初三数学同步练习答案【优秀6篇】

做数学题可以高效帮助学习者理解全方位,多角度理解基本知识,拓展思路,积累技巧。而这些恰是考试所需要的。这次为您整理了初三数学同步练习答案【优秀6篇】,在大家参照的同时,也可以分享一下给您最好的朋友。

小学五年级数学练习册答案 篇1

小学五年级数学练习册答案

1分数乘法 分数乘整数

我会填

(1)2/3加2/3加2/3=2/3×3=2 (2)4/7+4/7+4/7=4/7×3=12/7

2、一把尺子长3/10m。 3/10×3=9/10 我会算

21/4

25/3

5/3

8/13

4/3

16/3

2/3

14/3

4/3

5

2看图列式计算

加发算式:9/10+9/10+9/10+9/10+9/10=9/2

乘法算式:9/10×5=2/9

3、列式计算。

(1)3个8/3相加是多少? 3/8+3/8+3/8=9/8

(2)15的2/5是多少? 15×2/5=6 (3)4/7的3倍是多少? 4/7×3=12/7

1、小军每天晚上喝3/5杯果汁。他一周喝多少杯果汁? 1周=7天

3/5×7=21/5(杯) 答:他一周喝21/5杯。

2、全校有18个班,如果每班节纸3/7kg。照这样计算,全校一周可节约用纸多少千克? 3/7×18=54/7

一周=7天

54/7×7=54(kg) 答:全校一周可节约用纸54kg。

一辆汽车从甲地开到乙地,每小时行驶全程的1/18。6小时行驶全程的几分之几? 1/18×6=1/3

答: 6小时行驶全程的1/3。

一张报纸的厚度大约是2/5mm。100张这样的报纸叠放在一起,厚度大约是多少厘米? 2/5×100=40(mm)

40mm=4cm

答:厚4cm。

再见,还出哦

上海初三数学练习册答案 篇2

一、填空。 1.我们已学过的(

)、( )、( )、( )四种运算,统称为( )

运算。

2、( )法和( )法叫做第一级运算;(

)法和( )法叫做第二级运算。

3、一个算式里,如果只含有同一级运算,要从( )往( )依次计算。

4、一个算式里,如果只含有一级运算,要先做( )后做( )。

5、一个算式里,如果有括号,要先算(

),再算(

)。

6、在四则混合运算中,遇到除法的商的小数位数较多或出现循环小数时,一般保留( 位小数,再进行计算。

7.4.9547保留三位小数是( ),保留两位小数是( )。保留一位小数是( )。 8.计算12÷[(2.4-0.48)×5]时,要先算(

),后算(

)再算( )。

二、计算下列各题。 (1)39.4-12.56 (2)36.405+0.495

(3)4.06÷0.7 (4)10.03÷5.9

三、仔细观察下面各题,先说一说它们的共同点和不同点,然后再计算。 2.4-0.6÷1.5+0.5×2 (2.4-0.6)÷1.5+0.5×2.4-0.6÷(1.5+0.5)×2 2.4-0.6÷(1.5+0.5×2)

2.4-(0.6÷1.5+0.5×2) 2.4-(0.6÷1.5+0.5)×2

) (2.4-0.6÷1.5+0.5)×2 (2.4-0.6)÷(1.5+0.5×2)

(2.4-0.6)÷[(1.5+0.5)×2]

四、列综合式解答下列各题。

(1)97.6除以1.6的商;加上1.25与16.8的积,和是多少?

(2)30.5减去23.7的差,除以0.085与4的积,商是多少?

五、列式计算。

3.4.35减去0.78与3.28的和去除0.406,商是多少? 2.10.1与24.35的和,除以13,再乘以0.6,积是多少? 1.0.24与0.5的积除以0.04,所得的商再加上3.5,和是多少?

[(2.4-0.6)÷1.5+0.5]×2

初三英语配套练习册答案 篇3

【Unit 4】

Section A

一、1.million 2.charity 3.tie 4.medical 5.nervous

二、1.medical 2.going 3.friendly 4.won 5.to work

三、1~5 DFBGA

四、1.had;would go 2.what to write 3.What if someone else 4.would give; to charity

Section B

一、1.circle 2.herself 3.bother 4.annoy 5.fairly 6.plenty 7.listener

二、1~5 BCDBA

三、1.energetic 2.not to run 3.speech 4.listener 5.would have

四、1.What if 2.doesn't;in the slightest 3.rather than/instead of 4.to get along; with 5.what to say 6.so that

五、1~5 ACDEB

Self Check and Reading

一、knowledge 2.represent 3.correct 4.deep 5.offered 6.covers

二、1~5 CBDAD

三、1.in public 2.are sure 3.bother 4.get along with 5.in front of 6.comes top 7.right away 8.plenty of

四、1.cut yourself by accident 2.make her comfortable 3.come up with 4.come out 5.stop working

五、1~5 DFEAB

六、1.were 2.would try 3.would not say 4.would allow 5.were 6.would give 7.would set

七、1.If I becameill rich/had lots of money, I would give you 1,000,000 dollars. 2. He fell seriously and couldn't afford to go to hospital. 3.肯鼓励他不要放弃希望。 4. Because he knew about Tony’s illness from one of his classmates. 5. 1,000,000 dollars.

【Unit 5】

Section A

一、1.piic 2.author 3.appointment 4.final 5.anxious

二、1.Alice's 2.possibly 3.dropped 4.worried 5.owner

三、1.The hair band must belong to Linda. 2. This shirt is much too small for John. 3. We need one more player to make up a soccer ball team. 4. They put off the meeting because of the heavy rain. 5. What do you think “crucial” means?

四、1.Whose T-shirt 2.belong to 3.author 4.author 4.could he 5.Why is

五、1~5 DECAB

Section B

一、1.sky 2.catch 3.noise 4.wind 5.interviewed

二、1.monkeys 2.escaped 3.neighbors 4.unhappy 5.director

三、1.for exercise 2.to catch 3.what is happening 4.In;swimming 5.be afraid making

四、1.Did;use to 2.doesn't think; could 3.isn't he 4.There;something wrong 5.What are

五、1~5 EBCAD

Self Check and Reading

一、1~5 BCDAA 6~10 CCBDA 11~12 DD

二、1.possibly 2.noise 3.final 4.catch 5.smells 6.fingers 7.lift 8.ocean 9.stone 10.pretended

三、1.hers 2.worried 3.visiting 4.unhappy 5.footsteps 6.watching 7.to work 8.careful 9.dishonest 10.pretending

四、1.belong to 2.don't think 3.Did;use to 4.because of 5.Who must

五、1~5 BAACD 6~10 BAABD

六、1~5 ACABB

七、1~5 BAECD Unit 6 I like music that l can dance to

Section A

I.1.prefer 2.gentle 3.lyrics 4.remind 5.favorite

II.1.dance to 2.remind;of 3.along with 4.Heart Strings 5.What;dislike;clearly III.1.prefer 2.makes 3.reminds 4.wearing 5.interest

IV.1~5 GABCF

Section B

I.1.fisherman 2.latest 3.features 4.display 5. energy;miss

II.1.suggests 2.Whatever 3.photographer 3.does have 4.have to 5.What kind of

III.1.music that l love 2.as successful as 3.does have 4.what to 5.what kind of

IV.1~5 DAGCE

Self Cheak and reading

I.1.lyrics 2.reminds 3.honest 4.cancer 5.laboratory

II.1.musicians 2.dislike 3.clearly 4.latest 5.mainly

III.1.bad for;stay away form 2.in agreement 3.suits;just fine 4.Be sure to 5.sing along with IV.1~5 DBDBA 6~10 BBCCD V.1~5 BDABC 6~10 ACADC

Unit 7 WHere would you like to visit

Section A

I。1.educational 2.thrilling 3.to trek through the jungle 4.too stressed out 5.consider asking

II。1.thrillers;thrilling 2.to tour;touristy;tourists;tourist 3.relaxing;relaxes;relaxed 4.tired;tiring 5.lively;lived;alive;liveliest

III。1.where there are;with 2.are supposed to 3.who can 4.is supposed to be 5.would like to

Section B

I.1.provide 2.easy 3.light 4.including 5.vacation

II.1.provide us with some useful information 2.In general;junk food 3.Traveling around; by taxi convenientto take ;to most places 4.Unless you speak ;you self;it'best;someone who can teanslate 5.which is best to travel by

6.give her some suggestions 7.is the most expensive;is 8.get a room with a kitchen

III.1~6 ADBABC

IV.1~5 DFCBE

Self Cheak and Reading

I.1.in which thousands of;take part in 2.find out; answers to; as soon as possible 3.According to; the most popular choice of job 4.continue singing;so that;provide berrer lives for 5.It seems ;work as 6.Quite a few;are willing to 7.hold on to;come true 8.On the one hand;onthe other hand 9.volunteer translators;translated;for

II.1.as soon as they can 2.provied;with 3.less realistic than 4.were ready to 5.in order that

III.1~5 CDBAC 6~10 CADDB IUnit8 l'll help clean up the city parks.

Secion

A

I.1.homeless 2.hunger 3.established 4.coach 5.sign

II.1.set up 2.think up 3.cheer;up 4.clean up 5.put off 6.put up

III.1.makes;happier 2.establish;learn 3.thinks up 4.to do 5.Do you

IV.1~6 DCCDCB

Section

B

I.1.deaf 2.fix 3.pleasure 4.coach 5.sign

II.1.ran out of 2.takes after 3.put up 4.call

III.1.takes after 2.spent on 3.similar to 4.repair 5.What did

IV.1~6 BAAABC

V.1~5 FGADC 6~7 EB

Self Check and Reading

I.1.fetch 2.pleasure 3.blind 4.imaging 5.specially 6.filled 7.carried 8.deaf 9.to shut 10.worked out

II.1.homeless 2.latei 3.easiest 4.hunger 5.pleasure 6.holding 7.clean 8.cheered 9.to set 10.interviewer

III.1~5 BDACC 6~10 BACAB

IV.1.yes,he was 2.by taking a little rubber. 3.Three 4. On december22,1988 5.He protected the forest and changed the world's ideas V.1~5 BCBAD 6~10 ACD期中综合练习

I.1~5 BDBCB 6~10 BDCBD 11~15 BDDCC 16~20 BACDD

II.1.owner 2.importance 3.were 4.helpful 5.funny 6.worride 7.younger 8.youself 9.friendship 10.chatting

III.1.Dong't laugh at the old people 2.His parents are very strict with him 3.Children have plenty of time to do their home work now 4.l'm getting along/on well with my classmates 5.Have you come up with a good idea?

IV.1.to do 2.to get 3.was allowed to 4.didn't use 5.can she

V.1~5 DBGCF VI.1~5 CDDBC 6~10 DADCC

VII.1~5 BDBDC 6~10 CCBAD

AB V.(One possible version 期末综合练习

(一)

I.1~5 CBBCB 6~10 BCCCB II.1.to learn 2.really 3.to watch 4.healthy 5.pronunciation 6.musicians 7.were 8.used 9.preferred 10.has been

III.1.home to 2.what else 3.stay away 4.head of 5.interstted in

IV.1.doesn't need 2.where would 3.has he 4.easy enough 5.not to

V.1~5 BAEDC

VI.1~5 ABADC 6~10 BACBD

VII.1~5 ADBDD 6.Yes 7.we can talk to them,play and go to the cinema with them 8.Because we can 't live alone in the world 9.some people always expect to make use of their friedns 10.Having a real good friend is better than having many friends 11.plant 12.across 13.banks 14.destroyed 15.changing

期末综合练习

(二)

I.1~5 BADBB 6~10 AABCA 11~15 CBACA 16~20 CBBDA

II.1 winner 2.relaxed 3.careful 4.fifth 5.peaceful 6.tired 7.himself 8.advertisements 9.quickly 10.lucky

III.1.camp up 2.came ture 3.no matter 4.so that 5.stay up IV.1.doesn't;or 2.How much 3.didn't it 4.prefer;to 5.be cleaned

V.1~5 EACDB

VI.1~5 DADCB 6~10 ABCDA

VII.1~5 FFTFT 6~10 DABBA 11~15 ACBCD change a lot when they grow 17.catch enough sunlight 18.face challenges in life 19.15 20.becoming real adults (略)

六下数学练习册答案 篇4

六下数学练习册答案

一、(10分) 21÷7=

32÷4=

9÷9=

40-5= 0×8=

14÷2=

9×3=

28÷4= 5÷1=

30÷5=

6×7=

36÷6= 7×7=

63÷9=

24÷4= 45÷5= 8×9=

64÷8=

18÷2= 9×6=

二、 填一填。(25分)

1、先把口诀填完整,再写出两道算式。

二(

)十八

)四十二

2、 傍晚,面向太阳。前面是(

)方,后面是(

)方,左 面是(

)方,右面是(

)方。

3、 (

)只小鸟有12条腿。□○□=□(只)

(

)只青蛙有12条腿。□○□=□(只)

4、正方形和长方形的角都是(

)角。比它小的角叫(

)角, 比它大的角叫(

)角。

5、填□。

7×□=56

□×6=42

□×□=36 □÷□=7

6×3=6×4-□

4×7>□×7 6. 根据提示语,在括号里写出他们的家。

小明家在学校的北面;小亮家在学校的东面;学校的南面是小红家;从小明 家先向南走,再向西走是小立家。

(

)家

)家

)家

)家

三、涂一涂,连一连。(8分)

1、

小红

小军

2、从茶叶筒的上面、侧面和前面观察,看到的是什么图形,你能用线 连一连吗?

前面

上面

侧面

3、下列事件哪些一定发生,哪些可能发生,哪些不可能发生?连一连。 早晨,太阳从东方升起。

可能发生 明天下大雪。

一定发生 北极星在天空的南方。

不可能发生

四、 算一算。(12分)

4×9+28

78―(85-36)

28÷4-3

52+4×6

72÷8+1

9×9-70

五、 分一分,数一数,填一填。(10分) 形状

个数

○●●●□■▣▣▢▣■○ ■□□●○○●▢▣■□● 颜色

个数

六、 解决问题。(32分)

1、

2、

●的个数是○的□倍。□○□=□(厘米)

□○□=□

3.装橘子。

妈妈买来一些橘子,如果每篮装6个,可以 装6篮。

⑴妈妈一共买来多少个橘子?

⑵如果每篮装9个,需要几个篮子?

4、逛超市。

10元

5元

9元

3元

(1) 20元钱能买几个玩具熊?

(2) 小红有15元钱,买2把玩具枪,够吗?

(3) 买一辆坦克和7块汉堡包一共要花多少钱?

2本8元

(4) 小青拿20元钱,买了一本书,应找回多少钱?

九年级上册数学配套练习册答案沪教版 篇5

基础知识

1、2、3、4、5、

CABBA

6、7;3

7、7/4或5/4

8、±3

9、3

10、1;-3

11、7或3

12、0

能力提升

(2)1/3或-1

14、根据题意得x₁+x₂=-5/2,x₁x₂=-1/2

(1)3

(2)-29/2

15、由Δ=(4k+1)²-4×2×(2k²-1)

=16k²+8k+1-16k²+8

=8k+9

即(1)当k>-9/8时,Δ>0,即方程有两个不相等的实数根

(2)当k=-9/8时,Δ=0,即方程有两个相等的实数根

(3)当k<-9/8时,Δ<0,即方程没有实数根。

16、∵a²-10a+21=0,

∴(a-3)(a-7)=0,

∴a₁=3,a₂=7,

∵三角形的两边长分别为3cm和7cm,第三边长为acm,而3+3<7,

∴a=7,

∴此三角形的周长=7+7+3=17(cm)

探索研究

17、(1)设其中一个正方形的边长为xcm,则另一个正方形的边长为(5-x)cm,

依题意列方程得x²+(5-x)²=17,

整理得:x²-5x+4=0,(x-4)(x-1)=0,

解方程得x₁=1,x₂=4,

1×4=4cm,20-4=16cm

或4×4=16cm,20-16=4cm

因此这段铁丝剪成两段后的长度分别是4cm、16cm。

(2)两个正方形的面积之和不可能等于12cm²。

理由:设两个正方形的面积和为y,

∵y=12>0,

∴当x=5/2时,y的最小值=12.5>12,

∴两个正方形的面积之和不可能等于12cm²;

(另解:由(1)可知x²+(5-x)2=12,化简后得2x²-10x+13=0,

∵△=(-10)²-4×2×13=-4<0,

∴方程无实数解;

所以两个正方形的面积之和不可能等于12cm²)。

六下数学练习册答案(推荐 篇6

第6页答案

1、(1)×(2)√(3)√(4)×2、70,95,55,65。 3、306÷360=85%……八五折4、2800—2800×85%=420(元)儿童书店比较便宜。 第7页答案 1、360×80%=288(元)440×75%=330(元)2100×88%=1848(元)

2、(1)5×65%=3.25(元)3.8×65%=2.47(元)6×65%=3.9(元)(2)10÷3.25≈3(袋)10÷3.9≈2(袋)10÷2.47≈4(袋)

买法很多种,分为买一种蛋糕,两种蛋糕,三种蛋糕,本处略。

3、5800×80%×90%=4176(元) 第8页答案 1、1500×80%=1200(元)900×80%=720(元)580×80%=464(元)

2、4850—4850×90%=485(元)

3、(1)45×96%=43.2(万元)=432000(元)(2)432000+432000×1.5%=438480(元)

4、赔了。 第9页答案

1、(1)85%x,1.85x(2)75%x,0.25x2、30,20

3、X+70%X=510X=30070%X=210 答:白兔养了30只,黑兔210只。 4、24÷(1—20%)=30(只)30×20%=6(只)答:白兔30只,黑兔6只。

5、126÷(1+80%)=70(千瓦时)80%×70=56(千瓦时)

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