《11-20各数的认识》课件.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,*,11,2,0,各数的认识,返回,12,12,10,个一,1,个十,是,12,15,14,17?,16?,16,11,13,18,2,个十,20,是,0,0,0,1,0,1,2,0,1,2,3,0,1,2,3,4,0,1,2,3,4,5,0,1,2,3,4,5,6,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,8,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,10,0,1,2,3,4,5,6,7,8,9,10,11,0,1,2,3,4,5,6,7,8,9,10,11,12,0,1,2,3,4,5,6,7,8,9,10,11,12,13,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,14,17,从,7,数到,17,从,11,数到,20,17,15,和,17,一个一个数,两个两个数,五个五个数,1个十,1个十,6个一,？,16,2个十,20,抢,答题,:,（,1,）,15,是由,(),个十和,(),个一组成,（,2,）,(),个十和,(),个一组成,17,（,3,）,16,前面一个数是,(),后面一个数是,(),（,4,）与,19,相邻的两个数是,(),和,(),1,1,15,18,5,7,17,20,