甄足波（西师版一年级11减几课件）.ppt

11 减 几,西师版一年级数学课件,执教：甄足波,綦江区永城小学,口算：,9+5=8+4=7+5=6+5=7+4=3+8=5+6=2+9=9+7=6+6=8+7=4+9=,14,11,16,12,11,12,12,11,15,11,11,13,你棒极了！,115,大家好，我是小狗笨笨。我有个问题请教大家，能帮帮我吗？,11,1,1,1,1,1,=6,105=5,5+1=6,因为 5+6=11，所以11 5=6,11,1,4,=6,1110=1,1+5=6,11-3=,8,11-8=,3,伙伴们快上来呀！,11 1=10 11 10=1,11 2=9 11 9=2,11 8=3 11 3=8,11 4=7 11 7=4,11 6=5 11 5=6,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,哎呀，我们迷路了。有没有小朋友愿意帮我们呀？,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,4,9,2,3,7,5,11,12,116,119,118,5+6,4+8,114,112,117,7+4,9+3,小动物找家,1、看图填空,+,=,11,11 3=,11 8=,=,+,11,11-7=,11 4=,2、我会算,11-3=11-5=11-9=11-4=11-8=11-6=11-7=11-10=11-2=,