二年级数学下册五《加与减》小小图书馆同步练习3北师大版.doc

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1、1小小图书馆 一、用竖式计算。(1)139-116= (2)127-92=(3)409-128= (4)308-156(5)517-243= (6)909-128=(7)716-224= (8)372-143=二、(1)你估计 一下,买一台洗机衣和一台彩电需多少元?(2)妈妈带了 2000 元,能买回一台冰箱吗?三、解决问题。1、红色自行车 312 元,黄色自行车 489 元,买这两辆自行车一共需要多少元?2、小红的妈妈带了 900 元,买两件衣服分别是 557 元和 280 元,妈妈还剩多少元?3、世界最高的鸟是鸵鸟,他的身高是 275 厘米;世界最高的哺乳动物是长颈鹿,他的身高是 605

2、厘米,长颈鹿比鸵鸟高多少厘米?4、小明和小刚同看一本书。小明说:“这星期前 3 天我砍了 78 页,后 4 天我砍了余下的 125 页”小刚说:“星期一和星期二我砍了 118 页,星期一到星期三我砍了 200 页”这本书共有多少页?星期三小刚看了多少页?2参考答案:一、用竖式计算。(1)139-116= 23 (2)127-92=35(3)409-128=281 (4)308-156=152(5)517-243=274 (6)909-128=781(7)716-224=492 (8)372-143=229二、(1)2154(2)能三、解决问题。1、8012、633、3304、这本书共有 203 页,星期三小刚看了 82 页

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