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人教新课标二年级数学下册

人教新课标二年级数学下册. 解决问题. 制作人:张 晶. 面包房一共做了 54 个面包,小明家买了 24 个,小丽家买了 8 个,还有多少个?. 54- ( 24+8 ) =54-32 =22. 54-24-8 =30-8 =22. 三个小组共回收了 94 个废旧电池,第一小组回收了 34 个,第二小组回收了 29 个,第三小组回收了多少个?. -. ( 1 ) 94 - 34 =60 (个) 60 - 29=31 (个). 或 94 - 34 - 29=31 (个).

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人教新课标二年级数学下册

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  1. 人教新课标二年级数学下册 解决问题 制作人:张 晶

  2. 面包房一共做了54个面包,小明家买了24个,小丽家买了8个,还有多少个?面包房一共做了54个面包,小明家买了24个,小丽家买了8个,还有多少个? 54-(24+8) =54-32 =22 54-24-8 =30-8 =22

  3. 三个小组共回收了94个废旧电池,第一小组回收了34个,第二小组回收了29个,第三小组回收了多少个?三个小组共回收了94个废旧电池,第一小组回收了34个,第二小组回收了29个,第三小组回收了多少个? - (1)94-34 =60(个) 60 -29=31(个) 或94-34 - 29=31(个) (2)34+29 =63(个) 94 - 63=31(个) 或94-(34 + 29)=31(个)

  4. 我们班一共有33人,有15个男生和9个女生参加迎面接力比赛,其他的小朋友当拉拉队,那么拉拉队有多少人?我们班一共有33人,有15个男生和9个女生参加迎面接力比赛,其他的小朋友当拉拉队,那么拉拉队有多少人? 33 -15 -9 = 9(人) 33 -(15 +9)= 9(人)

  5. 每瓶5元 每箱36元 和你的小伙伴一起讨论: 1.买整箱的饮料,每瓶的价钱比零售少 多少钱? 2.买1箱饮料的钱,零买能买几瓶?

  6. 一共有( )气球? 你是怎么样想的?

  7. 郁金香 每枝9元 玫瑰 每枝5元 康乃馨 每枝3元 1.买1只郁金香和5枝玫瑰要花( )元。 2.用20元钱买6枝康乃馨,应找回( )元钱。 自己提问题,并解答,记录在自主小天地中。

  8. 挑战自我 算一算: 、 各表示几? + + = 16 + + + =21 =() =()

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