苏教版一年级下册《十几减8、74》ppt课件.ppt
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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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