《十几减7、6》课件

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温家庄小学 王建香15 9 =15 9 =口算口算17 9 =17 9 =11 9 =11 9 =13 9 =13 9 =19 9 =19 9 =6 68 82 24 41010探究一探究一探究二探究二探究一探究一探究二探究二13 8 =13 8 =5 5想:想:8 + ( 5 ) = 13 13 8 = 5想:想:10 8 = 2 2 + ( 3 ) = 5探究一探究一探究二探究二1、口算。、口算。16 8 =16 8 =11 8 =11 8 =15 8 =15 8 =15 7 =15 7 =8 83 37 78 8探究一探究一探究二探究二11 6 =11 6 =16 7 =16 7 =11 5 =11 5 =16 9 =16 9 =5 59 96 67 7、口答练习。、口答练习。探究一探究一探究二探究二11 6 =11 6 =16 7 =16 7 =11 5 =11 5 =16 9 =16 9 =5 59 96 67 76 65 57 79 9、口答练习。、口答练习。探究一探究一探究二探究二11 6 =11 6 =16 7 =16 7 =11 5 =11 5 =16 9 =16 9 =5 59 96 67 76 66 67 77 7、口答练习。、口答练习。探究一探究一探究二探究二11 6 =11 6 =16 7 =16 7 =11 5 =11 5 =16 9 =16 9 =5 59 96 67 75 55 59 99 9、口答练习。、口答练习。探究一探究一探究二探究二、看谁看得又快又好。、看谁看得又快又好。12 3 =12 3 =13 7 =13 7 =12 9 =12 9 =13 6 =13 6 =9 96 63 37 712 5 =12 5 =16 8 =16 8 =12 7 =12 7 =14 7 =14 7 =7 78 85 57 7练习一练习一练习二练习二练习一练习一练习二练习二1、看图列式计算。、看图列式计算。练习一练习一练习二练习二1、看图列式计算。、看图列式计算。4 48 84 48 86 67 76 67 7练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =7 74 4练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =7 79 94 44 4练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =7 79 96 64 44 48 8练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =12 6 =12 6 =7 79 96 66 64 44 48 86 6练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =12 6 =12 6 =11 8 =11 8 =7 79 98 86 66 64 44 43 38 86 6练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =12 6 =12 6 =11 8 =11 8 =13 6 =13 6 =7 79 98 86 66 66 64 44 43 37 78 86 6练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =12 6 =12 6 =11 8 =11 8 =13 6 =13 6 =17 9 =17 9 =7 79 98 86 66 66 69 94 44 43 37 78 86 68 8练习一练习一练习二练习二2、口算。、口算。11 4 =11 4 =13 4 =13 4 =11 3 =11 3 =13 7 =13 7 =14 8 =14 8 =12 6 =12 6 =17 8 =17 8 =14 7 =14 7 =11 7 =11 7 =13 9 =13 9 =14 6 =14 6 =12 6 =12 6 =11 8 =11 8 =13 6 =13 6 =17 9 =17 9 =14 7 =14 7 =7 79 98 86 66 66 69 97 74 44 43 37 78 86 68 87 7练习一练习一练习二练习二练习一练习一练习二练习二13只苹果,其中红苹果有只苹果,其中红苹果有8只,绿苹果有几只?只,绿苹果有几只?练习一练习一练习二练习二13只苹果,其中红苹果有只苹果,其中红苹果有8只,绿苹果有几只?只,绿苹果有几只?练习一练习一练习二练习二13只苹果,其中红苹果有只苹果,其中红苹果有8只,绿苹果有几只?只,绿苹果有几只?13 8 = 5(13 8 = 5(只只) )练习一练习一练习二练习二13只苹果,其中红苹果有只苹果,其中红苹果有8只,绿苹果有几只?只,绿苹果有几只?13只苹果,其中绿苹果有只苹果,其中绿苹果有5只,红苹果有几只?只,红苹果有几只?13 8 = 5(13 8 = 5(只只) )练习一练习一练习二练习二13只苹果,其中红苹果有只苹果,其中红苹果有8只,绿苹果有几只?只,绿苹果有几只?13只苹果,其中绿苹果有只苹果,其中绿苹果有5只,红苹果有几只?只,红苹果有几只?13 8 = 5(13 8 = 5(只只) )13 5 = 8(13 5 = 8(只只) )
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