搭配问题8.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,*,人教版三年级数学上册,数学广角,（组合问题）,铜鼓二小 魏宏身,例,3,作业,做一做,掷一掷,2002,年世界杯足球赛组球队如下：,2002,年世界杯足球赛组球队如下：,列式计算：,3,2,1,+,+,=,6,(,场）,还可以这样想：,返回,2+1=3(,种）,返回,返回,返回,2+1=3,（种）,返回,3+2+1=6(,次）,返回,+,1,2,3,4,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,10,5,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,10,5,6,7,8,9,10,11,6,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,10,5,6,7,8,9,10,11,6,7,8,9,10,11,12,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,10,5,6,7,8,9,10,11,6,7,8,9,10,11,12,列表计算,+,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,10,5,6,7,8,9,10,11,6,7,8,9,10,11,12,得数是,5-9,的可能性为 ，得数是其他数的可能性为 。,谢谢！,