当前位置:文档之家› 2018年美国“数学大联盟杯赛”(中国赛区)初赛三年级试卷(1)

2018年美国“数学大联盟杯赛”(中国赛区)初赛三年级试卷(1)

2018年美国“数学大联盟杯赛”(中国赛区)初赛三年级试卷(1)
2018年美国“数学大联盟杯赛”(中国赛区)初赛三年级试卷(1)

2017-2018年度美国“数学大联盟杯赛”(中国赛区)初赛

(三年级)

(初赛时间:2017年11月26日,考试时间90分钟,总分200分)

学生诚信协议:考试期间,我确定没有就所涉及的问题或结论,与任何人、用任何方式交流或讨论,

我确定我所填写的答案均为我个人独立完成的成果,否则愿接受本次成绩无效的处罚。

请在装订线内签名表示你同意遵守以上规定。

考前注意事项:

1. 本试卷是三年级试卷,请确保和你的参赛年级一致;

2. 本试卷共4页(正反面都有试题),请检查是否有空白页,页数是否齐全;

3. 请确保你已经拿到以下材料:

本试卷(共4页,正反面都有试题)、答题卡、答题卡使用说明、英文词汇手册、草稿纸。考试完毕,请务必将英文词汇手册带回家,上面有如何查询初赛成绩、及如何参加复赛的说明。其他材料均不能带走,请留在原地。

选择题:每小题5分,答对加5分,答错不扣分,共200分,答案请填涂在答题卡上。

1. 5 + 6 + 7 + 1825 + 175 =

A) 2015 B) 2016 C) 2017 D) 2018

2.The sum of 2018 and ? is an even number.

A) 222 B) 223 C) 225 D) 227

3.John and Jill have $92 in total. John has three times as much money as Jill. How much

money does John have?

A) $60 B) $63 C) $66 D) $69

4.Tom is a basketball lover! On his book, he wrote the phrase “ILOVENBA” 100 times.

What is the 500th letter he wrote?

A) L B) B C) V D) N

5.An 8 by 25 rectangle has the same area as a rectangle with dimensions

A) 4 by 50 B) 6 by 25 C) 10 by 22 D) 12 by 15

6.What is the positive difference between the sum of the first 100 positive integers and the

sum of the next 50 positive integers?

A) 1000 B) 1225 C) 2025 D) 5050

7.You have a ten-foot pole that needs to be cut into ten equal pieces. If it takes ten seconds

to make each cut, how many seconds will the job take?

A) 110 B) 100 C) 95 D) 90

8.Amy rounded 2018 to the nearest tens. Ben rounded 2018 to the nearest hundreds. The

sum of their two numbers is

A) 4000 B) 4016 C) 4020 D) 4040 9.Which of the following pairs of numbers has the greatest least common multiple?

A) 5,6 B) 6,8 C) 8,12 D) 10,20

10.For every 2 pencils Dan bought, he also bought 5 pens. If he bought 10 pencils, how many

pens did he buy?

A) 25 B) 50 C) 10 D) 13

11.Twenty days after Thursday is

A) Monday B) Tuesday C) Wednesday D) Thursday

12.Of the following, ? angle has the least degree-measure.

A) an obtuse B) an acute C) a right D) a straight

13.Every student in my class shouted out a whole number in turn. The number the first

student shouted out was 1. Then each student after the first shouted out a number that is 3 more than the number the previous student did. Which number below is a possible number shouted out by one of the students?

A) 101 B) 102 C) 103 D) 104

14.A boy bought a baseball and a bat, paying $1.25 for both items. If the ball cost 25 cents

more than the bat, how much did the ball cost?

A) $1.00 B) $0.75 C) $0.55 D) $0.50

15.2 hours + ? minutes + 40 seconds = 7600 seconds

A) 5 B) 6 C) 10 D) 30

16.In the figure on the right, please put digits 1-7 in the seven

circles so that the three digits in every straight line add up

to 12. What is the digit in the middle circle?

A) 3 B) 4 C) 5 D) 6

17.If 5 adults ate 20 apples each and 3 children ate 12 apples in total, what is the average

number of apples that each person ate?

A) 12 B) 14 C) 15 D) 16

18.What is the perimeter of the figure on the right? Note: All

interior angles in the figure are right angles or 270°.

A) 100 B) 110

C) 120 D) 160

19.Thirty people are waiting in line to buy pizza. There are 10 people

in front of Andy. Susan is the last person in the line. How many

people are between Andy and Susan?

A) 18 B) 19

C) 20 D) 21

20.Thirty-nine hours after 9:00 AM is

A) 1:00 AM B) 12:00 PM C) 8:00 PM D) 12:00 AM

21.200 + 400 + 600 + 800 = (1 + 2 + 3 + 4) ×?

A) 2 B) 20 C) 200 D) 2000

22.11…11 (the number consisting of 2016 1’s) is not a mult iple of

A) 11 B) 111 C) 1111 D) 11111

23.The average of two thousands and two millions is

A) 10000 B) 1000000 C) 1001000 D) 1111000

24.A triangle has the same area as a square. If the length of a base of the triangle is the same

as the side-length of the square, and the height of the triangle to the base is 4, what is the

area of the square?

A) 1/2 B) 2 C) 4 D) 8

25.When V olta found a field in the shape of an isosceles triangle, she was so

excited that she ran a lap around all three sides. Two sides of the field have

lengths of 505 m each, and the third side has a whole-number length.

What is the greatest possible distance that V olta might have run in one lap?

A) 2016 B) 2017 C) 2018 D) 2019

26.25 ×66 = 75 ×?

A) 22 B) 44 C) 16 D) 33

27.The number that has an odd number of whole number divisors is

A) 15 B) 16 C) 17 D) 18

28.In a sequence of 8 numbers, the average of the 8 terms is 15. If the average of the first

three terms is 16 and the average of the next two terms is 15, what is the average of the

last three terms?

A) 12 B) 13 C) 14 D) 15

29.All years between 2000 and 2050 that are divisible by 4 are leap years.

No other years between 2000 and 2050 are leap years. How many days

are there all together in the 17 years from 2010 to 2026?

A) 6029 B) 6030 C) 5018 D) 5019

30.The sum of the hundreds digit and the tens digit of 2357 is

A) 5 B) 8 C) 10 D) 12

31.Which of the expressions below has the greatest value of (quotient × remainder)?

A) 27 ÷ 4 B) 47 ÷ 6

C) 57 ÷ 8 D) 87 ÷ 12

32.I have some dimes and nickels, and together these coins are worth $3. If I replace every

nickel with a quarter, I will have $5. How many dimes do I have?

A) 10 B) 15 C) 20 D) 25

33.I am a lovely cat. When I multiply the digits of a whole number

and the product I get is 9, I put that whole number on my list of

favorite numbers. Of the whole numbers from 1000 to 9999, how

many would I put on my list of favorite numbers?

A) 5 B) 10 C) 15 D) 20

34.The sum of the tens digit and the units digit of the sum 1 + 12 + 123 + 12345

+ … + 123456789 is

A) 4 B) 5 C) 6 D) 7

35.The product of all prime numbers between 1 and 10 is

A) 210 B) 105

C) 1890 D) none of the above

36.What is the average of 12, 14, 16, and 18?

A) 13 B) 14 C) 15 D) 16

37.When Jon shouts out a whole number, Al shouts out the product of

its digits, Barb shouts out the product of the digits of the number Al

shouted out, and Cy shouts out the product of the digits of the

number Barb shouted out. When Cy shouts out 18, what number

might Jon have shouted out?

A) 789 B) 799 C) 899 D) 999

38.Each big box contains 3 medium boxes, each medium box contains

2 small boxes, and each small box contains 5 apples. How many big

boxes are necessary for 1200 apples?

A) 30 B) 40 C) 50 D) 60

39.Eighteen years from now, my age will be 4 more than twice my current

age. My age now is

A) 12 B) 14 C) 16 D) 18

40.Each time Wanda waved her wand, 4 more stars appeared on her

dress (which started with no stars). After several waves, Wanda

multiplied the total number of stars then on her dress by the

number of times she had waved her wand. This product cannot be

A) 144 B) 256 C) 364 D) 676

2018年高三数学试卷

2018年高考数学试卷(文科) 一、选择题(共10小题,每小题5分,满分50分) 1.(5分)设全集U={x∈R|x>0},函数f(x)=的定义域为A,则?U A为()A.(0,e] B.(0,e) C.(e,+∞)D.[e,+∞) 2.(5分)设复数z满足(1+i)z=﹣2i,i为虚数单位,则z=() A.﹣1+i B.﹣1﹣i C.1+i D.1﹣i 3.(5分)已知A(1,﹣2),B(4,2),则与反方向的单位向量为()A.(﹣,)B.(,﹣)C.(﹣,﹣)D.(,) 4.(5分)若m=0.52,n=20.5,p=log20.5,则() A.n>m>p B.n>p>m C.m>n>p D.p>n>m 5.(5分)执行如图所示的程序框图,输出n的值为() A.19 B.20 C.21 D.22 6.(5分)已知p:x≥k,q:(x﹣1)(x+2)>0,若p是q的充分不必要条件,则实数k的取值范围是() A.(﹣∞,﹣2)B.[﹣2,+∞) C.(1,+∞)D.[1,+∞) 7.(5分)一个总体中有600个个体,随机编号为001,002,…,600,利用系统抽样方法抽取容量为24的一个样本,总体分组后在第一组随机抽得的编号为006,则在编号为051~125之间抽得的编号为() A.056,080,104 B.054,078,102 C.054,079,104 D.056,081,106 8.(5分)若直线x=π和x=π是函数y=sin(ωx+φ)(ω>0)图象的两条相邻对称轴,则φ的一个可能取值为() A.B.C.D.

9.(5分)如果实数x,y满足约束条件,则z=的最大值为()A.B.C.2 D.3 10.(5分)函数f(x)=的图象与函数g(x)=log2(x+a)(a∈R)的图象恰有一个交点,则实数a的取值范围是() A.a>1 B.a≤﹣C.a≥1或a<﹣D.a>1或a≤﹣ 二、填空题(共5小题,每小题5分,满分25分) 11.(5分)已知直线l:x+y﹣4=0与坐标轴交于A、B两点,O为坐标原点,则经过O、A、B 三点的圆的标准方程为. 12.(5分)某几何体三视图如图所示,则该几何体的体积为. 13.(5分)在[0,a](a>0)上随机抽取一个实数x,若x满足<0的概率为,则实数a 的值为. 14.(5分)已知抛物线y2=2px(p>0)上的一点M(1,t)(t>0)到焦点的距离为5,双曲线﹣=1(a>0)的左顶点为A,若双曲线的一条渐近线与直线AM平行,则实数a的值为. 15.(5分)已知f(x),g(x)分别是定义在R上的偶函数和奇函数,且f(x)+g(x)=2x,若存在x0∈[1,2]使得等式af(x0)+g(2x0)=0成立,则实数a的取值范围是. 三、解答题(共6小题,满分75分) 16.(12分)已知向量=(sinx,﹣1),=(cosx,),函数f(x)=(+)?. (1)求函数f(x)的单调递增区间; (2)将函数f(x)的图象向左平移个单位得到函数g(x)的图象,在△ABC中,角A,B,

2018年小学一年级下册数学期末试卷集(完美编辑版)

小学一年级2018-2019学年第二学期下学期 一年级数学期末考试卷 题 号 一 二 三 四 五 六 总 分 得 分 一、填空。(40分。1—11题每空1分,其余两空1分。) 1、 ( )个十和( )个一是( ) ( ) 2、一个数从右边起,第一位是( )位,第二位是( )位,第三位是( )位。 3、一张50元可以换( )张10元,或者可以换( )张5元。 4、接着58,写出后面连续的四个数( )( )( )( )。 5、一个数由6个一,5个十组成,这个数是( )。 6、 32是( )位数,十位上的数是( ),个位上的数是( )。 7、与40相邻的两个数是( )和( )。 8、95分=( )角( )分 6元9角=( )角 9、100里面有( )个十,( )个一。 10、50比6大( ),比50多6的数是( ). 11、在○里填“<”、“=”或“>”。 53-9○45 63○66-30 45元○45角 57○75 5元7角○57角 100分○1元 12、把下面各数从小到大排列起来 。 18 35 92 76 55 ( )<( )<( )<( )<( ) 学校 班级 姓名 学号 装 订 线

13、找规律,再填空。 ①□□○□□○□□○□()()。 ② 11、22、33、()、()、()。 ③ 5连续加5: 5 10 ______ ④ 70连续减9: 70 61 ______ 二、看谁算得又对又快:(共14分) 65-7= 56+ 7 = 14-6= 98-70= 40+59= 48- 8= 2+34= 2+30= 40-30+50= 67-(27-2)= 50+27-9= 1元-3角= 7角+9角= 5角+2元3角= 三、判断. (5分) 1、一个数个位上是8,十位上是3,这个数是83。() 2、读数和写数都从高位起。() 3、最小的两位数是10 。() 4、八十三写作803。() 5、比20大得多,比100小的数是21 。() 四、看一看,选一选。(将正确的答案前的字母填在括号里,5分) 1、硬币的上下两个面是()。 A、长方形 B、正方形 C、圆形 D、无法确定 2、从30开始一个一个地数,数到40一共数了()个数。 A、9 B、10 C、11 D、12 3、3个一和5个十合起来是()。 A、35 B、53 C、31 D、40 4、有30颗珠子,每5颗穿一串,可以穿()串

2018年江苏高考数学试题与答案

绝密★启用前 2018年普通高等学校招生全国统一考试(江苏卷) 数学Ⅰ 注意事项 考生在答题前请认真阅读本注意事项及各题答题要求 1.本试卷共4页,均为非选择题 (第1题~第20题,共20题)。本卷满分为160分,考试时间为120分钟。 考试结束后,请将本试卷和答题卡一片交回。 2.答题前,请务必将自己的姓名、准考证号用0.5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置。 3.请认真核对监考员从答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符。学科@网 4.作答试题,必须用0.5毫米黑色墨水的签字笔在答题卡上的指定位置作答,在其他位置作答一律无效。5.如需作图,须用2B铅笔绘、写清楚,线条、符号等须加黑、加粗。 参考公式: 锥体的体积V 1 Sh,其中S是锥体的底面积,h是锥体的高.3 一、填空题:本大题共14小题,每小题5分,共计70分.请把答案填写在答题卡相应位 ..... . 置上. .. 1.已知集合A {0,1,2,8} ,B{1,1,6,8},那么A B▲. 2.若复数z满足iz 1 2i,其中i是虚数单位,则z的实部 为▲. 3.已知5位裁判给某运动员打出的分数的茎叶图如图所示,那么 这5位裁判打出的分数的平均数为▲.

4.一个算法的伪代码如图所示,执行此算法,最后输出的S的值为▲. 5.函数f(x) log2x 1的定义域为▲. 6.某兴趣小组 有2名男生和3名女生,现从中任选2名学生去参加活动,则恰好选中2名女生的概率 为 ▲. 7.已知函数y sin(2x )( )的图象关于直线x 对称,则的值 是▲. 2 2 3 8.在平面直角坐标系xOy中,若双曲线x2y21(a 0,b 0)的右焦点F(c,0) 到一条渐近 a2b2 线的距离为3c,则其离心率的值是▲. 2 cos x ,0 9.函数f(x)满足f(x4) f(x)(x R),且在区间(2,2]上,f(x) 2 1|,-2 |x 2 x 2, 则x 0, f(f(15))的值为▲.

2018年全国各地高考数学(理科试卷及答案)

2018年高考数学理科试卷(江苏卷) 数学Ⅰ 一、填空题:本大题共14小题,每小题5分,共计70分.请把答案填写在答题卡相应位......置上.. . 1.已知集合{}8,2,1,0=A ,{}8,6,1,1-=B ,那么=?B A . 2.若复数z 满足i z i 21+=?,其中i 是虚数单位,则z 的实部为 . 3.已知5位裁判给某运动员打出的分数的茎叶图如图所示,那么这5位裁判打出的分数的平均数为 . 4.一个算法的伪代码如图所示,执行此算法,最后输出的S 的值为 . 5.函数()1log 2-=x x f 的定义域为 .

6.某兴趣小组有2名男生和3名女生,现从中任选2名学生去参加活动,则恰好选中2名女生的概率为 . 7.已知函数()??? ??<<-+=22 2sin ππ ?x x y 的图象关于直线3π=x 对称,则?的值 是 . 8.在平面直角坐标系xOy 中,若双曲线()0,0122 22>>=-b a b y a x 的右焦点()0,c F 到一条 渐近线的距离为 c 2 3 ,则其离心率的值是 . 9.函数()x f 满足()()()R x x f x f ∈=+4,且在区间]2,2(-上,()??? ? ???≤<-+≤<=02,2120,2cos x x x x x f π, 则()()15f f 的值为 . 10.如图所示,正方体的棱长为2,以其所有面的中心为顶点的多面体的体积为 . 11.若函数()()R a ax x x f ∈+-=122 3 在()+∞,0内有且只有一个零点,则()x f 在[]1,1-上 的最大值与最小值的和为 .

2018年美国“数学大联盟杯赛”(中国赛区)初赛三年级试卷及答案

2017-2018年度美国“数学大联盟杯赛”(中国赛区)初赛 (三年级) (初赛时间:2017年11月26日,考试时间90分钟,总分200分) 学生诚信协议:考试期间,我确定没有就所涉及的问题或结论,与任何人、用任何方式交流或讨论, 我确定我所填写的答案均为我个人独立完成的成果,否则愿接受本次成绩无效的处罚。 请在装订线内签名表示你同意遵守以上规定。 考前注意事项: 1. 本试卷是三年级试卷,请确保和你的参赛年级一致; 2. 本试卷共4页(正反面都有试题),请检查是否有空白页,页数是否齐全; 3. 请确保你已经拿到以下材料: 本试卷(共4页,正反面都有试题)、答题卡、答题卡使用说明、英文词汇手册、草稿纸。考试完毕,请务必将英文词汇手册带回家,上面有如何查询初赛成绩、及如何参加复赛的说明。其他材料均不能带走,请留在原地。 选择题:每小题5分,答对加5分,答错不扣分,共200分,答案请填涂在答题卡上。 1. 5 + 6 + 7 + 1825 + 175 = A) 2015 B) 2016 C) 2017 D) 2018 2.The sum of 2018 and ? is an even number. A) 222 B) 223 C) 225 D) 227 3.John and Jill have $92 in total. John has three times as much money as Jill. How much money does John have? A) $60 B) $63 C) $66 D) $69 4.Tom is a basketball lover! On his book, he wrote the phrase “ILOVENBA” 100 times. What is the 500th letter he wrote? A) L B) B C) V D) N 5.An 8 by 25 rectangle has the same area as a rectangle with dimensions A) 4 by 50 B) 6 by 25 C) 10 by 22 D) 12 by 15 6.What is the positive difference between the sum of the first 100 positive integers and the sum of the next 50 positive integers? A) 1000 B) 1225 C) 2025 D) 5050 7.You have a ten-foot pole that needs to be cut into ten equal pieces. If it takes ten seconds to make each cut, how many seconds will the job take? A) 110 B) 100 C) 95 D) 90 8.Amy rounded 2018 to the nearest tens. Ben rounded 2018 to the nearest hundreds. The sum of their two numbers is A) 4000 B) 4016 C) 4020 D) 4040 9.Which of the following pairs of numbers has the greatest least common multiple? A) 5,6 B) 6,8 C) 8,12 D) 10,20 10.For every 2 pencils Dan bought, he also bought 5 pens. If he bought 10 pencils, how many pens did he buy? A) 25 B) 50 C) 10 D) 13 11.Twenty days after Thursday is A) Monday B) Tuesday C) Wednesday D) Thursday 12.Of the following, ? angle has the least degree-measure. A) an obtuse B) an acute C) a right D) a straight 13.Every student in my class shouted out a whole number in turn. The number the first student shouted out was 1. Then each student after the first shouted out a number that is 3 more than the number the previous student did. Which number below is a possible number shouted out by one of the students? A) 101 B) 102 C) 103 D) 104 14.A boy bought a baseball and a bat, paying $1.25 for both items. If the ball cost 25 cents more than the bat, how much did the ball cost? A) $1.00 B) $0.75 C) $0.55 D) $0.50 15.2 hours + ? minutes + 40 seconds = 7600 seconds A) 5 B) 6 C) 10 D) 30 16.In the figure on the right, please put digits 1-7 in the seven circles so that the three digits in every straight line add up to 12. What is the digit in the middle circle? A) 3 B) 4 C) 5 D) 6 17.If 5 adults ate 20 apples each and 3 children ate 12 apples in total, what is the average number of apples that each person ate? A) 12 B) 14 C) 15 D) 16 18.What is the perimeter of the figure on the right? Note: All interior angles in the figure are right angles or 270°. A) 100 B) 110 C) 120 D) 160 19.Thirty people are waiting in line to buy pizza. There are 10 people in front of Andy. Susan is the last person in the line. How many people are between Andy and Susan? A) 18 B) 19 C) 20 D) 21

2018年美国“数学大联盟杯赛”(中国赛区)初赛五年级试卷(1)

2017-2018年度美国“数学大联盟杯赛”(中国赛区)初赛 (五年级) (初赛时间:2017年11月26日,考试时间90分钟,总分200分) 学生诚信协议:考试期间,我确定没有就所涉及的问题或结论,与任何人、用任何方式交流或讨论, 我确定我所填写的答案均为我个人独立完成的成果,否则愿接受本次成绩无效的处罚。 请在装订线内签名表示你同意遵守以上规定。 考前注意事项: 1. 本试卷是五年级试卷,请确保和你的参赛年级一致; 2. 本试卷共4页(正反面都有试题),请检查是否有空白页,页数是否齐全; 3. 请确保你已经拿到以下材料: 本试卷(共4页,正反面都有试题)、答题卡、答题卡使用说明、英文词汇手册、 草稿纸。考试完毕,请务必将英文词汇手册带回家,上面有如何查询初赛成绩、 及如何参加复赛的说明。其他材料均不能带走,请留在原地。 选择题:每小题5分,答对加5分,答错不扣分,共200分,答案请填涂在答题卡上。 1. The smallest possible sum of two different prime numbers is A) 3 B) 4 C) 5 D) 6 2. The greatest common factor of two numbers is 3. The product of these two numbers must be divisible by A) 6 B) 9 C) 12 D) 18 3. The sum of 5 consecutive one-digit integers is at most A) 15 B) 25 C) 35 D) 45 4. How many two-digit multiples of 10 are also multiples of 12? A) 4 B) 3 C) 2 D) 1 5. I have read exactly 1 3 of the total number of chapters in my 120-page book. If each chapter has the same whole number of pages, then the total number of chapters I have left could be A) 16 B) 24 C) 32 D) 50 6. What is the greatest odd factor of 44 × 55 × 66? A) 36 B) 55 C) 35 × 55 D) 36 × 55 7. What is the sum of the factors of the prime number 2017? A) 2016 B) 2017 C) 2018 D) 2019 8. Lynn ran in 6 times as many races as the number of races she won. How many of her 126 races did Lynn not win? A) 21 B) 90 C) 96 D) 105 9. The least common multiple of 8 and 12 is the greatest common factor of 120 and A) 80 B) 124 C) 144 D) 180 10. January has the greatest possible number of Saturdays when January 1 occurs on any of the following days of the week except A) Thursday B) Friday C) Saturday D) Sunday 11. The number that is 10% of 1000 is 10 more than 10% of A) 90 B) 100 C) 900 D) 990 12. The sum of 16 fours has the same value as the product of ? fours. A) 2 B) 3 C) 4 D) 16 13. Of the following, which is the sum of two consecutive integers? A) 111 111 B) 222 222 C) 444 444 D) 888 888 14. Abe drove for 2 hours at 30 km/hr. and for 3 hours at 50 km/hr. What was Abe’s average speed over the 5 hours? A) 35 km/hr. B) 40 km/hr. C) 42 km/hr. D) 45 km/hr. 15. My broken watch runs twice as fast as it should. If my watch first broke at 6:15 P.M., what time was displayed on my watch 65 minutes later? A) 7:20 P.M. B) 7:25 P.M. C) 8:20 P.M. D) 8:25 P.M. 16. (2018 × 2017) + (2018 × 1) = A) 20172 B) 20182 C) 20183 D) (2018 + 2017)2 17. A prized bird lays 2, 3, or 4 eggs each day. If the bird laid 17 eggs in 1 week, on at most how many days that week did the bird lay exactly 2 eggs? A) 2 B) 3 C) 4 D) 5 18. Of the following, which could be the perimeter of a rectangle whose side-lengths, in cm, are prime numbers? A) 10 cm B) 22 cm C) 34 cm D) 58 cm 19. The average of all possible total values of a 4-coin stack of nickels and dimes (containing at least one of each coin) is A) 20¢ B) 30¢ C) 40¢ D) 60¢ 20. The diameter of Ann’s drum i s 40 cm more than the radius. What is half the circumference of the drum? A) 120π cm B) 80π cm C) 60π cm D) 40π cm 21. Of the following, which expression has the greatest number of factors that are multiples of 2018? A) 2018 × 12 B) 20182 C) 20192 D) 20192019 第1页,共4页 第2页,共4页

最新2018年一年级下册数学期末考试试卷

2018年一年级下册数学期末考试试卷 一、口算。(10分)(每小题0.5分) 9+8= 16-9= 30-20= 40+30= 50+6= 26-10= 28+30= 35-5= 13-4= 7+60= 53-30= 6-50= 9+60= 14-8= 5+7= 34-20= 6+20= 80-50= 64-40= 40+50= 二、填空。(26分)(1、2、3、5、8、10小题各2分,6、9小题各3分,4、7小题各4分) 1、接着五十八,写出后面连续的四个 数:、、、。 2、5元8角=()角26角=()元()角 3、①一个数由6个一,5个十组成,这个数是() ② 32里面包含()个十,()个一。 4、根据下面的图,在右边写出四个算式。 〇〇〇〇〇〇〇) 〇〇〇〇〇〇)5、看图写数。 ()() 6、看图列算式。 ① ② 朵= 7、在○里填上“>”“<”或“=”。 79○8243○29 48+9○48-956○56-8 8、找规律,再填空。 ①□□○□□○□□○□()()。 ?个 13个

②3、1、2、3、1、2、3、1、2、3、()、()。 9、根据要求填空。 10、按要求写出钟面上的时刻。 三、判断。(正确的在()里打“√”,错误的在()里打“×”。(5分) 1、一个数个位上是8,十位上是3,这个数是83。() 2、34读作:三十四。() 3、上、下楼梯时,要靠右行。() 4、最小的两位数是10。() 5、比20大得多,比100小的数是21。() 四、计算。(29分)(1-20小题各1分,21-26小题各1.5分) 27-10= 58-50 42+8= 50-9= 6+24= 35-5= 27+30= 75-40= 30+15= 56 -8= 72-30= 34+6= 75-7= 58-30= 40-8= 50+30= 70-20= 9+6= 14-6= 55+7= 50-40+6= 72+ 8-30= 45+9-30= 5+30-20= 20+46-6= 34-20+40= 五、数一数,填一填,画一画,再按要求回答问题。(10分) ☆的左边是(),右边是()。 ■的上面是()。 ◎在第()排第()个位置上。 把◇画在第四排第4个位置上。 1 2 3 4

2018年高考数学试题

2018年普通高等学校招生全国统一考试 (全国卷Ⅱ)理科试卷 本试卷共23题,共150分,共5页。考试结束后,将本试卷和答题卡一并交回。 注意事项:1、答题前,考试现将自己的姓名,准考证号填写清楚,将条形 码准确粘贴在条形码区域内 2、选择题必须使用2B 铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整,笔迹清楚。 3、请按照题号顺序在答题卡 各题目的答题区域内做答,超出答题区域书写的答案无效;在草稿纸、试卷上答题无效。 4、作图可先试用铅笔画出,确定后必须用黑色字迹的签字笔描黑。 5、保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。 一、 选择题:本题共12小题,每小题5分,共60分。 在每小题给出的四个选项中,只有一项是符合题目要求的。 1、1212i i +=- A 、4355i -- B 、4355i -+ C 、3455i -- D 3455 i -+ 2、已知集合(){}22,|3,,,A x y x y x Z y Z =+≤∈∈则A 中元素的个数为() A 、9 B 、8 C 、5 D4 3、函数 ()2x x e e f x x --=的图象大致是() x x

4、已知向量() ,1,1,2a b a a b a a b =?=--=满足则() A 、4 B 、3 C 、2 D 、0 5、双曲线()222210,0x y a b a b -=>> 则其渐近线方程为() A 、 y = B 、 y = C 、2 y x =± D y x = 6、在△ABC 中,cos 2C = ,BC=1,AC=5,则AB=( ) A 、 B C D 7、为计算11111123499100S =-+-+ +-,设计了右侧的程序框图,则空白框中应填入 A 、i=i+1 B 、i=i+2 C 、i=i+3 D 、i=i+4

2018年上学期小学一年级数学期中考试试卷

学班 :校学 2018年小学数学一年二期期中检测卷 (时量:40分钟满分:120分) 题次一二三四奖分题总分计分 一、填一填。(每空1分,共18分) 1.数学书的封面是()形。 线 2.一个两位数,个位上是5,十位上的数比个位上的数小3,这个数 是()。 3.由4个十和6个一组成的数是()。 订装4.与50相邻的两个数是()和()。 5.十个十个地数:50、60、70、()、()、()。 6.把10、16、61、9按从小到大的顺序排列。 ()<()<()<() 7.用做一个,数字“2”的对面是数字()。 8.最少用()个同样的小正方形才可以拼成一个大正方形。 9.在计数器上拨3个珠子,可以拨出的最大的两位数是(),拨出的最小的两位数是()。 10.有25个萝卜,10个装一筐,可以装满()筐,最少要用()个筐才能把萝卜全部装完。 二、算一算。(共42分)

1.直接写得数。(每小题1分,共16分) 18-9=6+8=40+6=3+10-7= 22-2=9+7=18-10=6+7-8= 12-3=17-6=7+7=45-5+8= 11-6=5+20=36-30=14-7+9=2.算一算.(每小题2分,共8分) 4元5角=()角2元5角+5角=()元 1元-6角=()角3角+8角=()元()角3.在括号里填入合适的数。(每小题2分,共6分) 7+()=13()-8=84+()=24 4.括号里最大能填几?(每小题2分,共6分) 50+()<5436-()>3013-()<5 5.在里填上“>”、“<”或“=”。(每小题2分,共6分) ○ 角3角6分 4011-83元6○ 13-2○5+642-○

2018年高考数学试卷1(理科)

2018年高考试卷理科数学卷 本试卷分选择题和非选择题两部分。全卷共5页,满分150分,考试时间120分钟。 第I 卷(共50分) 注意事项: 1.答题前,考生务必将自己的姓名、准考证号用黑色字迹的签字笔或钢笔填写在答题 纸上。 2.每小题选出答案后,用2B 铅笔把答题纸上对应题目的答案标号涂黑,如需改动, 用橡皮擦干净后,再选涂其他答案标号。不能答在试题卷上。 参考公式: 球的表面积公式 棱柱的体积公式 球的体积公式 其中S 表示棱柱的底面积,h 表示棱柱的高 343V R π= 棱台的体积公式 其中R 表示球的半径 11221()3 V h S S S S =++ 棱锥的体积公式 其中12,S S 分别表示棱台的上、下底面积, 13 V Sh = h 表示棱台的高 其中S 表示棱锥的底面积,h 表示棱锥的高 如果事件,A B 互斥,那么 一、选择题:本大题共10小题,每小题5分,共50分.在每小题给出的四个选项中,只有一项是符合题目要求的. 1.(原创)设函数,0,(),0, x x f x x x ?≥?=?-

2018年高考数学真题

2018年普通高等学校招生全国统一考试(卷) 数学Ⅰ 1. 已知集合{}8,2,1,0=A ,{}8,6,1,1-=B ,那么_____=B A I 2. 若复数z 满足i z i 21+=?,其中i 是虚数单位,则z 的实部为_____ 3. 已知5位裁判给某运动员打出的分数的茎叶图如图所示,那么这5位 裁判打出的分数的平均数为_____ 4. 一个算式的伪代码如图所示,执行此算法,最后输出的S 的值为______ 5. 函数1log )(2-=x x f 的定义域为______ 6. 某兴趣小组有2名男生和3名女生,现从中选2名学生去参加, 则恰好有2名女生的概率为_______ 7. 已知函数)22)(2sin(π?π?<<-+=x y 的图象关于直线3 π =x 对称,则?的值是______ 8. 在平面直角坐标系xOy 中.若双曲线0)b 0(122 22>>=-,a b y a x 的右焦点F(c ,0)到一 条渐近线的距离为 c 2 3 ,则其离心率的值是_____ 9. 函数f(x)满足f(x +4)=f(x)(x ∈R),且在区间]2,2(-上,??? ??? ?≤<-+≤<=,02,21 ,20,2cos )(x x x x x f π则))15((f f 的值为______ 10. 如图所示,正方体的棱长为2,以其所有面的中心为顶点的多面 体的体积为_______ 11. 若函数)(12)(2 3 R a ax x x f ∈+-=在),0(+∞有且只有一个 零点,则)(x f 在[-1,1]上的最大值与最小值的和为_______ 12. 在平面直角坐标系xOy 中,A 为直线l :x y 2=上在第一象限的点,B (5,0),以 8 99 9 011 (第3题) I ←1 S ←1 While I<6 I ←I+2 S ←2S End While Pnint S (第4题)

美国数学大联盟杯赛五年级试卷

2015-2016年度美国“数学大联盟杯赛”(中国赛区)初赛 (五年级) (初赛时间:2015年11月14日,考试时间90分钟,总分200分) 学生诚信协议:考试期间,我确定没有就所涉及的问题或结论,与任何人、用任何方式交流或讨论, 我确定以下的答案均为我个人独立完成的成果,否则愿接受本次成绩无效的处罚。 如果您同意遵守以上协议请在装订线内签名 选择题:每小题5分,答对加5分,答错不扣分,共200分,答案请填涂在答题卡上。 1. A 6 by 6 square has the same area as a 4 by ? rectangle. A) 3 B) 6 C) 8 D) 9 2.Every prime has exactly ? positive divisors. A) 1 B) 2 C) 3 D) 4 or more 3.If I answered 34 out of 40 questions on my math test correctly, I answered ? % of the questions correctly. A) 75 B) 80 C) 85 D) 90 4.120 ÷ 3 ÷ 4 × 12 = A) 1 B) 10 C) 12 D) 120 5.10 × 20 × 30 × 40 = 24 ×? A) 1000 B) 10 000 C) 100 000 D) 1000 000 6.One of my boxes contains 1 pencil and the others each contain 5 pencils. If there are 101 pencils in my boxes, how many boxes do I have? A) 19 B) 20 C) 21 D) 22 7.An electrical company imports 2016 light bulbs. Unfortunately, 25% of those are damaged. How many light bulbs are not damaged? A) 25 B) 504 C) 1512 D) 2016 8.50 × (16 + 24) is the square of A) -40 B) -4 C) 4 D) 80 9.Which of the following numbers has exactly 3 positive divisors? A) 49 B) 56 C) 69 D) 100 10.Ten people stand in a line. Counting from the left, Jerry stands at the 5th position. Counting from the right, which position is he at? A) 4 B) 5 C) 6 D) 7 11.On a teamwork project, Jack contributed 2/7 of the total amount of work, Jill contributed 1/4 of the work, Pat contributed 1/5 of the work, and Matt contributed the rest. Who contributed the most toward this project? A) Jack B) Jill C) Pat D) Matt 12.Which of the following numbers is a factor of 2016? A) 5 B) 11 C) 48 D) 99 13.2 × 4 × 8 × 16 × 32 × 64 = A) 210B) 215C) 221D) 2120 14.On a game show, Al won four times as much as Bob, and Bob won four times as much as Cy. If Al won $1536, how much did Al, Bob, and Cy win together? A) $96 B) $384 C) $1920 D) $2016 15.The sum of two composites cannot be A) odd B) even C) 11 D) 17 16.If a and b are positive integers such that a/b = 5/7, then a + b is A) 12 B) 24 C) 36 D) not able to be determined 17.What is the greatest odd factor of the number of hours in all the days of the year 2015? A) 3 B) 365 C) 1095 D) 3285 18.If the current month is February, what month will it be 1 199 999 months from now? A) January B) February C) March D) April 19.Two angles are complementary. One of these angles is 36° less than the other. What is the measure of the larger angle? A) 36°B) 54°C) 63°D) 72° 20.(The square root of 16) + (the cube root of 64) + (the 4th root of 256) = A) 12 B) 24 C) 32 D) 64 21.In ?ABC, m∠A–m∠B = m∠B–m∠C. What is the degree measure of ∠B? A) 30 B) 60 C) 90 D) 120 22.For every 3 math books I bought, I bought 2 biology books. I bought 55 books in all. How many of those are math books? A) 11 B) 22 C) 33 D) 44 23.John wrote a number whose digits consists entirely of 1s. This number was a composite number. His number could contain exactly ? 1s. A) 17 B) 19 C) 29 D) 32 24.Weird Town uses three types of currencies: Cons, Flegs, and Sels. If 3 Sels = 9 Cons and 2 Cons = 4 Flegs, then 5 Sels = ? Flegs. A) 12 B) 24 C) 30 D) 36 第1页,共4页

人教版2018年一年级数学试卷

2017-2018年度第二学期小学数学一年级期末检测卷 题号一二三四五六总分 得分 同学们,一个学期过去了,你一定长进不少,让我们好好检验一下自己吧! 一、我会填。(每空2分,共28分) 1、看图写数。 ( ) ( ) ( ) 2、我的试卷是()形。 3、一个两位数,十位上是 5 ,个位上 3 ,这个数是()。 4、按照从小到大的顺序数数,65前面的数是(),后面的数是()。 5、3角 = ()分 1元8角 =()角 6、找规律填数: 12 15 18 21 ( ) 27 30 ( )。 7、用做成一个,数字“2”的对面是数字“( )”。 8、按规律画出下一个图形:○○△○○△○○△○○△○。 9、一袋的价钱是 30元,一个的价钱是8元, 妈妈用一张,买了这两样东西,应找回元。

我跳了63个 我跳的比你少得多 我跳的最多 二、我能选 , 在合适的答案下面画“√”( 6 分) 1 、同学们参加一分钟跳绳比赛,表内的两位同学各跳了几个( 4 分) 2、每个盒子装8个,3个盒子能装完吗(2分) 能()不能() 三、我会算。(28分) 1、看谁算得快(8+8=16分) (1)17+9= 38-8= 70+13= 29-20= 32-8= 25+30= 65+5= 69+8= (2)18+50-7= 34+10+6= 58-40-9= 57-30+5= 2、在○里填上“>”、“<”或“=”。(12分) 23○32 47+4○50 89○90–1 9角9分○1元 5角+6角○1元 5元-4元○12角 四、我会数。(10分) △有( )个 □有( )个 70个 63个30个

2018年江苏省高考数学试题及全解

2018年江苏省高考数学试卷 一、填空题:本大题共14小题,每小题5分,共计70分.请把答案填写在答题卡相应位置上. 1.(5分)已知集合A={0,1,2,8},B={﹣1,1,6,8},那么A∩B=.2.(5分)若复数z满足i?z=1+2i,其中i是虚数单位,则z的实部为.3.(5分)已知5位裁判给某运动员打出的分数的茎叶图如图所示,那么这5位裁判打出的分数的平均数为. 4.(5分)一个算法的伪代码如图所示,执行此算法,最后输出的S的值为. 5.(5分)函数f(x)=的定义域为. 6.(5分)某兴趣小组有2名男生和3名女生,现从中任选2名学生去参加活动,则恰好选中2名女生的概率为. 7.(5分)已知函数y=sin(2x+φ)(﹣φ<)的图象关于直线x=对称,则φ的值是. 8.(5分)在平面直角坐标系xOy中,若双曲线﹣=1(a>0,b>0)的右 焦点F(c,0)到一条渐近线的距离为c,则其离心率的值是.9.(5分)函数f(x)满足f(x+4)=f(x)(x∈R),且在区间(﹣2,2]上,f

(x)=,则f(f(15))的值为. 10.(5分)如图所示,正方体的棱长为2,以其所有面的中心为顶点的多面体的体积为. 11.(5分)若函数f(x)=2x3﹣ax2+1(a∈R)在(0,+∞)内有且只有一个零点,则f(x)在[﹣1,1]上的最大值与最小值的和为. 12.(5分)在平面直角坐标系xOy中,A为直线l:y=2x上在第一象限内的点, B(5,0),以AB为直径的圆C与直线l交于另一点D.若=0,则点A的横坐标为. 13.(5分)在△ABC中,角A,B,C所对的边分别为a,b,c,∠ABC=120°,∠ABC的平分线交AC于点D,且BD=1,则4a+c的最小值为. 14.(5分)已知集合A={x|x=2n﹣1,n∈N*},B={x|x=2n,n∈N*}.将A∪B的所有元素从小到大依次排列构成一个数列{a n},记S n为数列{a n}的前n项和,则成立的n的最小值为. 使得S n>12a n +1 二、解答题:本大题共6小题,共计90分.请在答题卡指定区域内作答,解答时应写出文字说明、证明过程或演算步骤. 15.(14分)在平行六面体ABCD﹣A1B1C1D1中,AA1=AB,AB1⊥B1C1. 求证:(1)AB∥平面A1B1C; (2)平面ABB1A1⊥平面A1BC.

相关主题
文本预览
相关文档 最新文档