一年级数学下册第1单元加与减(一)《快乐的小鸭》习题(新版)北师大版.docx

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1快乐的小鸭1、我是小法官。 (对的打“,错的打“)1、退位减法只能用凑十法计算。 ()2、7+9 不能用凑十法计算。 ()3、口算 16-8,可以从 16 开始一个一个地减,减八次等于 8。 ()4、18-9=16-8。 ()二、数一数,算一算,圈一圈。1、 15-7=2、 14-6=三、解决问题。1、图书柜有 15 本书,借走 7 本,还剩多少本?2、树上原有 11 只猴子,下去了 6 只,树上还剩几只猴?答案与解析一、1、 2、 3、 4、二、1、8 2、8三、1、15-7=8 2、11-6=5 2

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