四年级数学暑假作业练习题
一、填空：
1、a÷b=c，那么a=( )，b=( )。
2、用字母表示下面的运算律。
加法交换律：( )。
乘法分配律：( )。
乘法交换律：( )。
加法结合律：( )。
乘法结合律：( )。
3、32×a=a×32这是应用了( )律。
4、78×101=78×100+78这是应用了( )律。
5、长方形的计算公式是c=2(a+b)，根据乘法分配律还可以写成c=( )
6、红红买4本数，每本m元，付了50元，应找回( )元.
7、根据运算律，在□里填上适当的数。
45×□=36×□ (60×25) ×□=60×(□×8)
25×(4+8)= □×□+□×□ (a+b) ×15=a×□+□×□
m×168-m×18=□×(□-□) 24×(□×a)=(□×18) ×□
8、在○里填上“﹥”、“﹤”或“=”。
70×3+5 ○ 70×(3+5)
720÷36÷2 ○ 720÷(36÷2)
(65+13) ×4 ○ 65×4+13×4
32×(50-3) ○ 32×50+32×3
二、选择。
1、56×25×4=56×(25×4)这是根据( ).
A、 乘法分配律 B、乘法交换律 C、乘法结合律
2、147 ×49-47×49等于( )
A、4900 B、 (147+47) ×49 C、(147-49) ×47
3、下列变换正确的是( ).
A、502-198=500-200-4 B、502-198=500-200+4
C、502-198=500-200+2
4、68×99等于( ).
A、68×100-1 B、68×100-68 C、70×100
三、判断
1、(32+4) ×25=32+4×25 ( )
2、180÷5÷4=180÷(5×4) ( )
3、125×4×25×8=(125×8)+ (25×4) ( )
4、四年级第二学期数学期中试卷(青岛版)：52+83+48=83+(52+48)这一步计算只应用了加法交换律. ( )
5、101×98=(100+1) ×98 ( )
6、当a=2时，a2和2a大小相等。 ( )
四、怎样算简便就怎样算。
(80+8) ×125 77×101-77 12×102
135×6+65×6 125×32×25 360÷8÷5
87×99+87 25×48 270÷45
五、解决问题。
1、粮店运来面粉和大米各40袋，面粉每袋重25千克，大米每袋重50千克。运来的面粉和大米一共多少千克?
2、去超市买8辆儿童玩具车和8张儿童床，每辆儿童玩具车220元，每张儿童床480元。带5000元钱够吗?
3、一块长方形菜地，长105米，宽45米。需要给这块菜地围上一圈围栏，围栏有多长?
4、一个游泳池长50米，李明每次能游3个来回。李明每次能游多少米?
5、工厂新到一批零件订单。王师傅每天加工165个，他徒弟每天加工135个，师徒俩共用15天完工。
(1)这批零件共有多少个?
(2)王师傅比他徒弟多加工多少个?
6、甲乙两个工程队合修一条公路，甲队平均每天能修92米，乙队平均每天能修108米。按这样的速度计算，6月份他们共修路多少千米?
四年级语文暑假作业练习题
一、根据拼音，写出词语(10分)
Zhèn hàn
( )( ) pínɡ zhànɡ
( )( ) Shùn jiān
( )( ) fēi xiánɡ
( )( ) qīnɡ chè
( )( )
ɡuó huī
( )( ) lónɡ yǎ
( )( ) Huǐ huài
( )( ) Wéi bèi
( )( ) Wān yán
( )( )
二、辨字组词(5分)
锐( ) 辨( ) 捎( ) 剂( ) 孤( )
悦( ) 辩( ) 哨( ) 济( ) 弧( )
三、把下列词语补充完整。(8分)
雄心( )( ) 手不( )( ) 知( )知( ) 碌碌( )( )
( )其不( ) 鹏( )万( ) ( )向( )敌 自( )不( )
四、按要求写句子(6分)
1、面对这个失去亲人的孩子，我们怎能袖手旁观呢?(改成陈述句)
_________________________________________________________。
2、漓江的水很绿。(改为比喻句)
________________________________________
3、爸爸的遗体上覆盖着一面五颜六色的红旗。(修改病句)
________________________________________________。
五、选词填空(4分)
无论…都… 只要…就… 即使…也… 不是…而是……
1、飞机装上雷达，( )在漆黑的夜里，它( )能安全飞行。
2、 ( )什么地方，( )比不上我的家乡美。
3、放学回家后，我( )先出去玩，( )先做作业。
4、明天( )不下雨，春游( )会照计划。
六、按诗文内容或要求填空(7分)
1、填写人物所做的事情：小夜鹰：___________;普罗米修斯：__________。
2、填上反映人物特点的词语：法国雕塑家罗丹______________;伽利略______________。
3、科学家模仿蝙蝠探路的方法，给飞机装上了_______;科学家研究蜻蜓的翅膀，研制出了_________;科学家研究_________，研制出了_________。
4、飞蛾求生、砖缝中长出瓜苗、倾听心跳几件小事向我们展示的是________，盲童安静用自己独特的方式，感受着_____________。
七、给句子排排队(5分)X k B 1 . c o m
( )金色的秋季来了，老榆树在秋风中哼着丰收的曲子，将满树的叶子洒向大地。
( )我最喜爱校园东南角那棵老榆树。
( )大雪纷飞时，老榆树像一位巨人，傲然挺立在风雪中。
( )炎热的夏季，骄阳似火，老榆树用它茂盛的枝叶，为同学遮荫。
( )在万物复苏的日子里，老榆树换上了翠绿的春装。
八、积累与运用(4分)
1、日出江花红胜火，______________________。
2、竹外桃花三两枝，______________________。
3、______________________，白银盘里一青螺。
4、______________________，金石为开。X k B 1 . c o m
5、______________________——非一日之功。
6、砌墙的砖头——______________________。
7、天上鲤鱼斑，______________________。
8、______________________，言而有信。
九、课文回顾(3分)
在本学期学过的课文中，我们游览了祖国的许多名山大川，如被人们称为___________________的桂林山水;我们也认识了许多让我们敬佩的人，如《生命生命》中的作者杏林子，她对生命的态度是___________________;我们还了解了大自然给人类的启示，知道了____________是人类的老师。
四年级英语暑假作业专题练习
1._____________________I have two terms in a year.
2.________________________I am a pupil of Grade Four.
3._______________________Yes, it is.
4.________________________Davy is the last one.
5.______________________That blue one is mine.
6._________________________It is July 6th.
7_________________________ August is between July and September.
8____________________________It’s December.
9______________________ September, October and November .
10___________________ Mary does.
11 2000 is a leap year.(一般疑问句)_________________________________
12 Everything is white in winter._(what)__________________________
13 It’s Wednesday today.(what)_____________________________________
14 He has got three toy today.__________________________________
15 Have you got a calendar or not?(回答问题)___________________________________
16There is a computer in my study.________________________________
17There’re some pictures on the wall._______________________________
18The beautiful garden is near the building.____________________________
19Miss Green is my English teacher.________________________________
20Hong Wei is from Japan. Hong Wei__ ____ Japan.
21 Please clean the classroom.(否定句)____________________________
22 How big the building is !____ ____ ____ building!
23There are four seasons in a year.______________________________
24Christmas is my favourite festival._____________________________
25We often go to the beach at the weekend.__________________________________
26It’s March 3rd.___________________________
27She goes to school at 6:30 every day. (否定句)_________________________________-
28I go to the park every weekend. (一般疑问句)_____________________________
29I have some drinks in the fridge. (否定句)_______________________________
30There are some toy cars on the desk.________________________________
31Are there any knives in the box?(单数)_____________________________
32There is a sheep near the river.(复数)_____________________________
33What a nice school garden!(how)____________________________
34This is a beautiful girl.(感叹句)______________________________
35What’s beside the reading room?(用电脑回答)__________________________________
36Are there two bikes in your family?_(否定回答)____________________________
37What’s the date today?(实际回答)______________________
38Ther is a cup of water on the desk.____________________________
39There are some old toys in my schoolbags. (单数)_____________________________
40Here’s a present for you.(应答)___________________________
41The calendar tells us days and dates.(what)_____________________________
42 He likes to eat bananas (一般疑问句)_______________________________________
43 Today is Wednesday . (问句)___________________________________
44 I often read story books at the weekend. (否定句)__________________________________
Unit 3-4
1. She can play basketball. (否定句)_________________________________
2. We’re in Shanghai now.____________________________________
3. She doesn’t like drawing in the park(肯定句).______________________________
4. They have got many interesting pictures.(一般疑问句)_____________________
5. The girl is making a paper frog with her brother.________________________________
6. I like apples best.(what)____________________________
7. Her father’s favourite number is six.______________________________________
8. Mr Green’s shirt is white and pink. ___________________________________
9. We are singing and dancing on Children’s Day.____________________________
10. May and Tom are listening to the music.(who)___________________________
11. We can see one hundred story books on the bookcase.____________________
12. We want two long rulers.(Jane)________________________
13. They are sitting in an old car.(what)____________________________
14. We can buy clothes in the shop. (否定句)_____________________________
15. There’s a bird in my cage.__________________________________
16. The pupils of Class Two, Grade Three are running on the playground.(where)_________
17. There are five thin girls in my class.____________________________
18. We are drawing a picture under the tree._______________________________
19. I am a pupil of Class Five, Grade Three.(复数)____________________________
20. They are swimming in the swimming pool.(where)___________________________
21. Are they counting the sweets?(用数蜡烛回答)______________________
22. This girl likes yellow and blue. (否定句)________________________________
23. Clean our classroom, please. (否定句)_______________________________
24. We like to draw pictures. (一般疑问句)___________________________________
25. December 25th is the Christmas’ Day.(when)________________________
26. It’s warm in spring. (what)_____________________________
27. Tom reads books every evening. (否定句)________________________________
28. My father likes blue best.(what)_______________________________
29. ________________________I am in the classroom.
30. _______________________ They can jump high.
31. __________________________It’s very difficult.
32. _______________________Sorry, I can’t.
33. _______________________ There are some bright stars.
34. Tom is singing an English song.( what)______________________________
35. The nurses are wearing white coats.(who)________________________________
36. Linda’s parents are cooking dinner in the kitchen.(where)___________________________
37. We are riding horses. (否定句)___________________________________
38. The little girl is feeding the birds. (一般疑问句)________________________________
39. I can skip my rope well.___________________________________________
40. My favourite number is five.________________________________________
41. I like watermelons best.________________________________
42. My uncle like drinking coffee. (一般疑问句)____________________________
43. My English teacher has got a lot of English books.(否定句)______________________
44. We’re singing and dancing at the party. (一般疑问句)___________________________
45. I’m listening to music now. (否定句)__________________________________
46. I find a watch on the road. (否定句)_________________________________
47. The boys are climbing the mountain._______________________________________
48. Mr. King likes animals._______________________________