工作就用美篇工作版","guide_search_desc":"海量模板范文,一键做同款 工作就用美篇工作版","img_beautify_switch":0,"ad_free":0,"text_direction":"1","template":{"id":9901,"series_id":18,"theme_id":18},"container":{"id":4150726,"user_id":81154186,"container_id":2,"stick_article_id":"","cover_img_url":"","display_name":"少年数学家","description":"","sort":1,"review_state":0,"ip":"1.80.3.184","state":0,"create_time":1642949702},"redirect":{"redirect_type":1,"img_url":false,"link_url":"/wap/downloadpage/backpage","button_bg_color":false,"button_desc":false,"redirect_desc":false},"edit_date_str":"发布于 2022-01-13","current_time":1743737884,"font_name":"","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"倍数","score":0.178337},{"name":"原来","score":0.174469},{"name":"杨树","score":0.172915},{"name":"每组","score":0.161369},{"name":"份量","score":0.156438},{"name":"画图","score":0.134362},{"name":"杉树","score":0.102877},{"name":"男生","score":0.086132},{"name":"我们","score":0.085316},{"name":"正好","score":0.081541}],"content":{"article_id":313053665,"content":[{"audio_music_id":0,"img_height":602,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/9f4cb7897f58b3d99b4d92b201e7e630__jpg.heic","img_width":664,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvOWY0Y2I3ODk3ZjU4YjNkOTliNGQ5MmIyMDFlN2U2MzBfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"
智”讲趣题 “慧”思数学
激发学习兴趣
开拓知识视野
提供学习资源
发展思维能力
培养数学素养
在这里我们探索思考路径,丰富解题策略,感悟数学思想,演绎数学魅力,展示自我风采!
少年数学家——郭彧凡
🏆倍数问题
倍数问题是指已知几个数的和或差以及这几个数之间的倍数关系,求这几个数的应用题,那么到底运用什么方法解决呢!解答倍数问题,必须先确定一个数(通常选用较小的数)作为标准数,即1倍数,再根据其他几个数与这个1倍数的关系,确定“和”或“差”相当于这样的几倍,最后用除法求出1倍数。
","type":1},{"audio_music_id":0,"source":0,"subtitle_align":"center","subtitle_color":"#5E1E02","subtitle_font_size":"medium","subtitle_style_id":12,"text":"思路分析","type":6},{"audio_music_id":0,"img_height":668,"img_size":106,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/51f040710126930c35b9de89667ae5a8__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvNTFmMDQwNzEwMTI2OTMwYzM1YjlkZTg5NjY3YWU1YThfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"从题中已知杨树的棵数正好是杉树的两倍,我们可以画图分析,可得杉树是一份时,杨树是两份,那现在每组分到杉树6颗,如果正好分完,每组应该分到杨树2×6=12棵,可是实际上每组杨树只分了8棵,也就是实际每组少分杨树12-8=4棵,再由题意杨树还剩20棵,可知这20棵为每组少分后共剩的20棵,那么组数为:20÷4=5(组),题目告诉我们7人为1组,所以参加植树的一共就有35人。答:参加植树的一共有35人。
","type":1},{"audio_music_id":0,"img_height":672,"img_size":114,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/dc979bad11e0506935fe968dba987f40__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvZGM5NzliYWQxMWUwNTA2OTM1ZmU5NjhkYmE5ODdmNDBfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"这道题结合画图分析,依据甲仓把31吨给了乙仓后,两仓所存货物同样多,图示清晰明了可得,甲比乙多31×2=62吨。我们再来看第二条关键信息:“若乙仓取14吨放入甲仓,则甲仓的货物是乙仓的4倍”,可继续画图,乙给甲了14吨,甲增加了14t后就是乙剩余的4倍,我们以乙剩余的为1份量,则甲增加后共有4份量,由图所示,变化后多出的62+14×2=90吨即为3份的量,所以一份量就是90÷3=30吨,那么乙原来就是:30+14=44(吨),再由第一条关键信息所得甲比乙多62吨,可得甲原来就是44+62=106吨,最后作答 原来甲存了106吨,乙原来存了44吨。
","type":1},{"audio_music_id":0,"img_height":674,"img_size":106,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/6905649902f97af13b212d279286758a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvNjkwNTY0OTkwMmY5N2FmMTNiMjEyZDI3OTI4Njc1OGFfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"同样我们画图分析,根据关键信息“甲取出自己存款的一半,乙取出自己的70元时,两人余下的钱正好相等”,我们作图如下,观察可得:当乙取出70元后剩下的钱为1份量时,甲原来存的钱就为两份量,而这三份量的总和为共存钱数减掉70元。所以甲原来存的钱与乙剩下的钱和为: 550-70=480(元),那么一份量就是480÷3=160元。乙原来取了70元,所以我们要加上70,乙原来为160+70=230元,甲有两份,所以甲就是160×2=320元,最后作答甲原来存有320元,乙原来存有230元。
现在转动你聪明的小脑筋,想一想下面的思考题吧!
1.幼儿园买来苹果的个数是梨的2倍。如果每组领3个梨和4个苹果,梨正好分完,苹果还剩16个。两种水果原来各有多少个?
2.学校组织夏令营活动,如果把女生参加的名额给男生5个,则男、女人数同样多;如果把男生参加的名额给女生4个,则男生是女生人数的一半。原定夏令营中男、女生各多少人?
西安高新第一小学 王方方
西安市教学能手
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激发学习兴趣
开拓知识视野
提供学习资源
发展思维能力
培养数学素养
在这里我们探索思考路径,丰富解题策略,感悟数学思想,演绎数学魅力,展示自我风采!
少年数学家——郭彧凡
🏆倍数问题
倍数问题是指已知几个数的和或差以及这几个数之间的倍数关系,求这几个数的应用题,那么到底运用什么方法解决呢!解答倍数问题,必须先确定一个数(通常选用较小的数)作为标准数,即1倍数,再根据其他几个数与这个1倍数的关系,确定“和”或“差”相当于这样的几倍,最后用除法求出1倍数。
","type":1},{"audio_music_id":0,"source":0,"subtitle_align":"center","subtitle_color":"#5E1E02","subtitle_font_size":"medium","subtitle_style_id":12,"text":"思路分析","type":6},{"audio_music_id":0,"img_height":668,"img_size":106,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/51f040710126930c35b9de89667ae5a8__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvNTFmMDQwNzEwMTI2OTMwYzM1YjlkZTg5NjY3YWU1YThfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"从题中已知杨树的棵数正好是杉树的两倍,我们可以画图分析,可得杉树是一份时,杨树是两份,那现在每组分到杉树6颗,如果正好分完,每组应该分到杨树2×6=12棵,可是实际上每组杨树只分了8棵,也就是实际每组少分杨树12-8=4棵,再由题意杨树还剩20棵,可知这20棵为每组少分后共剩的20棵,那么组数为:20÷4=5(组),题目告诉我们7人为1组,所以参加植树的一共就有35人。答:参加植树的一共有35人。
","type":1},{"audio_music_id":0,"img_height":672,"img_size":114,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/dc979bad11e0506935fe968dba987f40__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvZGM5NzliYWQxMWUwNTA2OTM1ZmU5NjhkYmE5ODdmNDBfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"这道题结合画图分析,依据甲仓把31吨给了乙仓后,两仓所存货物同样多,图示清晰明了可得,甲比乙多31×2=62吨。我们再来看第二条关键信息:“若乙仓取14吨放入甲仓,则甲仓的货物是乙仓的4倍”,可继续画图,乙给甲了14吨,甲增加了14t后就是乙剩余的4倍,我们以乙剩余的为1份量,则甲增加后共有4份量,由图所示,变化后多出的62+14×2=90吨即为3份的量,所以一份量就是90÷3=30吨,那么乙原来就是:30+14=44(吨),再由第一条关键信息所得甲比乙多62吨,可得甲原来就是44+62=106吨,最后作答 原来甲存了106吨,乙原来存了44吨。
","type":1},{"audio_music_id":0,"img_height":674,"img_size":106,"img_url":"https://ss-mpvolc.meipian.me/users/81154186/6905649902f97af13b212d279286758a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExNTQxODYvNjkwNTY0OTkwMmY5N2FmMTNiMjEyZDI3OTI4Njc1OGFfX2pwZy5oZWlj/nickname/5LqU5bm057qn5pWw5a2m5pWZ56CU57uE/userid/ODExNTQxODY=/sign/df8d3f7f75681f7bede56692362d6b55"},{"audio_music_id":0,"source":0,"text":"同样我们画图分析,根据关键信息“甲取出自己存款的一半,乙取出自己的70元时,两人余下的钱正好相等”,我们作图如下,观察可得:当乙取出70元后剩下的钱为1份量时,甲原来存的钱就为两份量,而这三份量的总和为共存钱数减掉70元。所以甲原来存的钱与乙剩下的钱和为: 550-70=480(元),那么一份量就是480÷3=160元。乙原来取了70元,所以我们要加上70,乙原来为160+70=230元,甲有两份,所以甲就是160×2=320元,最后作答甲原来存有320元,乙原来存有230元。
现在转动你聪明的小脑筋,想一想下面的思考题吧!
1.幼儿园买来苹果的个数是梨的2倍。如果每组领3个梨和4个苹果,梨正好分完,苹果还剩16个。两种水果原来各有多少个?
2.学校组织夏令营活动,如果把女生参加的名额给男生5个,则男、女人数同样多;如果把男生参加的名额给女生4个,则男生是女生人数的一半。原定夏令营中男、女生各多少人?
西安高新第一小学 王方方
西安市教学能手
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