凑十法练习题(DOC 15页).doc

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1、9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =

2、9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =

3、9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =

4、8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =

5、8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =

6、7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =

7、7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =

8、6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =

9、6 + 6 = 6 + 5 = 5 + 9 = 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =6 + 6 = 6 + 5 = 5 + 9 =

10、 5 + 8 = 5 + 7 = 5 + 6 =4 + 9 = 4 + 8 = 4 + 7 =3 + 9 = 3 + 8 = 2 + 9 =9 + 6 = 9 + 5 = 9 + 4 =9 + 3 = 9 + 2 = 9 + 7 =9 + 8 = 9 + 9 = 8 + 8 =8 + 7 = 8 + 9 = 8 + 6 =8 + 5 = 8 + 4 = 8 + 3 =7 + 9 = 7 + 8 = 7 + 7 =7 + 6 = 7 + 4 = 7 + 5 =6 + 9 = 6 + 8 = 6 + 7 =8、对生活垃圾进行分类和分装,这是我们每个公民应尽的义务。6 + 6 = 6 + 5 = 5

11、 + 9 =8、铁生锈的原因是什么?人们怎样防止铁生锈? 23、我国是世界上公认的火箭的发源地,早在距今1700多年前的三国时代的古籍上就出现了“火箭”的名称。5 + 8 = 5 + 7 = 5 + 6 =一、填空:答:我们每个人要做到不乱扔果皮,不随地吐痰,爱护花草树木,搞好环境卫生,保护好身边的环境。力争做一个环保小卫士,向身边的人宣传和倡议环保。4 + 9 = 4 + 8 = 4 + 7 =18、北斗七星构成勺形,属于大熊座,北极星属于小熊座。答:当地球运行到月球和太阳的中间,如果地球挡住了太阳射向月球的光,便发生月食。3 + 9 = 3 + 8 = 2 + 9 =18、北斗七星构成勺形,属于大熊座,北极星属于小熊座。6、重新使用是指多次或用另一种方法来使用已用过的物品,它也是减少垃圾的重要方法。20、对生活垃圾进行分类、分装,这是我们每个公民的义务。只要我们人人参与,养成良好的习惯,我们周围的环境一定会变得更加清洁和美丽。

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