把个位上的数比十位上的数少1的涂上红色。1123456,11,2,小熊写门牌号。,30,31,80,79,2小熊写门牌号。30318079,12,3,看一看，填一填。,36,38,40,60,50,90,100,3看一看，填一填。363840605090100,13,4,想一想，填一填。,29,大,1,大,10,37,39,47,48,30,32,41,50,52,75,74,76,84,86,94,95,96,4想一想，填一填。29大1大1037394748303241,14,5,想一想，填一填。,66,76,77,78,68,58,57,56,79,69,70,68,59,33,32,22,5想一想，填一填。667677786858575679697,15,百数表上行和列的编排规律,:,1.,从 左 往 右 横 着 看,每行的数都按每次大,1,的顺序排列。,从第二横行起，每一行前,9,格的十位是相同的，个位上的数相差,1,，最后一格，变成比这行十位上的数大,1,的整十数。,2.,从上往下竖着看,每列个位上的数是相同的。,每列上下两个数之间相差,10,。,3.,从左上角到右下角斜着看,从左下角到右上角的斜行，相邻两个数之间相差,9,。,从左上角到右下角的斜行，相邻两个数之间相差,11,。,百数表上行和列的编排规律:,16,1,找规律，填一填。,（,1,）,19,29,（）（）,59,（）,（,2,）,33,（）,55,66,（）（）,（,3,）,23,34,45,（）（）（）,（,4,）（）,86,（）,88,89,（）,39,49,69,44,77,88,56,67,78,85,87,90,1找规律，填一填。（1）19 29（）（,17,把个位上的数是“,3”,的涂上绿色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,2,把个位上的数是“3”的涂上绿色。11234567891314,18,把个位上的数是“,6”,的涂上蓝色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,2,把个位上的数是“6”的涂上蓝色。11234567891314,19,把个位上的数比十位上的数少,2,的涂上红色。,11,2,3,4,5,6,7,8,9,13,14,15,16,17,18,20,21,22,24,25,26,27,29,30,31,32,35,36,39,40,33,38,41,42,44,47,49,50,43,48,51,52,54,57,59,60,53,58,61,62,65,66,69,70,63,68,71,72,74,75,76,77,79,80,81,84,85,86,87,90,83,88,92,94,95,96,97,99,93,98,2,把个位上的数比十位上的数少2的涂上红色。1123456789,20,3,填一填,。,34,23,25,43,45,65,54,56,74,76,78,67,69,87,89,3填一填。342325434565545674767867,21,
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