人教新课标一年级数学上册8、7、6加几上课.ppt

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,*,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,*,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,*,人教新课标版小学数学第一册,8,、,7,、,6,加几,1,例,1,例,3,例,2,复习题,练习题,2,1,、组成：,7,1,8,4,7,2,8,2,6,1,6,4,5,6,5,2,3,3,3,1,口答：,8+2+4=,14,7+3+2=,12,6+4+7=,17,4,2,1,2,、口算,9+5=9+8=,9+6=9+3=,14,15,17,12,5,8,5=,5,8,8,、,7,、,6,加几,6,8,、,7,、,6,加几,5,怎样想能很快说出得数？,8,5=,思考,7,8,、,7,、,6,加几,8,5=,想：,8,加（）得,10,。,2,5,主,8,8,、,7,、,6,加几,8,5=,想：,8,加（）得,10,。,2,5,主,9,8,、,7,、,6,加几,8,5=,想：,8,加（）得,10,。,2,5,主,10,8,、,7,、,6,加几,8,5=,想：,8,加（）得,10,。,2,5,主,11,8,5=,想,：,8,加（）得,10,。,2,2,3,10,13,8,、,7,、,6,加几,5,主,12,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,13,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,14,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,15,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,16,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,17,8,、,7,、,6,加几,8,5=,想,：,5,加（）得,10,。,5,8,主,18,8,4=,12,8,、,7,、,6,加几,7,6=,13,6,5=,2,19,8,4=,2,2,10,12,8,、,7,、,6,加几,7,6=,3,3,10,13,6,5=,4,1,10,11,2,主,20,8,4=,2,6,10,12,8,、,7,、,6,加几,7,6=,3,4,10,13,6,5=,1,5,10,11,1,主,21,8,9=,8,、,7,、,6,加几,怎样想能很快说出得数？,8,9,思考,22,8,9=,想：,8,加（）得,10,。,2,8,、,7,、,6,加几,9,主,23,8,9=,想：,8,加（）得,10,。,2,8,、,7,、,6,加几,9,主,24,8,9=,想：,8,加（）得,10,。,2,2,7,10,7,17,17,10,加（）得（）,。,9,8,、,7,、,6,加几,主,25,8,、,7,、,6,加几,8,9=,想：,9,加（）得,10,。,1,8,主,26,8,9=,想：,9,加（）得,10,。,1,8,、,7,、,6,加几,8,主,27,加几,8,9=,想：,9,加（）得,10,。,1,7,1,10,17,10,加（,7,）得（,17,）,。,8,主,28,4,想一想：,9+5=,9+6=,9+9=,14,15,18,小结：看大数、分小数、凑成十，算,得数。,做一做：,1,、,9+1+3=9+1+5=,9+4=9+6=,13,13,15,15,29,凑十歌谣：,小朋友，拍拍手，,大家来唱凑十歌，,九凑一，八凑二，,七凑三来六凑四，,五和五凑成满十。,30,1,圈一圈，算一算,+=,31,1,圈一圈，算一算,+=,32,2,7 +5 =,10,8 +6 =,10,33,3,7 +4 =,6 +5 =,7 +6 =,8 +7 =,7 +7 =,8 +3 =,34,4,7 +8 =,7 +9 =,6 +9 =,6 +8 =,6 +7 =,35,再见！,36,