人教版一下数学《20以内退位减法的综合练习》获奖公开课课件.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,*,20,以内的退位减法,的练习,大渡口区育才小学 张毅平,钓鱼大赛,14,9,5,12,3,16,8,9,8,热身运动,钓鱼咯！,钓鱼咯！,12,9,15,6,19,3,17,5,14,7,11,3,7+6,18,9,8+8,13,4,17,9,11,2,13,7,12,8,15,7,14,6,3,9,9,16,7,8,6,12,16,9,8,9,13,4,8,8,12,9,15,6,19,3,17,5,14,7,11,3,7+6,18,9,8+8,13,4,17,9,11,2,13,7,12,8,15,7,14,6,3,9,9,16,7,8,6,12,16,9,8,9,13,4,8,8,15,8+4,19,9+3,6+6,9,7 +9+3,13,4+5,18,2,8,11,14,3,19,13,8,7+,12,13,8,6+,11,18,9,16,7,8=4,5,9,9,12,我钓了,11,条鱼。,我钓了,6,条鱼,其中 有,2,条。,6,11,5,-=,11,6,5,-=,11,5,6,6,11,5,-=,11,6,5,-=,11,5,6,5,7,8,6,13,14,-=,满载而归,