三年级数学下册三《乘法》电影院综合能力训练北师大版.doc

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1电影院1.【探究题】小强在计算乘法算式题时,不小心把乘数 32 看成了 23,结果减少了 189,求另一个乘数是多少。2.【信息题】地球绕太阳每秒旋转 29 千米,15 秒旋转多少千米?3.【生活情境题】成年人心跳每分约 75 次,照这样计算,23 分心跳约多少次?1 时呢?4.【潜能开发题】有 12 支篮球队参加比赛,每支篮球队都有 15 名队员,共有多少名队员参加篮球比赛?每支球队都有 10 名替补队员,那么这些球队总共有多少名替补队员?答案1.189(32-23)=212.2915=435(千米)3.7523=1725(次) 7560=4500(次)4.1215=180(名) 1210=120(名)2

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