小学数学二年级下册估算题
我要小学数学二年级下册估算练习题
推荐回答（3个）
一、看谁算的对 (20分)
元考试卷 15+8= 72-22= 34+28= 91-26=
210+60= 830-200= 1000-600= 590+60=
500+200= 600+190= 9000-7000= 670-90=
320+500= 250+400= 9000-6000= 90+40=
170+700= 500+900= 8200-8000= 400+700=
二、笔算。(16分)
660+150= 720-470=
800-490= 350+360=
三、连一连.(12分)
190+280
790
98-23
75
510+280
470
570-380
690
920+280
1200
820-130
190
四、估算。（4分）
382+246 693-295
（ ） （ ）
五、在〇里填上“〉”、“〈”或“=”。(12分)
800-400 〇 600 750-50 〇 70
9000-7000 〇 1000+3000 160-90 〇 120-80
440+300 〇 800 860-90 〇 360
六、列式计算。（9分）
1．830比60多多少？ 2．63是7的几倍？
3．370比一个数少200，这个数是多少？
七、解决问题。(27分)
1、到商场看一看（13分）
收音机 台灯 闹钟 书包
72元 58元 25元 37元
（1）买一个闹钟和一个书包一共要给多少钱？（4分）
（2）妈妈给你100元让你买两样东西，你准备买什么?还剩下多少钱？（4分）
（3）你还能提出什么数学问题？并解决这一问题。（3分）
2、汽车限乘50人 （8分）
第1队
28人
第2队
17人
第3队
20人
第4队
26人
（1）、哪两个队不能合坐一辆车？请你算一算（4分）
答：第( )队和第( )队不能合坐一辆车。
（2）、你能提出什么数学问题？并解决这一问题。（4分）
3、参观科技馆（4分）
800个座位
上午：398人 下午：401人
请你估算：如果上午的同学和下午的同学一起参观，座位够吗？
4、同学们去植树，上午植了360棵，下午植了440棵，一共植树多少棵？（4分）
八、开放窗口。（10分）
从第2筐拿出50个萝卜放入第1筐，两筐就同样多。第1筐原来有（ ）个？
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