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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,*,*,得数是,9,的加法和,9,减几,7-5=,4+3=,2+4=,3+5=,8-4=,6+2=,8,4,8,6,7,2,1 + 8 = 9,8 + 1 = 9,?,?,9 - 1 = 8,9 - 8 = 1,1+8=9,8+1=9,9-1=8,9-8=1,2+7=9,7+2=9,9-2=7,9-7=2,3+6=9,6+3=9,9-3=6,9-6=3,4+5=9,5+4=9,9-4=5,9-5=4,+,=,9,哪两张卡片上的数相加等于,9,？,1,8,4,5,3,6,6,3,2,7,8,1,0,9,7,2,5,4,9,0,9-,9,0 =,9,9,2 =,7,9,3 =,6,9,7 =,2,9,8 =,1,9,1 =,8,9,5 =,4,从一个数减几，减去的数越小，得数就越大,9,5,9,6,9,3,7,9,9,2,9,4,5,2,+,7,2 + 5 = 7,8,4,-,4,3,9,你能填出几道算式？,拓展延伸,把,1,、,2,、,3,、,4,、,5,、,6,、,7,、,8,、,9,这,9,个数填在里组成三道算式，每个数只能用,1,次,这节课你有哪些收获呢？,再见,
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