2022初一数学寒假作业答案版

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2022初一数学寒假作业答案版（精选12篇）

篇1：2022初一数学寒假作业答案版

—、1.anybody2.noise3.weather4.quietly5.catches6.chance7.planning8.throw9.pets10.sign

二、1.will/isgoingtobe2.istalking3.went4.was5.don’tsell6.receiving7.swimming8.Don’tbe9.called10.brush

三、1.D2.A3.D4.A5.C6.A7.B8.B9.B10.C11.B12.B

四、1.Mostof the time.Ienjoystaying/beingathomealone.

2.1isten!Some one is ringing the doorbell.

3.If you want to keep fit.make sure you do some exercise everyday.

4.I’m very in terested in watch ing NBA games.

5.Do gsare our best friends.we shouldn’t bea fraidofthem.

五、1.A2.B3.C4.B5.D6.B7.C8.A9.D10.C

六、(A)1.D2.B3.C4.A5.C

(B)1.B2.D3.C4.A5.B

篇2：2022初一数学寒假作业答案版

1-5BCDDA6-10BBDDA11-15DCCDC

二、完形填空

1-5CBCDA6-10BDBAD

一、选择填空

1-5BCDDA6-10BBDDA11-15DCCDC

二、完形填空

1-5CBCDA6-10BDBAD

三、阅读理解ACCBD

四、填词

1.pollution2.strange3.Appeared4.geography5.dangerous6.frightened

篇3：2022初一数学寒假作业答案版

一、填空题 1、5，;

2、，3;

3、，;4、44，36.3;5、55，35;6、6，2;7、16(x+2)=352;8、4;

9、-13;10、67.5;11、122;12、132

二、选择题： B A B C B D

三、计算与解答：

19、计算：(1)-1;(2)10;(3)4x2y-7xy;(4)9a2b-8ab2 20.解方程：(1)x=1;(2)x= 21.化简求值：-a2b-3ab2=42

四、作图与推理

22、(1)11

23、面积为

24(1)AB=18cm(2)DE=1cm

25、(1)ang;EOD，ang;AOF(2)ang;BOF=50deg;

26、(1)西红柿30公斤，茄子20公斤。(2)56元。

27、(1)爱(2)扬

(3)见图三个点各1分(4)50或70。现在是不是感觉为大家准备的初一上册数学寒假作业答案很关键呢?欢迎大家阅读与选择!

篇4：2022初一寒假作业答案

21.card22.yellow23.pen24.many25.945-4938

1-5:DCBAA6-10:BCADC11-15:ACABD16-20:CADAB

二、完型填空。(10分)

1-5:ABACB6-10:AABCD

篇5：2022年初一寒假作业答案参考

2.D(答题时注意联系上下文，根据备选词语所修饰对象的特征，才能搭配好词语。)

3.A(答题时要读懂句子的意思，以及句中蕴涵的思想感情产，然后判断成语的感情 色彩和语体色彩与句子表意是否一致。A项中“得意忘形”贬义词，用在这里不恰当。)

4.D(这是一道典型的句子排序题，答题时要注意句与句之间的关系和前后句之间的衔接，并抓住关键词，如“总是”“也”等。)

5.(1)“如同”或“好比”(2)“随着”或“使”

6.(1)何当共剪西窗烛(2)随风直到夜郎西(3)潮平两岸阔(4)把酒话桑麻(5)无可奈何花落去似曾相识燕归来

7.[示例]各位朋友、各位来宾，化夏源脉、千年帝都、丝路起点、秦俑故乡，2011西安世园会将聚焦世界的目光，本次盛会以生态文明为引领，以“无人长安，创意自然”为主题，彰显西安历史文化和地域特色，探索人、城市、园林、自然和谐共生的未来发展模式。相信，在大家的共同努力下，西安世界园艺博览会将是一次的博览盛会!

8.[示例]西安世园会吉祥物以石榴为核心，意喻西安的市花——石榴花，同时吉祥物身体的形态与会徽相呼应，反映了西安本土特色，符合西安古者的地域文化和民俗气息，卡通化的面部亲切友好，圆圆的大眼睛一眨一眨地欢迎五湖四海的宾客，圆润的身体可爱而俏皮，说明了生活的和谐和美好，微微翘起的小手表达了对全世界游客的欢迎和期待。

9.C(“晩春”说法错误，应为“早春”。)

10.不好。“处处”“家家”两个词语与早春季节不符，“几处”“谁家”更真实贴切，所以不能改动。

11.C(C项中的“之”字为助词，相当于“的”，其他三项都是代词。)

12.B(“不”通“否”)

13.(1)与别人相约同行，丢下我走了。(2)小的时候很聪明，长大了未必有才华。

14.[示例]不失礼。因为友人不守信用，没有礼貌，对待这种不守信用、没有礼貌的人，就应该拒之于千里。(回答“失礼”或“不失礼”都可，言之有理即可)

15.两个人都聪明机智，能言善辩。[示例]我更欣赏元方，他尊重自己的父亲，敢于维护父亲的尊严，而孔文举则让人产生一种狂傲之感。

【参考译文】

孔文举十岁的时候，跟随父亲到洛阳。那时李元礼名气很大，做司隶校尉。到他家去的人，都是些才智出众的人、有清高称誉的人以及自己的亲戚才被通报。文举到了他家门前，对下边的人说：“我是李府君的亲戚。”已经通报上去，一起坐下来。李元礼问：“您和我有什么亲戚关系?”文举回答说：“过去我的祖先促尼曾经拜您的祖先伯阳为师，所以我和您是世世代代友好往来的亲戚关系。”李元礼和他的那些宾客没有不对他的话感到惊奇的。太中大夫陈韪后来才到，别人就把孔文举说的话告诉他，陈韪说：“小的时候很聪明，长大了未必有才华”文举说：“(我)猜想您小的时候一定很聪明吧。”陈韪局促不安起来。

16.《皇帝的新装》童话

17.开端：鸡王为改变家族地位召集幕僚想办法，做出母鸡停止下蛋的决定。发展：人类通过法律保护鸡，产下最后一只蛋的母鸡得到优厚的待遇。高 潮：母鸡们因嫉妒享受优厚待遇的母鸡而拼命下蛋，鸡家族又隐入任人宰割的境地。

18.人类利用蛋。

19.[示例]好。文章标题运用比喻修辞，形象具体地表现了母亲在游子心中的地位，表达了游子对母亲的思念。

20.一是买船票送“我”去武汉求学;二是买车票送“我”去北京谋生。

21.动作描写和神态细致地描写了母亲的孤寂生活，反映出对儿子的牵挂和关爱。

篇6：2022初一数学寒假作业答案版

The 1st Day

一、1. clever 2. easy 3. newspapers 4. windows 5. masters

6. glasses 7. newest 8. funny 9. wonderful 10. cameras

二、1 – 5 DDBCD 6 – 10 DBBCD

三、BDCEA

四、1. don’t do 2. Is there any 3. watches 4. Where does; live

5. When does;play 6. for Millie’s 7. good swimmer 8. was born

五、1. has 2. are 3. Does; take 4. to play 5. don’t watch

6. drawing 7. do; do 8. to keep 9. asking 10. visiting

六、1 – 5 ACBCA 6 – 10 DCCAC

七、1. My cousin also has a pair of football shoes.

2. This is a photo of my family.

3. Tom is the best at swimming in our class./ Tom is the best swimmer in our class.

4. The ticket for each adult is ten dollars.

5. Basketball players look tall and strong.

The 2nd Day

一、1 – 5 DGAJB 6 – 10 IEFCH

二、1 – 5 DDCBD 6 – 10 BDBBA

三、1. spends; writing 2. buy; for 3. is lying 4. I am; friend 5. Which man

6. Let’s go to school. 7. Don’t open the door, please

8. Are there any chairs; Yes, there are

四、1. A How 2. D Uncle John 3. D there is 4. C has 5. C be late

五、1. Are you; I’m 2. This is; twin brother 3. are nineteen students; a teacher

4. know this boy 5. best swimmer

六、1 – 5 BDCCB

The 3rd Day

一、DEABJFIGHC

二、1. grandparents’ 2. each 3. exercises 4. kind 5. email

6. both 7. price 8. information 9. together 10. except

三、1 – 5 BBDCA 6 – 10 CDBAC 11 – 15 DBACD

四、1. Both; and; are 2. Does; watch 3. What’s; price 4. goes to; by bus 5. like; best

五、1. All of the students in our class like this story very much.

2. We often have dinner at my grandparents’ home.

3. There are many kinds of flowers in the garden.

4. I don’t often make this kind of model plane.

5. I hope you can enjoy yourself at the party.

六、1. There are some walkmans in this shop.

2. I get happy when I dance.

3. Father goes to work without having breakfast.

4. Let him fly his kite in the park.

5. What is your hat made of?

七、1 – 5 ABBDC 6 – 10 CBCCD

The 4th Day

一、A) 1. teeth 2. candies 3. watches 4. brothers’ 5. activities

6. really 7. fishing 8. usually 9. holidays 10. closed

B) 1. on 2. for 3. in 4. at 5. on

6. of 7. with 8. by 9. as 10. at

C) 1. telling 2. to use 3. are listening 4. to have

5. Does; do 6. Is 7. turn 8. Are watching

二、1 – 5 CBCCD 6 – 10 BADBC

三、1. Children’s Day 2. Which umbrella; yours 3. Which festival do; like

4. my favourite sport 5. don’t think he is

四、1. calling — called 2. exciting — excited 3. have — having

4. to do — doing 5. for — as

五、1 – 5 DCBDA

六、1. same 2. Maths 3. student 4. only 5. with

6. hard 7. be 8. sport 9. Why 10. counts

The 5th Day

一、1 – 5 CBCBA 6 – 10 CBCCA

二、1. interesting 2. called 3. helpful 4. suitable 5. excited

6. first 7. swimmers 8. letting 9. having 10. Children’s

三、1 – 5 CBACC 6 – 10 BDACC

四、1. eating; with; in 2. make; out of 3. shines through

4. Which; sister’s favourite festival / Which festival does; like best 5. my first time

五、1. How long 2. Whose turn 3. Which woman

4. borrows; from 5. called 6. has

六、1 – 5 ABCAB 6 – 10 DCBDA

七、FFFFT

The 6th Day

一、DCCAB CBDAB

二、1. dress up as 2. people in the West 3. not…any more 4. play a trick on sb.

5. be on holiday 6. in many ways 7. my favourite festival 8. Happy Halloween

9. keep healthy 10. twice a week

三、1. drinks 2. September 3. shelves 4. Grey 5. posters

6. easy 7. lies 8. energy 9. Anyone 10. date

四、1 – 5 BDCBA 6 – 10 CDADB

五、1. Is there any fish on your shopping list?

2. It’s difficult for Americans to study Chinese.

3. Daniel wants to play basketball but he can’t run fast.

4. How long does your parter watch TV every week?

5. How often does Mrs White go swimming?

六、1. There is too much sugar in chocolate.

2. I like vegetables and fruit because they are good for me.

3. Is it time for babies to listen to music?

4. If you feel hungry and tired, have a cup of tea and have a rest.

5. Mr Li always reads newspapers before meals.

七、1 – 5 DCBCA 6 – 10 ACDCB

八、One possible version:

Tom usually has breakfast at home at 6:30.Before, he liked to have fast food. Now, he changed his diet. He often has some milk, bread and eggs for breakfast.At12:00, he has lunch at school. He often has some rice, meat and vegetables. Sometimes, he has fish. He often has supper with his family together. Now he is healthier than before.

The 7th Day

一、1. seldom 2. model 3. before 4. hungry 5. change

6. special 7. healthy 8. tired 9. twice 10. hamburgers

二、1 – 5 DDCAC 6 – 10 ADCAB

三、1. Why do; like 2. keep; fit/ healthy 3. Don’t; eat

4. What does; get 5. all the time

四、1. It’s very important to drink a lot of / a plenty of water every day.

2. How long do you sleep every day?

3. Good luck with your new diet and lifestyle.

4. Kitty plans to go swimming three times a week.

5. Students spend about seven hours a day studying at school.

五、1. This is not my mother’s sweater.

2. Does she want to dance?

3. I can learn a lot about Chinese History.

4. What is your favorite subject?

5. What time does she usually go to bed?

六、1 – 5 BBADD

七、1. usually 2. after 3. desk 4. Chinese 5. into

6. turn 7. help 8. Let’s 9. minutes 10. please

The 8th Day

一、1. tomatoes 2. scoring 3. Wednesday 4. list 5. January

6. neighbours 7. comfortable 8. expensive 9. matches 10. chooses

二、1 – 5 DBDBB 6 – 10 BABCB

三、1. speak to 2. gets to 3. is putting on 4. get up 5. get back

6. is taking off 7. There is 8. at weekends 9. see a doctor 10. is looking for

四、1. Is; or 2. more than 3. is/ looks like 4. They put about five eggs in a box.

5. favourite fruit

五、1. My parents and I are all good at sports.

2. I usually go running for one hour at weekends.

3. Does he take a bus to work every day? No, he goes by bike.

4. It is good to eat different kinds of food.

5. This is really a good place to play computer games.

六、1 – 5 CBCBD 6 – 10 AACDA

七、1. housework 2. hurry 3. take 4. yourself 5. worry

6. leaves 7. begins 8. know 9. help 10. think

The 9th Day

一、1. keep healthy/fit 2. be good for 3. be hungry 4. too much sugar

5. finish doing homework

6. 祝贺你! 7. 不再 8. 变得疲劳 9. 从不运动/锻炼 10. 感觉好些

二、1 – 5 CBDCA 6 – 10 CBDAC

三、A) 1. traditional 2. well 3. less 4. Teachers’ 5. dancers

B) 6. chatting 7. to buy 8. Did; invite 9. going 10. doesn’t fit

四、BDACE

五、1. doesn’t; enough; to buy; present for 2. getting fat 3. It’s important

4. seldom eat 5. exercise for

六、1. didn’t; any more 2. are some watches; boxes 3. How long does; play

4. with; and 5. walks home

七、1. They often plays football on the football field.

2. Kitty goes to her dancing lessons every day except Sunday.

3. Do you get red packets from your parents at Chinese New Year?

4. He doesn’t plan to have meat or bread for dinner

5. How many kinds of food can you eat in the restaurant?

八、1. It happened in the 18th century.

2. He liked to play cards for money.

3. He put the meat between two pieces of bread and held the food in his right hand while he played cards with his left hand.

4. Because they liked Sandwich’s idea.

5. Both.

The 10th Day

一、A) 1. Finally 2. after-school 3. candles 4. January 5. autumn

6. reason 7. However 8. fashion 9. boring 10. through

B) 1. raising 2. sounds 3. to practise 3. finishes 5. paid

二、1 – 5 CABCB 6 – 10 CBACA

三、1 – 5 FDECA

四、1. are some shoe shops 2. There are many 3. Which woman

4. Is; flying kites 5. There are different kinds of books in the bookshop.

五、1. How much is this pair of trousers?

2. She doesn’t eat any snacks or sweets any more.

3. Can we buy our grandpa some mangoes?

4. She is chatting with her friends on the Internet now.

5. I think we need enough water to keep healthy every day.

六、1 – 5 BDCAC 6 – 10 DBBAC

七、1. food 2. tall 3. lives 4. hard 5. fat

6. sit 7. still 8. try 9. Perhaps 10. without

The 11th Day

一、1. because 2. popular 3. also 4. jeans 5. cotton

6. soup 7. pretty 8. interesting 9. juice 10. tomatoes

二、1. to close 2. spends 3. speaking 4.( is )lying 5. Eating

6. dresses 7. am not feeling 8. collecting 9. carry 10. to drink

三、1. watch less TV 2. wait a moment/ minute

3. have/take a look 4. never mind

5. buy sb. sth./ buy sth. for sb. 6. on the top floor

7. the computer games center 8. write (a letter) to

9. at present/ at the moment/ right now 10. wait for my turn

11. borrow… from 12. try on

13. ask for help by calling 110/call 110 for help 14. different kinds of

15. a good place to meet friends 16. a sports shop

17. pay for… 18. pocket money

四、1 – 5 DBBCB 6 – 10 DBADB

五、1. It’s very easy to find the new supermarket.

2. It’s a good place to meet friends.

3. My cousin spends 30 yuan on/ buying this T-shirt.

4. What size are your feet?

5. I want to take/have a look at that music box.

六、1 – 5 DABBD

The 12th Day

一、1. friend 2. woman 3. National 4. same 5. wearing

6. large 7. fun 8. needs 9. restaurant 10. tie

二、1 – 5 ADCCB 6 – 10 ACDDD

三、1. playing with 2. keep healthy 3. in the future 4. any more

5. to borrow…from 6. go shopping 7. try to 8. at the moment

9. is trying on 10. is away

四、1. go on a trip 2. Would; like to 3. My favourite lessons

4. e-mail me 5. meets; at the weekend

五、1. I need you to help me (to) clean the classroom.

2. My mother’s birthday is coming (up).

3. How much does the pair of shoes cost?

4. I don’t have enough money to buy you a present.

5. The shoes match her favourite T-shirt well.

六、1–5 ADBCB 6–10 CDACD

七、1–5 FTFFT

The 13th Day

一、1. 1ook for 2. just a minute 3. a police car 4. shopping malls 5. teach us English

6. 给她买张唱片 7. 进行学校旅行8. 除了你我之外 9. 没关系;不要紧

10. 向某人问好

二、1. to say 2. on the top 3. Is; running 4. isn’t free 5. modern

三、1. about 2. By 3. for 4. with 5. after

6. of 7. to; with 8. to 9. through 10. at

四、1. Fine 2. weather 3. cold/hot 4. hot/cold 5. have

五、1 – 5 BCDAD 6 – 10 ABCDC

六、1. some shoe shops 2. How many times do you take the medicine a day?

3. There are 4. What is; doing 5. We don’t need to buy any vegetables.

七、1 – 5 DBBAD

八、1. take 2. true 3. why 4. safe 5. friends 6. place 7. feel 8. child

The 14th Day

一、1. lazy 2. smart 3. choose 4. colourful 5. noodles

6. poor 7. hundred 8. lemon 9. holiday 10. careful

二、1 – 5 CBDBD 6 – 10 CADCA

三、1. looking 2. colour 3. about 4. enough 5. larger

6. on 7. made 8. much 9. take 10. money

四、1. music 2. borrows 3. first 4. healthier 5. keeps

6. friends 7. writing 8. worried 9. rainy 10. photos

五、1. I don’t know what to say at the meeting today.

2. I hope you will like the fashion show.

3. How long does it take you to finish your homework every day?

4. I am wearing the popular clothes from the 1980s.

5. Are these scarves made of silk?

六、1 – 5 BABDC

七、One possible version:

My Good Friend

I have a good friend. He is a Chinese boy. His Chinese name is Li Ming and his English name is Daniel. He is 14 years old now. He studies at No. 1 Middle School. He is in Class 8, Grade 1. He is good at English, math and computer. He can sing and play basketball very well. He likes watching TV, too. He is very kind and friendly. He always helps others. He is polite and helpful. I like him very much.

The 15th Day

一、1. biscuits 2. knives 3. never 4. polite 5. borrow

6. style 7. Thursday 8. kitchen 9. members 10. library

二、1 – 5 ABBAB 6 – 10 DACDB

三、1. Does; do 2. Where do; go 3. How many babies are 4. takes a bus

5. buy; for 6. English; but; don’t

四、1. well 2. nice 3. comes 4. cooking 5. only

6. clubs 7. have 8. sounds 9. polite 10. them

五、1. I was born in Shanghai, but live in Suzhou.

2. Do you like to talk on the phone with your friends?

3. I usually go running for one hour at weekends.

4. It’s time for after-school activities.

5. The sports shop is open at 8.00 a.m., and it is closed after 5.00 p.m.

六、1 – 5 BADCD 6 – 10 CBADB

七、1 – 6 FFTFFF

寒假学习计划怎么写

一、每日作息时间表

早上：

7：00起床。

7：10—7：40刷牙吃饭。

7：50—8：30做作业。

8：30—9：00看电视或玩。

9：10—10：00看书。

10：00—11：00自由安排。

中午：

11：00—11：30吃饭。

11：40—1：00复习或做作业。

1：00—2：00玩。

2：00—3：00看书。

3：00—4：30休息。

4：40—5：30自由安排。

5：40—6：30吃晚饭。

晚上：

自由安排

二、假期要完成的事情

1、帮妈妈做力所能及的家务劳动。

2、做有意义的公益劳动。

3、学会一项家务技术或其他的小技术。

4、改掉一个坏毛病、缺点。

5、读一部好书，写出读后感。

6、根据身边的事物写一些文章，并选出一篇自己认为好的文章。锻炼自己的写作能力。

7、看一部好的电影，试着写出观后感。

8、学一首好歌。

9、试着克服一个自己曾经不敢/会做的(好)事。

10、完成假期作业，并努力做到。

11、要注意完成学校布置的所有作业，不要漏做或偷工减料、字体要工整。

12、一个星期至少一次到图书馆看小学生课外读物，或者自己家里有课外书的`把它看完，看一些自己喜欢的有益的书本。当然也不要忘了读一读本学期的科目书哦。每天要做适量的运动，不要因为天气寒冷躲。

13、天天看电视新闻报道，知多点国家大事，知多点交通防范安全，知多点走歪道的后果。

14、多帮妈妈分担力所能及的家务活，多向妈妈学习做饭炒菜等的生存技能。

寒假里的一天作文

寒假里的一天，我和爸爸妈妈去夫子庙看花灯。

一走进夫子庙，一眼看去，这里成了人的海洋，灯的世界。观灯的人不断地从四面八方涌来，把夫子庙挤得水泄不通。大街小巷到处挂着各种各样的花灯，有金黄的飞机灯带你周游世界，大红的莲花灯祝你身体健康，雪白的兔子灯向你拜年，粉红的狮子舞绣球灯祝你兴旺发达，蓝色的四面招财灯祝你日进斗金……真是美轮美奂，巧夺天工!

因为今年是兔年，所以灯会上的兔子灯最多。有一人多高的大兔子灯，还有手掌般大小的小兔子灯;有的兔子灯是用拷贝纸做的，有的则是用塑料做的。除了兔子灯，我还非常喜欢莲花灯，于是，爸爸给我买了一盏小的莲花灯。

篇7：2022初一数学寒假作业答案版

一.单项选择(以下各题都有四个选项，其中只有一个是正确的，选出正确答案填写在答题卡上。每小题2分，共24分。)题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 C B D A C B C D A B B B 二，判断(判断以下各题的说法是否正确，正确的选“A”，错误的选“B”。每小题1分，共4分。)题号 13 14 15 16 答案 A B A B

三、简答题：

17、答：对于外来的文化和习俗不能不加分析地简单模仿，全盘照搬，对有毒有害的东西要坚决抵制。

18、《中华人民共和国教育法》这些法律规定的权利主要包括：

1、入学权利

2、接受规定年限教育的权利

3、按规定获得奖学金、货学金、助学金的权利

4、完成规定学业，获得相应证书的权利等。(答到三点给全分)

四、分析题：

19、(1)不同意1分 对中学生而言，异性同学之间的交往不仅有利于学习进步，优势互补，而且有利于个性的全面发展，使性格更为豁达开朗，情感体验更为丰富，意志也更为坚强。(3分)(2)落落大方，掌握分寸。

互相帮助，互相学习。

提倡男女同学之间的群体交往。(意思答对即可)现在是不是感觉为大家准备的初一上册政治寒假作业答案很关键呢?欢迎大家阅读与选择!

人教版初一上册政治寒假作业练习题

篇8：2022高一数学寒假作业答案

C B D

2.a=1

m=1

{0,-1/3,-1/2}

第二页

1.(3/2，+∞)

B

B

2.01

C

C

第三页

1.-14

B

B

2.Mn

C

A

第四页

1.略

变式1：-1/5

变式2：不会

变式3：D

2. (1)略

(2)偶函数

变式1: a=-1 b=0

变式2: C

变式3: √2/2

第五页

1.图象略

减 [-3,-2), [0,1), [3,6) 增 [-2,0), [1,3)

Fmax=f(3)=4 Fmin=f(6)=-5

增(-∞, -1],(0,1] 减(1,+∞)

①②

2. (1)b^2-4ac<0

a>0

c>0

(2)b^2-4ac<0

a<0

c<0

变式1

第六页

1. B

2. A

3. ③

4. a^3×π/2

5. (1)过N在平面PDC内作NQ垂直于PD，连接AQ

略证明

(2)s=1×1×1×1/3=1/3

6.Ⅰ 由题可得D(0,1)

由两点式得 3x+y-=0

Ⅱ BC所在直线方程为 x-y+1=0

A到BC距离为 2√2

第七页

1.C

2.A

3.A

4.D

5.4-4/3π

6.∵CF:CB=CE:CA=1:2

∴E(0,3/2) F(2,7/2)

∴由两点式得L方程为 x-y+3/2=0

第八页

1.A

2.不会

3.D

4.0或1

5.S=a×b×√2/2×3=3√2/2ab

6.略

篇9：2022六年级数学寒假作业答案

1、简便计算 1/24 13， 1 ，48

2、填空

3/4 0.75 75% 七成五

5/8 0.625 62.5% 3/5 60%

四种：

192=1/2(384)=1/3(576)

273=1/2(546)=1/3(819)

327=1/2(654)=1/3(981)

219=1/2(438)=1/3(657)

3、填>、<或=

<， >， >;

< ，>=

4、列式计算

[3.09- 37/12 /(1.15+1/12)] X 10% = 0.059

解：设乙数为x，那么甲数为4/7x

x-4/7x=21

x=49

12000x3.14%x3+12000=13130.4(元)

1200x ( 1 - 99.5% ) = 6(人)

位置

篇10：初一寒假数学作业答案

一、知识导航

1、数与字母所有字母的指数和数字字母02、几个单项式的和次数最高的项的次数

3、单项式多项式4、合并同类项

二、夯实基础

1.D2.D3.C4.D5.C6.D7.D8.A9.6xy10.2a2+3ab-2b211.2a2212.

13.b-a14.(1)5m2-3mn-3n2(2)52537x?x?324135a?15.(1)9a+b-1值为3(2)x2-4值为2.25122

三、拓展能力

16、2217、-5x2-7x-1

篇11：2022初一数学寒假作业答案版

3、105度4、0

5、(P-XQ)

6、5/17、-238、7.5

9、4或210、0.5X+3)80%=16.8

11、a=-212、互为倒数13、2.51乘(10的5次方)14、015、不大于4

选择：BCDCDCCACCB

计算题：1、-132、303、

4、-2又2分之1

5、9

6、X=-5分之37、3

8、239、-a10、X=8

解答题：

(1)代数式2x+1将越来越大，-x方+4将越来越小

(2)有最值4，无最小值

2、

(1)39千米列式：15-2+5-1+10-3-2+12+4-5+6

(2)3.25升列式：(15+2+5+1+10+3+2+12+4+5+6)×0.05

=65×0.05

=3.25(升)

3、3.5年后

解：设李阿姨X年后得到30000元本息和。

列式：

25000+25000×5%×(1-20%)=30000

X=5

4、(1)平角AOE钝角AOD直角AOC锐角AOB

(2)角AOC=角AOB+角BOC

角AOE=角AOB+角BOC+角DOE

5、解：设每箱有X个产品。

5分之(8x+4)=7分之(11x+1)+1

X=12

答：每箱有12个产品。

6、(1)1354812

(2)6n-1=35

n=6

答：有，是第六个。

7、将10个除颜色外其余都相同的球放入一个黑布袋中，其中有5个红求，4个白球，1个蓝球。摇匀后随即摸出一个球，使其摸出红球的可能性为2分之1。

10、解：设甲、乙两地间的航行距离为X千米。

第1种可能：

(8+2)分之x+(8-2)分之(x-2)=3

x=10

第2种可能：

(8+2)分之x+(8-2)分之(x+2)=3

x=12.5

答：第1种情况为10千米，第2种情况为12.5千米。

11、(1)信息就随便拉

(2)120除以8%=1500(元)

(3)不一定。因为单位一不知道

12、正方形4的面积为8平方厘米。

13、可能性不大。

七年级数学上册寒假作业答案3

1.A;2.C;3.B;4.D;C;6.∠α=∠β，内错角相等，两直线平行;

5.平行或相交;6.AE、BC、CD、同位角，AE、BC、AB、内错角;

7.∠1与∠3、∠4与∠6，∠2与∠4、∠3与∠5，∠2与∠5、∠1与∠6、∠3与∠4、∠1与∠2、∠5与∠6;

8.答案不，如∠1=∠3;

9.解：BC∥DE.

因为∠2与∠DCE是对顶角，

所以∠DCE=∠2=1350，

因为∠D=450，

所以∠D+∠DCE=1800.

根据同旁内角互补，两直线平行可得BC∥DE.

AB与CD平行.

因为∠1与∠ABC是对顶角，

所以∠ABC=∠1=450，

因为∠2=1350，

所以∠2+∠ABC=1800.

根据同旁内角互补，两直线平行可得

AB与CD平行.

七年级数学上册寒假作业答案4

一.填空题

1.9;27;27;9

2.750

3.30;990

4.“四位数”3个(4290、4590、4890)

5.2;3

6.17(2、3、5、7)

7.391(17、23)

8.210=2×3×5×7;16;2310;2

9.6;24;14;15

10.1、12或3、4

11.b;a

12.1;ab

13.14;42

14.59

15.52;13;13;52;52;13

16.②⑥;①②④⑥

17.4、9或8、9或9、10

18.198或192

19.8520;2085

20.0或6(9120、9126)

21.ab

22.400(135=5×3×3×3，1925=5×5×7×11，486=2×3×3×3×3×3)

二。选择题

23.D

24.A

25.C

26.D

27.A

28.D

三.求下列各组数的最小公倍数和公因数

29.(87,145)=29;[87,145]=435

30.(36,48,72)=12;[36,48,72]=144

31.(35,56,105)=7;[35,56,105]=840

32.(136,187,255)=17;[136,187,255]=22440

四.解答题

33.4+15=9+10

4+15+9+10=38

34.144÷(2+3+7)=12

所以这三个数各是24,36,84

35.954,873,621

36.260=2×2×5×13=4×65

37.[3,4,5,6]-1=59

38.[3,4]=12

3×8÷12+1=3

39.63+91+129-25=258

258=2×3×43

所以这个整数是43

七年级数学上册寒假作业答案5

1.选择题

1A2D3A4C

2.填空

(1)T=20-6h20,6Thh

(2)Q=6x105-pt6x105pQt0≤t≤6x105/p

(3)S=1.5b(4)0≤x≤70≤y≤550

3.解答题

(1)y=Q/a-x–Q/a(0≤x≤a)

(2)y=80-2x

20(3)①-2≤x≤3

②当x=3,y有最小值为1/2

③当-2≤x≤0，y随x的增大而增大，当0≤x≤3，y随x的增大而减小

(4)①`v=800-50t

②0≤t≤16

③当t=8时，v=800-50x8=400

④当v=100时，100=800-50t

T=14

第5页—第7页

选择题

1B2C3C4B5B6A7B8D

填空

(1)1(2)y=2x+1-1(3)m<2n<3(4)y=-3x+3

(5)y=x+3(6)y=64x+48(7)S=2n+1(8)y=1/5x-630

解答题

(1)设y=kx+b

-4k+b=15

6k+b=-5

k=-2b=7

y=-2x+7

(2)略

(3)①表示y与x的关系，x为自变量

②10时离家10km13时离家30km

③12时-13时，离家30km

④13km

⑤2时-13时

⑥15km/h

第9页—第11页

1.选择题

(1)A(2)C(3)C

2.填空

(1)y=-2x(2)m<2(3)y=5x+3(4)y2>y1(5)y=-2x+10025(6)9

3.解答题

(1)①Q=200+20t②(0≤t≤30)

(2)①y=80(0≤x≤50)

y=1.9x-15(50≤x≤100)

②y=1.6x

③选择方式一

(3)①在同一直线上y=25/72x

②当x=72时，y=25

当x=144时，y=50

当x=216时，y=75

y=25/72x(0≤x≤345.6)

③当x=158.4时，y=25/72x158.4=55

(4)①y甲=2x+180

y乙=2.5x+140

②当x=100时，y甲=200+180=380

Y乙=140+250=390

380〈390

租甲车更活算

第13页—第15页

1.选择题

(1)D(2)C(3)C

2.填空

(1)x=2

y=3

(2)x=2x>2

(3)-3-2x=-5/8y=-1/8

(4)1/20x=2

y=3

(5)y=5/4x

2.解答题

3.(1)略

(2)①依题意

-k+b=-5

2k+b=1

解得

k=2b=-3

y=2x+3

当y≥0时

2x-3≥0,x≥3/2

②当x<2时，2x<4

则2x-3<1

即y<1

(3)①y会员卡=0.35+15

y租书卡=0.5x

②若y会员卡〈y租书卡

则0.35x+15<0.5x

x>100

篇12：2022初一数学寒假作业答案版

1、a<4

2、9±9

3、0

4、3-√7

5、-0.5

6、±a

7、≥1

8、略

9、2实偶次1正数1负

10、3162277660加上循环点选择题BCAC

15、11

16、(1)x=±30(2)x-1=±0.25x=5/4

17、a=1.5m=a=9/4