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苏教版一年级下册《十几减8、74》ppt课件.ppt

发布:2018-02-16约小于1千字共11页下载文档
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十 几 减 8、7;?;;11-9= 12-9= 13-9= 14-9= 15-9= 16-9= 17-9=   18-9=   19-9=        11-1=   13-3= 15-5=;有13个气球。;15 – 9 = 13 – 8 = 11 – 7 =;14 – 8 = 12 – 9 = 11 – 7 = 13 – 7 = 16 – 7 = 15 – 8 = 17 – 9 = 16 – 8 = 18 – 9 =; 9 = 8 = 11 – 7 =;15 – 9 = 5 + 9 = 7 + 9 = 13 – 8 = 7 + 5= 18 – 9 = 16 – 8 = 2 + 9 = 17 – 9 = 11 – 7 = 12 – 9 = 11 – 8 =;( )— ( )= 7;今天,你又有哪些收获?
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