2017六年级数学计算竞赛卷
2017年第十六届“春蕾杯”六年级决赛数学竞赛试卷及答案解析
第 1 页 共 8 页2017年第十六届“春蕾杯”六年级决赛数学竞赛试卷一、基础题（每题6分，共60分）1．（6分）计算（每小题2分，共6分）①41.2×8.1+11×914+53.7×1.9＝ ； ②2017÷201720172018= ； ③9116+87112+83120+79130+⋯⋯+231380+191420= ．2．（6分）小明今年15岁，比妈妈小阳25岁．5年后，小明的年龄是妈妈年龄的 ．（用分数表示）3．（6分）一个半圆形纸片的周长是20.56厘米，它的直径是 厘米（π取3.14）．4．（6分）在前100个自然数中，能被2整除或能被3整除的数有 个．5．（6分）六年级1班有30多人，个子最高的小明发现，放学站队时无论是2人、还是3人或者4人站成一排，他都只能自己单独站在最后，没有人与他站一排．则六年级1班共有 人．6．（6分）有一个最简分数a ，满足13＜a ＜12，且a 的分母比50大，比60小．a 表示的最简分数是 ． （写出两个符合条件的分数即可）7．（6分）一个分数的分子减少25%，分母增加25%，则这个新的分数比原来的分数减少了（用百分数表示）．8．（6分）有一个正整数，加上100后，它的结果是一个完全平方数；加上168后，它的结果也是一个完全平方数，那么这个正整数是 ．9．（6分）“春蕾杯”全国思维邀请赛的初赛结束了，数学老师打电话向小明送上入围决赛的好消息．已知老师拨打的电话号码是27433619，且这个电话号码恰好是4个连续质数的乘积．这四个质数的总和是 ．10．（6分）甲、乙、丙三个杯中各盛有10克，20克，30克水．把A 种浓度的盐水10克倒入甲杯中，混合后取出10克倒入乙杯，再混合后又从乙杯中取出10克倒入丙杯中，现在丙杯中的盐水浓度为2%，A 种盐水浓度是 ．（用百分数表示）二、提高题（每题6分，共30分）11．（6分）把分母是4的全部最简分数从小到大排成一列，排在第2017个的分数是多少？12．（6分）一艘轮船从甲码头顺流而下到乙码头，然后原路返回，顺流时速度为每小时30。
加拿大国家中小学数学竞赛( kangaroo math 袋鼠竞赛)2017年五六年级(含答案)
I N T ER N A T I ON A L CO N T E S T-GA M EM A TH KA N GA RO OC A N A DA, 2017INSTRUCTIONSGRADE 5-61.You have 75 minutes to solve 30 multiple choice problems. For each problem, circle onlyone of the proposed five choices. If you circle more than one choice, your response will be marked as wrong.2.Record your answers in the response form. Remember that this is the only sheet that ismarked, so make sure you have all your answers transferred here by the end of the contest.3.The problems are arranged in three groups. A correct answer of the first 10 problems isworth 3 points. A correct answer of problems 11-20 is worth 4 points. A correct answer of problems 21-30 is worth 5 points. For each incorrect answer, one point is deducted from your score. Each unanswered question is worth 0 points. To avoid negative scores, you start from 30 points. The maximum score possible is 150.4.Calculators and graph paper are not permitted. You are allowed to use rough paper for draftwork.5.The figures are not drawn to scale. They should be used only for illustration.6.Remember, you have about 2-3 minutes for each problem; hence, if a problem appears tobe too difficult, save it for later and move on to the other problems.7.At the end of the allotted time, please submit the response form to the contest supervisor.Please do not forget to pick up your Certificate of Participation!Good luck! Canadian Math Kangaroo Contest team2017 CMKC locations: Algoma University; Bishop's University; Brandon University; Brock University; Carlton University; Concordia University; Concordia University of Edmonton; Coquitlam City Library; Dalhousie University; Evergreen Park School; F.H. Sherman Recreation & Learning Centre; GAD Elementary School; Grande Prairie Regional College; Humber College; Lakehead University (Orillia and Thunder Bay); Laurentian University; MacEwan University; Memorial University of Newfoundland; Mount Allison University; Mount Royal University; Nipissing University; St. Mary’s University (Calgary); St. Peter’s College; The Renert School at Royal Vista; Trent University; University of Alberta-Augustana Campus; University of British Columbia (Okanagan); University of Guelph; University of Lethbridge; University of New Brunswick; University of Prince Edward Island; University of Quebec at Chicoutimi; University of Quebec at Rimouski; University of Regina; University of Toronto Mississauga; University of Toronto Scarborough; University of Toronto St. George; University of Windsor; The University of Western Ontario; University of Winnipeg; Vancouver Island University; Walter Murray Collegiate, Wilfrid Laurier University; YES Education Centre; York University; Yukon College.2017 CMKC supporters: Laurentian University; Canadian Mathematical Society; IEEE; PIMS.Canadian Math Kangaroo ContestPart A: Each correct answer is worth 3 points1.A fly has 6 legs, a spider has 8 legs. Together, 3 flies and 2 spiders have as many legs as 9 chickens andseveral cats. How many cats are there?(A) 2 cats (B) 3 cats (C) 4 cats (D) 5 cats (E) 6 cats2.Alice has 4 pieces of this shape: . Which picture can she not make from these four pieces?(A) (B) (C)(D) (E)3.Kalle knows that 1111 × 1111 = 1234321. What is the answer of 1111 × 2222?(A) 3456543 (B) 2346642 (C)2457642 (D) 2468642 (E) 43212344.There are 10 islands and 12 bridges, as depicted in the figure. All bridgesare open for traffic right now. What is the smallest number of bridges thatmust be closed in order to stop the traffic between A and B?(A) 1 (B) 2 (C) 3 (D) 4 (E) 55.Martin wants to colour the squares of the rectangle so that 1/3 of allsquares are blue and half of all squares are yellow. The rest of the squaresare to be coloured red.How many squares will he colour red?(A) 1 (B) 2 (C) 3 (D) 4 (E) 56.When the car wheels make one full rotation the car moves forward by about 1.8 meters. Approximatelyhow many kilometres will the car move forward after 10,000 full rotations of the wheels?(A) 1.8 (B) 18 (C) 180 (D) 1 800 (E) 18 0007.There are 32 students in Mrs. Vicky’s class. Part of the students took one pencil each from the box withpencils on the teacher’s desk. Then a third of the remaining students took 3 pencils each, and there were no more pencils left in the box. How many pencils were there in the box at first?(A) 16 (B) 24 (C) 32 (D) 43 (E) 648.Three rhinoceroses Jane, Kate and Lynn go for a walk: Jane first, Kate in the middle, and Lynn – last. Janeweighs 500 kg more than Kate. Kate weighs 1000 kg less than Lynn. Which of the following pictures may show Jane, Kate and Lynn in the order they walked?(A) (B)(C) (D)(E)9.Peter and Nick are both working on "Kangaroo" contest problems. For every two problems that Petersolves, Nick manages to solve three problems. In total, the boys solved 30 problems. How many problems did Nick solve more than Peter?(A) 5 (B) 6 (C) 7 (D) 8 (E) 910.Bob folded a piece of paper, used a hole puncher and punched exactly one hole in the folded paper.Then, he unfolded the piece of paper, which looked as shown below.Which of the following pictures shows the lines along which Bob folded the piece of paper?(A) (B) (C) (D) (E)Part B: Each correct answer is worth 4 points11.A special die has a number on each of its six faces. The sums of the numbers on opposite faces are all equal. Five of the numbers are 5, 6, 9, 11 and 14. What number is on the sixth face? (A) 4 (B) 7 (C) 8 (D) 13 (E) 15 12.Tom wrote all the numbers from 1 to 20 in a row and obtained the 31‐digit number1234567891011121314151617181920.Then he deleted 24 of the 31 digits, so that the remaining number was as large as possible. Which number was it? (A) 9671819 (B) 9567892 (C) 9781920 (D) 9912345 (E) 981819213.Peter went hiking in the mountains for 5 days. He started on Monday and his last trip was on Friday. Each day he walked 2km more than the day before. The total distance he walked during the five days was 70km. What distance did Peter walk on Thursday? (A) 12 km (B) 13 km (C) 14 km (D) 15 km (E) 16 km14.In a chocolate store, one chocolate costs $3. One day the store had a deal: “Buy two and get a third one free” and Adam decided to take 49 chocolates. How much did he pay for the chocolates? (A) $75 (B) $98 (C) $99 (D) $102 (E) $14715.Eight kangaroos stood in a line as shown in the diagram.At some point, two kangaroos standing side by side and facing each other exchanged places by jumping past each other. This was repeated until no further jumps were possible. How many exchanges were made? (A) 2 (B) 10 (C) 12 (D) 13 (E) 1616.The Modern Furniture store is selling sofas, loveseats, and chairs made from identical modular pieces as shown in the picture. Including the armrests, the width of the sofa is 220 cm and the width of the loveseat is 160 cm.What is the width of the chair? (A) 60 cm (B) 80 cm (C) 90 cm(D) 100 cm(E) 120 cmsofa loveseatchair220 cm160cm17.There are five padlocks and 5 keys – one for each of them (see the figure). The number code on each key has been modified into a letter code on the corresponding padlock. Equal digits have been replaced by the same letter, and different digits – by different letters. What is the number code on the fifth key?(A) 382(B) 282 (C) 284 (D) 823 (E) 82418.Boris has an amount of money and three magic wands that he can use only once. Wand A adds $1. Wand S subtracts $1. Wand D doubles the amount. In which order must he use these wands to obtain the largest amount of money? (A) DAS (B) ASD (C) DSA (D) ADS (E) SAD19.A vase weighs 600 g when one third of it is filled with water. The same vase weighs 800 g when two thirds of it are filled with water. What is the weight of the vase when it is empty? (A) 100 g (B) 200 g (C) 300 g (D) 400 g (E) 500 g20.Rafael has three squares. The first one has side length 2 cm. The second one has side length 4 cm and a vertex is placed in the centre of the first square. The last one has side length 6 cm and a vertex is placed in the centre of the second square, as shown in the picture. What is the area of the figure? (A) 32 cm 2 (B) 51 cm 2 (C) 27 cm 2 (D) 16 cm 2 (E) 6 cm 2Part C: Each correct answer is worth 5 points21.The natural numbers are arranged in the form of a triangle: 1 is in the first row, 2 and 3 are in the second row, 4, 5 and 6 are in the third row, and so on. What is the sum of the numbers written in the 10‐th row?(A) 490(B) 495 (C) 500(D) 505 (E) 5101 2 3 456.. .22.There are eight balls numbered with the numbers 40, 80, 100, 101, 190, 200, 260 and 292 in a bag.Martina takes four balls out of the bag and calculates the sum of the numbers on these balls. It appears that this sum is half of the sum of the numbers on the balls that remain in the bag. What is the greatest number written on the balls taken out?(A) 101 (B) 200 (C) 260 (D) 190 (E) 29223.The structure on the figure is made of unit cubes glued together. Morten wants toput it into a rectangular box. What are the dimensions (length, width and height)of the smallest box he can use?(A) 3 × 3 × 4 (B) 3 × 5 × 5 (C) 3 × 4 × 5 (D) 4 × 4 × 4 (E) 4 × 4 × 524.Four players scored goals in a handball game. All of them scored a different number of goals. One of theplayers, Mike, scored the least number of goals. The other three players scored 20 goals in total. What is the largest number of goals Mike could have scored?(A) 2 (B) 3 (C) 4 (D) 5 (E) 625.Ala likes even numbers, Beata likes numbers divisible by 3, Celina likes numbers divisible by 5. Each ofthese three girls went separately to a basket containing 8 balls with numbers written on them, and took all the balls with numbers she liked. It turned out that Ala collected balls with numbers 32 and 52, Beata ‐ 24,33 and 45, Celina ‐ 20, 25 and 35. In what order did the girls approach the basket?(A) Ala, Celina, Beata (B) Celina, Beata, Ala (C) Beata, Ala, Celina(D) Beata, Celina, Ala (E) Celina, Ala, Beata26.The picture of a kangaroo in the first (leftmost) triangle was reflected across the dotted lines, as in mirrors.The first two reflections are shown.What does the reflection look like in the shaded triangle?(A) (B) (C) (D) (E)27.The numbers 1, 2, 3, 4, and 5 must be written in the five cells in the figure, respecting the following rules:-If a number is just below another number, it must be greater.-If a number is just to the right of another number, it must be greater.In how many ways can this be done?(A) 3 (B) 4 (C) 5 (D) 6 (E) 828.John wrote a natural number in each of the four boxes in the bottom row of the diagram. Then he wrote ineach of the other boxes the sum of the two numbers in the boxes immediately underneath. What is the largest number of odd numbers that could appear in the completed diagram?(A) 4 (B) 5 (C) 6 (D) 7 (E) 829.Julia has four pencils of different colours and wants to use some or all of them to paint the map of anisland divided into four countries, as in the picture. Any two countries with a common border must be coloured differently on the map. How many different colourings of this map are possible? (Twocolourings are considered different if at least one of the countries is coloured differently).(A) 12 (B) 18 (C) 24 (D) 36 (E) 4830.A bar consists of two grey cubes and one white cube glued together as shown in the figure.Which cube can be built from nine such bars?(A) (B) (C) (D) (E)International Contest-GameMath Kangaroo Canada, 2017Answer KeyGrade 5-61 A B C D E 11 A B C D E21 A B C D E2 A B C D E12 A B C D E 22 A B C D E3 A B C D E 13 A B C D E23 A B C D E4 A B C D E 14 A B C D E 24 A B C D E5 A B C D E 15 A B C D E 25 A B C D E6 A B C D E 16 A B C D E 26 A B C D E7 A B C D E 17 A B C D E 27 A B C D E8 A B C D E 18 A B C D E 28 A B C D E9 A B C D E 19 A B C D E 29 A B C D E10 A B C D E 20 A B C D E 30 A B C D E。
小学数学六年级下册竞赛试题附完整答案(全优)
小学数学六年级下册竞赛试题一.(共8题，共16分)1.在-3、-0.5、0、-0.1这四个数中，最小的是（）。
A.-3B.-0.5C.0D.-0.12.点A为数轴上-1的点，将点A沿数轴向左移动2个单位长度到达点B，则点B表示的数为（）。
A.-3B.3C.1D.1或-33.小明家六月份用电180度，开展节约用电后，七月份用电120度，比六月份用电节约了百分之几？正确的列式为（）。
A.120÷180×100%B.（180-120）÷180×100%C.180÷120×100%D.（180-120）÷120×100%4.某商场将运动衣按进价的50%加价后，写上“大酬宾，八折优惠”，结果每件运动衣仍获利20元，运动衣的进价是（）元。
A.110B.120C.130D.1005.一件衣服先按获取利润40元销售，后将利润降低到25元出售，现在的利润是（）。
A.-25元B.+15元C.-40元D.+25元6.张远按下边的利率在银行存了10000元，到期算得税前的利息共612元，他存了（）年。
A.五B.三C.二D.一7.将一个圆柱体削制成一个圆锥体，削去部分的体积是圆柱体积的（）。
A. B. C.2倍 D.不能确定8.在比例里,两个外项互为倒数,如果一个外项是1.6,那么另一个外项是（）。
A.6.1B.1.6C.135D.二.(共8题，共16分)1.表面积相等的长方形和正方体，它们的体积也相等。
（）2.一件工作，甲单独完成于乙单独完成所用的时间比是5:6，那么他们的工作效率比是6:5。
（）3.正方体的棱长和体积成正比例。
（）4.比例由两项组成，分别叫做前项和后项。
（）5.把一个正方形按3∶1放大，它的面积扩大到原来的3倍。
（）6.从侧面看到的是圆形。
（）7.圆柱的体积比与它等底等高的圆锥大2倍。
（）8.5不是正数，因为5前面没有“+” 。
六年级数学计算竞赛试题(二套)
六年级数学计算竞赛试题(二套)目录：六年级数学计算竞赛试题一六年级数学计算题每日一练二六年级数学计算竞赛试题一班级 姓名 得分第一部分：必做题一、直接写出得数.(24分)35×12= 1÷23= 45÷8= 7×27＝ 38×12= 15×1625= 14－15= 13＋14＝ 63÷0.7= 26×1312= 4514×2115= 2.4×50=3－1.95= 17.5÷6= 26.26÷26= 0.375 ×8=32×61×109＝ 25.043+= 3×31÷3×31＝ 21÷60%=1－54÷54＝ 8183⨯÷= 4.2÷15 = 1.25×0.7×8=二、智力大闯关，在括号里填上适当的数.（10分）（1）54，52，51，（ ），201，（ ）（2）21，43，89，（ ），（ ），（ ）（3） 64、48、40、36、34、( )（4） 1、4、5、8、9、（ ）、13、（ ）、（ ） （5） □÷△ = 16……16， □最小是（ ）. 三、解方程.(24分)χ－35χ＝65 8×112－12χ＝12（χ－6）×65＝25 2χ–91 = 9841＋43χ＝21 31χ＋60%χ＝281-14%χ=65 2×(3.5-χ)=3四、下面各题怎样算简便就怎样算.（42分）815×516+527÷109 （16－112）×24－4515÷[（23+15）×113] (85)6532.768.1065÷⨯+⨯8.37-3.25-(1.37+1.25) 28×(41+71-143)15×(215 ＋311)×11 4.8×0.62+62%×5.2[1–(41+52)]÷3.5 24×51+76÷515.2×96+15.2×5-15.2 (99×99+99)÷0.993.14×35 +3.14÷103 +3.14×110 +3.14 2018×20182019第2部分：选做题拓展拓展提升.（共20分，做对得分，不错或做错不扣分） 1.算“24”点，在横线上写上算式.（每题2分，共10分） （1）3、 6、 7、 10 （2）1、 2、 7、 7 （3）4、 7、 8、 8 （4）7、 8、 8、 10 （5）3、 8、 8、 10 2.计算下面各题.（每题2分，共10分）（1）12.6×5.8＋42×1.26 （2）20142014×2013－2014×20132013（3）1÷（2÷3）÷（3÷4）÷（4÷5）÷（5÷6）（4）12 +16 +112 +120 +130 +142 +156（5）0.1＋0.3＋…＋0.9＋0.11＋0.13＋0.15＋…＋0.97＋0.99六年级数学计算题每日一练二1、直接写出得数.(20分)3 5×12= 1÷23=45÷8= 7×27＝38×12=1 5×1625=14－15=13＋14910÷320＝14÷78=2、怎样简便就怎样算.(40分)（1）3－712－512（2）57×38+58×57（3）815×516+527÷109（4）18×（49+56）3、解方程.(20分)（1）78χ=1116（2）χ×（34+23）=7244、列式计算.(20分)（1）一个数的35是30，这个数（2）比一个数多12%的数是112，是多少？这个数是多少？二1、直接写出得数.（20分）12÷12= 1÷1%= 9.5+0.5=13+14= 0÷15×2=1－1112=78×514=712÷74=45－12=19×78×9=2、怎样简便就怎样算.（40分）（1）23×7+23×5 （2）（16－112）×24－45）（3）（57×47+47）÷47 （4）15÷[（23+15）×113]3、解方程.（16分） （1）χ－35χ＝65 （２）６×112－12χ＝124、列式计算.（24分） 1）12加上23的和，等于一个数的23， （2）一个数的35比它的2倍少这个数是多少？28，这个数是多少三1．直接写出得数.（16分）4.9:6.3＝54＋152＝ 87×74＝ 1―41―21＝ 83＋43＝ 53÷103＝ 9÷43＝32×61×109＝ 2．解方程.（24分）8x －41×3＝445（x －6）×65＝25 x:107＝2853．脱式计算（怎样算简便就怎样算）.（30分） (32×41＋17)÷125（25＋43）÷41＋412518×169＋257×169＋1694.列式计算（30分） 54与它的倒数的和的4倍加上1013，和是多少？。
小学六年级数学竞赛计算专题试卷(含答案)3
小学六年级数学竞赛计算专题试卷（含答案)3 学校:___________姓名：___________班级：___________考号：___________一、计算题1．a◎b=a＋b，求9◎5的值。
2．定义新运算“★”，a★b=a－b，求45.2★38.9的值。
3．定义新运算“⊙ ”，m⊙n=m÷n×2.5。
求：① 60.4⊙0.4的值是多少？② 351⊙0.3的值是多少？4．设a、b表示两个数，a⊙b=a×b－a+b，已知a⊙7=37，求a的值。
5．设a、b表示两个数如果a≥b，规定：a◎b=3×a－2×b；如果a＜b，规定：a◎b=（a ＋b）×3。
求：①9◎6 ② 8◎8 ③2◎76．定义一种新运算“”，已知a b=5a＋10b，求37＋58的值。
7．对于任意两个自然数，定义一种新运算“*”，a*b=（a－b）÷2，求34*（52*48）值。
8．定义两种新运算“◇”和“*”，对于任意两个数x、y，规定x◇y=x＋5y，x*y=（x－y）×2 ，求5◇6＋3.5*2.5的值。
9．定义一种新运算“※”，规定A※B=4A＋3B－5，求：（1）6※9 （2）9※610．定义两种运算“”和“⊙”，对于任意两个整数a，b，a b=a＋b－1，a⊙b=a×b－1。
计算4⊙[（68）（35）]。
11．定义新运算“※”，若2※3=2＋3＋4，5※4=5＋6＋7＋8。
求2※（3※2）的值。
12．计算（44332－443.32）÷（88664－886.64）13．计算（1）98＋998＋9998＋99998＋999998（2）3.9＋0.39＋0.039＋0.0039＋0.0003914．计算1＋3＋5＋7＋……＋65＋67（1）438.9×5 （2）47.26÷5 （3）574.62×25 （4）14.758÷0.25 16．计算．0.9＋9.9＋99.9＋999.9＋9999.9＋99999.917．计算1120×122112211221－1221×11201120112018．计算（1）1234×432143214321－4321×123412341234（2）2002×60066006－3003×4004400419．计算（1）0.11＋0.13＋0.15＋……＋0.97＋0.99（2）8.9×0.2＋8.8×0.2＋8.7×0.2＋……＋8.1×0.220．计算．2＋4＋6＋8……＋198＋20021．计算1.8＋2.8＋3.8＋……＋50.822．计算2002－1999＋1996－1993＋1990－1987＋……＋16－13＋10－7＋423．计算．1 35＋235＋335＋……＋343524．计算．（1）362548361362548186+⨯⨯-（2）（89＋137＋611）÷（311＋57＋49）25．计算．（1）2006÷200620062007（2）9.1×4.8×412÷1.6÷320÷1.326．计算．1 12⨯＋123⨯＋134⨯……＋199100⨯27．计算．（1）238÷238238239（2）3.41×9.9×0.38÷0.19÷3310÷1.128．计算．113－712＋920－1130＋1342－15562 13⨯＋235⨯＋257⨯＋……＋29799⨯＋299101⨯30．计算．1 12⨯＋123⨯＋134⨯＋145⨯＋156⨯＋167⨯31．计算。
2017-2018学年安徽省马鞍山市当涂县银塘中心小学六年级(上)数学竞赛试卷
（3）999+999×999 =999×（1+999） =999×1000 =999000
（4）32×1.25×0.25 =（8×1.25）×（4×0.25） =10×1 =10
（5）1+3+5+7+…+97+99 =（1+99）+（3+97）+…+（49+51） =100×50÷2 =2500
8．（3.00 分）小兰和爸爸、妈妈去个体理发店理发，小兰需要 30 分钟，爸爸需要 20 分钟，妈 妈需要 2 小时，三人等候时间的总和最少要 240 分钟．
【解答】解：2 小时=120 分钟 三人理发的顺序依次是：爸爸→小兰→妈妈， 20×3+30×2+120×1 =60+60+120 =240（分钟） 答：等候时间的总和最少是 240 分钟． 故答案为：240．
÷[（ ﹣ ）÷ ] ÷4+ ×
999+999×999 32×1.25×0.25 1+3+5+7+…+97+99 36×（ + ﹣ ） 24．（4.00 分）计算阴影部分面积：单位：厘米
四、解决问题（21 分） 25．（4.00 分）张明看一本 120 页的故事书，第一天看了全书的 ，第二天看了余下的 ，第三 天应从第几页看起？ 26．（4.00 分）一批化肥第一次运走了 18 吨，第二次运走了总数的 ，剩下的化肥与运走的化 肥重量比是 9：11，这批化肥共有多少吨？ 27．（4.00 分）一件商品降价 20%出售，售价 84 元，原价是多少元？ 28．（5.00 分）中国北部地区严重缺水，节约用水是美德，某地生活用水收费标准规定如下：
2017年5-6年级袋鼠数学竞赛试题
假设每组的和是x，3组数的和就是3x。
6个数的和是3的倍数。 5+6+9+11+14=55
55+4=59，59不是3的倍数 55+7=62，62不是3的倍数
55+8=63，63是3的倍数 55+13=68，68不是3的倍数 55+15=63，70不是3的倍数
8.Martin把下图长方形中1/3的小正方形涂上了蓝色，一半的小正方形涂
(D) 16 cm2
(E) 6 cm2
2×2+4×4+6×6=56(cm2 )
56-1×1-2×2=51(cm2)
16. 四位球员在一场手球比赛中都有进球。他们所有人的进球数量都不同。
在四位当中，Mike 获得的进球数量最少。其余的三位总共进了 20球。
请问Mike的进球数量最大可能为多少？
(A) 2
2km 2km 2km 2km 2km 2km 2km 2km 2km 2km
70km
70-2×10=50(km) 50÷5=10(km) 10+2×3=16(km)
14. 如图所示，第一个三角形里有一只袋鼠。将虚线当作镜子。 前2个镜子的倒影已被显示 出来。 请问哪项是涂黑三角形里的袋鼠的方向？
√
4.Kalle 知道 1111 x 1111 = 1234321。请问 1111 x 2222 等于多少？
√ (A) 3456543 (B) 2345432 (C) 2234322 (D) 2468642 (E) 4321234 1 1 11×2 2 2 2 =（1 1 1 1×1 1 1 1）×2 =1 2 3 4 3 2 1×2 =24 6 8 6 4 2
从右面看： 可以确定盒子宽是4
2017年六年级数学毕业考计算题专项训练-2 (1)
4、 列 式 计 算 。
3 1 5 4 （1）0.375 除以 的商加上 11，再乘以 ， （2）42 的 减去 32 所得的差去除 ，商是多少？ 8 4 6 5 积是多少？
六年级数学计算题训练（十一）
班级： 姓名： 等级： 班级： 1、直接写出得数。 3 0.36 + 4 = 0 × = 37 0. 22 = 2、解比例。 : ÷ 80%= 1、直接写出得数。 1 1 1 2 1 - ＝ + ＝ 6× ＝ 3.14×8= 2 3 4 5 12 5 3 ×0＝ ÷7＝ 1-30%= 10÷10%= 9 7 2、计算下面各题，能简算的要简算。 4 5 1 1 3 4 5 96× × × ×15＋ ÷ 9 9 15 3 16 5 95
25×
7 8 +15÷ 8 7
1 5 1 1 ÷【 （ - ）× 】 3 6 2 2
3、解方程。 x-25%x=15
5 x －4.5×2=0.5
78y+2y=160
3.解方程。 5 5 7 X÷ = 7 14 8 3.2+2X=3.8 2 1 X ＋ X=15 3 6
4、列式计算。 (1) 甲数的 60%比它的
2 ÷2 = 3
1 ÷60%= 2
9 3 ÷ = 10 5
5 ×15= 12
1 3 × = 6 8
1 2 9 + 5 =
1 1÷10 =
75%÷3=
0.64×
7 = 8
5 1 － = 6 2
6.8÷10%=
4.5＋
1 = 2
3 2 × = 8 3
4(x-5.6)=1.6