二年级数学下册五《加与减》算得对吗习题(无答案)北师大版.docx

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1算得对吗1、计算并验算。245357= 432267=231289= 573195=2、你能在方框里填上合适的数吗?3、先估算,再把下面的算式按和的大小,从小到大排列。498504 412189 899205 999801()()()()4、在表里填上合适的数,并验算结果是否正确。加数 295 459加数 503 471和 723 515答案与解析略 2

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