小学数学人教一年级整十数加、减整十数-(2).pptx

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,#,整十数加、减整十数,伊宁县愉群翁乡托乎其于孜小学,热合麻义,1,个十和,2,个一合起来是,(),5,个十和,8,个一合起来是,(),46,里面有,(),个十,(),个一,30,里面有,(),个十,12,58,4,6,3,聪明屋,他们家一共养了多少只鸭和鹅？,40+30=,70,他们家一共养了多少只鸭和鸡,？,40+50=,90,50-40=,10,艾力家养了鸭,40,只，鹅,30,只，鸡,50,只。,他们家养的鸡比鸭多多少只？,30,20,70,10,50,30,90,50,比比看,30 20=,10,70 10=,60,40+6 0=,100,10,30,40,60,整十数加，减整十数,20+40,80+20,20+50,60-40,90-50,80-70,40-30,50+20,40+50,智慧果，看谁摘的多？,做一做，看谁算得又对又快：,80-30,70-50,50-10,50-50,70-40,80-60,70+10,40+40,30+60,80-70,70-30,60-40,50+30,20-10,60+20,50,0,80,10,80,20,30,80,40,10,40,20,90,20,80,小结：,通过这节课，你们学到了什么？,