人教版一级数学下册有趣的百数表12425PPT课件

.,1,有趣的百数表,执教：余燕鸣,.,2,快来和数打招呼,96,18,50,99,92,91,93,94,95,97,98,100,808182,838584,88897072,73757466777978,5960646362465366342325,8510121411135646542211,445536,77887879,1946494547383635,302123,493755,.,3,10个十是100,我会数格子,行,.,4,10个十是100,我会数格子,列,.,5,找规律,11,13,17,19,.,6,找规律,1,3,5,7,9,12,14,16,18,20,.,7,11,13,17,19,1,3,5,7,9,12,14,16,20,11,22,33,44,?,55,66,77,88,99,.,8,11,13,17,19,1,3,5,7,9,12,14,16,20,22,33,44,66,77,88,99,55,28,37,46,64,?,73,82,91,.,9,13,17,19,1,3,5,7,9,12,14,16,20,22,33,44,66,77,88,99,55,28,37,46,64,73,82,91,1,11,11,21,31,41,?,51,61,71,81,91,.,10,1,11,21,31,41,51,61,71,81,91,2,12,32,42,52,62,72,82,92,3,13,23,43,53,63,73,83,93,4,14,24,34,54,64,74,84,94,5,15,25,35,45,65,75,85,95,6,16,26,36,46,56,76,86,96,8,18,28,38,48,58,68,78,98,9,19,29,39,49,59,69,79,89,10,20,30,40,50,60,70,80,90,100,7,17,27,37,47,57,67,87,97,22,33,44,55,66,88,99,77,合作交流,横看,竖看,斜看,第1行,第2行,第3行,第4行,第一列,第二列,第三列,学数表背口诀,横是行、竖是列；行是十位，列是个位；遇到行，十位要减1；遇到列，个位它不变；第十列，行不变。,.,12,35,57,75,.,13,57,75,46,67,.,14,.,15,.,16,.,17,.,18,.,19,.,20,.,21,.,22,78,88,87,22,24,42,44,.,23,我问你答,.,24,90,我比八十九多1,我是()。,我是鸭后面第6个数,我是()。,我比企鹅的个数少1,我是()。,我比企鹅的个数多1,我是()。,96,95,97,考考你,.,25,考考你,20,30,40,60,70,80,90,63,64,65,67,68,70,.,26,考考你,.,27,1,11,21,31,41,51,61,71,81,91,2,12,22,32,42,52,62,72,82,92,3,13,23,33,43,53,63,73,83,93,4,14,24,34,44,54,64,74,84,94,5,15,25,35,45,55,65,75,85,95,6,16,26,36,46,56,66,76,86,96,8,18,28,38,48,58,68,78,88,98,9,19,29,39,49,59,69,79,89,99,10,20,30,40,50,60,70,80,90,100,7,17,27,37,47,57,67,77,87,97,魔法框,.,28,十位是3的数,1,11,21,31,41,51,61,71,81,91,2,12,22,32,42,52,62,72,82,92,3,13,23,33,43,53,63,73,83,93,4,14,24,34,44,54,64,74,84,94,5,15,25,35,45,55,65,75,85,95,6,16,26,36,46,56,66,76,86,96,8,18,28,38,48,58,68,78,88,98,9,19,29,39,49,59,69