二年级数学下册五《加与减》回收废电池一课三练北师大版.doc

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1第二节 回收废电池知识点 1 不进位加法的计算方法1 小动物过河。知识点 2 非连续进位加法的计算方法2画一画,填一填。238157 1822433.我会算。升级跷跷板4用竖式计算。327438 562143 809129 4832755买衣服。估一估,爸爸带了 500 元钱,买上面的服装够吗?6商店上午运来 327 箱矿泉水,下午运来 491 箱矿泉水,商店一共运来多少箱矿泉水?2智慧摩天轮7智慧填空。小朋友,你知道每朵享孓下面遮住的数是多少吗?请填出来。答案与点拨1. 285 376 497 798(从上到下) 587 468 975 8702. 395 4253. 756 9694. 765 705 938 7585. 280198478(元) 478 元500 元 够6. 327491818(箱)7.1 6 0

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