第1单元 100以内的加法和减法(三)练习一（课件PPT）-【优翼·学练优】2022-2023学年二年级数学上册同步备课（苏教版）

苏教版二年级上册 练习一 第一单元·100以内的加法和减法(三) www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 4＋26＝ 30 35－7＝ 28 35＋6＝ 41 45－20＝ 25 68＋9＝ 77 70－8＝ 62 1.口算下面各题。 www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 22+28+34= 84 84-8-28= 48 75-27+30= 78 62-39+25= 48 详解 详解 详解 详解 练习题 【点击详解可见具体解题过程】 2. www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 3.算出每条线上3个数的和，填在( )里。 22 35 24 13 33 44 ( ) ( ) ( ) 90 90 90 www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 3.算出每条线上3个数的和，填在( )里。 ( ) 87 ( ) 86 ( ) 95 ( ) 94 43 17 27 35 34 17 43 26 www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 4.小华上午在饲养棚里拾了28个鸡蛋，下午拾了25个鸡蛋和37个鸭蛋。 53(个) 详解 28+25= 答:小华这天一共拾了53个鸡蛋。 小华这天一共拾了多少个鸡蛋？ (1) 【点击详解可见具体解题过程】 www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 4.小华上午在饲养棚里拾了28个鸡蛋，下午拾了25个鸡蛋和37个鸭蛋。 拾的鸡蛋比鸭蛋多多少个？ (2) 16(个) 详解 53-37= 答:拾的鸡蛋比鸭蛋多16个。 【点击详解可见具体解题过程】 www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com 练习题 5.星海小学二年级参加三项体育活动的人数如下： 97(人) 32+40+25= 答:参加三项活动的一共有97人。 参加三项活动的一共有多少人？ (1) 你还能提出哪些问题？ (2) (答案不唯一) www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100.com www.youyi100