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Ôn violympic toán tiếng Anh lớp 4 vòng 10

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Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Ra ngày 26/8/2020BÀI THI SỐ 1: THẾ GIỚI CÔN TRÙNGCâu 1: The smallest fraction amonga/is ……..b/c/d/Câu 2: After the first term, in class 4A; of students have excellent grades.Known that in total, students with good and excellent grades account forstudents in the class. What fraction below indicates the ratio of students havinggood grades to all students in class 4A?a/b/c/d/Câu 3: 24 years + x year (s) = century. What is the value of x?a/ 3b/ 4Câu 4: Find x such that:a/c/ 1d/ 6c/d/.b/Câu 5: How many natural numbers x satisfyinga/ 3b/ 14c/ 2?d/ 7Câu 6: Mark has 32 hedgehogs. After selling of the hedgehogs, Mark keeps theremaining hedgehogs in 6 cages. How many hedgehogs are there in each cage?a/ 5 hedgehogsb/ 4 hedgehogsc/ 3 hedgehogsd/ 6 hedgehogsCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)1 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 7: In a running contest, Anna runs for hour, Tom runs forruns for hour, John runs fora/ Tom, Davidminutes. Who runs fastest?b/ Johnc/ Annad/ DavidCâu 8: How many of below fractions are greater than ?a/ 4b/ 1c/ 2d/ 3Câu 9: How many two – digit numbers are there such that at least one digit isdivisible by 4?a/ 42b/ 25c/ 40d/ 41Câu 10: When two numbers are divided by 6, the remainders are 5 and 3respectively. What will the remainder be if the sum of this two numbers aredivided by 6?a/ 0b/ 1c/ 5d/ 2BÀI THI SỐ 2 – ĐỪNG ĐỂ ĐIỂM RƠICâu 1: The value of A +, such that:Câu 2: Computer the sum:, is …….= ….Câu 3: How many of below fractions are greater than 1?Answer: There are ……..fractions.Câu 4: The average ofandis ……..(Write your answer as a fraction in the simplest form a/b)Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)2 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 5: The average of three numbers is 1. The first number is , the secondnumber isWhat is the third number?(Write your answer as a fraction in the simplest form a/b)Answer: …….Câu 6: Find x such that:(Write your answer as a fraction in the simplest form a/b)Answer: …….Câu 7: A house has two windows. Each window is 1m 2dm wide, each windowsbar ism separated from. There are no window bars at either end of the window.How many windows bar does the house have?Answer: …………Câu 8: Tom has a rectangular land that islong. The length islongerthan the width. Half of that land is used to plant trees, and the area is used tomake roads. What is area of the remaining land in m2?Answer: ………m2Câu 9: Suppose in subtraction problem, the units digit of the subtrahend and thetens digit of the minuend are written as 7 mistakenly instead of 1, and result is560. Find the original answer to the problem.Answer: …….Câu 10: In this multiplication, L, M and N are different digits. What iss the valueof L + M + N?Answer: …….BÀI THI SỐ 3 - LEO DỐCCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)3 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 1: The value of 35 x 45 + 21 x 35 + 34 x 35 is ………..Câu 2: City A has population of 895 430, city B has population of 733 017. Thepopulation of city C is 41 299 people fewer than city A. How many people doescity C have move than city B?Answer: …….Câu 3: As in the figure below, a 4 x 4 grid is separated into 5 pieces. Fill in 1, 2, 3and 4 in the boxes respectively to make the four numbers in each line and eachrow different while the sum of the numbers on each piece is the same.Find A + B + C + D.Answer: …….Câu 4: What is the sum of the numbers in these 9established?’s if the equation isa/ 37b/ 44c/ 40d/ 34Câu 5: The figure shows some points arranged in a 4 x 4 grid as shown. Find thenumber of different squares which can be formed using any four of these 16 pointsas vertices.Answer: …….Câu 6: Sam does not have many socks, so she has a clever idea: If she wearsmismatched socks, then she can make lots of different pairs! How many differentCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)4 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10socks must Sam have at least to make sure that she can wear a different pair everyday for a whole month?Answer: …………Câu 7: Supposeandrepresent different digits. If the equation below isestablished, findAnswer: …….Câu 8: Find x such that 100 x (x : 20) = 400Answer: …….Câu 9: The telephone was invented in 1876 by Alexander Graham Bell. In whichcentury is that year?a/ XXb/ XIXc/ XVIId/ XVIIICâu 10: Given a number(x is a digit). How many choices of x are theresuch that this number is divisible by 3 but not divisible by 9?Answer: …….Câu 11: Find x such that: 5382 : x = 234Answer: …….Câu 12: The value of the expression A = 384 x 487 + 384 x 513 is not divisible bya/ 3b/ 2c/ 5d/ 9Câu 13: Which of the following operations have the result of 24?a/5522 : 230b/841 : 35c/ 8640 : 360d/ 577 : 24Câu 14: There area of a rectangular garden is 100m2. It has a length of 20m. Itswidth, in meters, is: …..a/ 6mb/ 3mc/ 4md/ 5mCâu 15: During the first hour, a car completescompletesof the total distance, and itof the total distance in the next hour. After two hours of travelling,find the fraction indicating the remaining distance?(Write your answer as a fraction in the simplest form a/b).Answer: …….Câu 16: The largest two – digit – number which is divisible by 2 and hasremainder 2 when it is divided by 5 is ………Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)5 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 17: A rectangular park has a length of 4000m and a width of 3000m. Thearea of that park is ……..km2.a/1200b/ 1400c/ 12d/ 14Câu 18: Which of the following operations have the greatest result?a/ 9120 : 152b/ 6944 : 112c/ 8142 : 138d/7946 : 137Câu 19: The area of a rectangular garden is 160m2. It has a width of 10m. Itsperimeter, in meters, is ………..a/ 26mb/ 36mc/ 52md/ 42mCâu 20: Mom gives An 72 000 VND to buy notebooks. If the price of eachnotebook is 12 000 VND, then how many notebooks can An buy at most?a/ 6 notebooksb/ 7 notebooksc/ 5 notebooksd/ 4 notebooksCâu 21: Anna has fewer than 18 cakes but more than 8 cakes. If Anna divides thenumber of cakes equally among 5 people, then there are 3 cakes are left. Howmany cakes does Anna have?Answer: …….Câu 22: Four soccer balls cost $36, three basketballs cost $33. How much wouldit cost to buy 5 soccer balls and 7 basketballs?A/ $118B/ $122C/ $411D/ $137Câu 23: Anna buys 6 dozen of pencils. She shares of them with her brother andof the rest with her sister. How many pencils does she have left?A / 18B/ 2C/ 27D/ 9Câu 24: How many pairs of parallel lines are there in the figure below?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)6 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10a/ 10b/ 6c/ 8d/ 4Câu 25: People in Thai Nguyen province participate in planting trees festival. Inthe first 15 days, they plant 1400 trees. In the next 15 days, they plant 1000 trees.On average, how many trees does they has to grow every day?a/ 80 treesb/ 33 treesc/ 47 treesd/ 140 treesCâu 26: The value of expression 13 x 25 + 13 x 75 + (554 + 566) : 5 : 7 is …..Câu 27: How many numbers between 2019 and 9102 are divisible by 5?A/ 1416B/ 1418C/ 1417D/ 1419Câu 28: The following chart shows the price of one item (unit: thousand VND)for pen, pencil, ruler and eraser. How much more does a student pay to buy onepencil and one ruler other than one pen and one eraser?Answer: ……..thousand VNDCâu 29: A rectangular TV has a length of 80cm and a width of 50cm. If the borderis 5 cm thick, the area of the screen is ……………..cm2.Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)7 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 30: Binh spent 140000 VND buying three items. The first one costs of thetotal spending, the second is 6 times as much as the last one. What is the price ofthe second one?A/ 15000 VNDB/ 35000 VND C/ 105000 VND D/ 90000 VNDCâu 31: How many numbers are there in the sequence 2, 5, 8, 11, …., 176?Answer: …….Câu 32: The value of the expression: A = (1243 + 857) : (13 + 87)Answer: …….Câu 33: Which of the following numbers is divisible by both 5 and 9?a/ 5250b/ 6372c/ 3825d/ 3145Câu 34: If a = 8 then the value of 4589 + a x 1218 – 8776 is ………Câu 35: The number of yellow and green marbles in total is 61. There are 11green marbles more than the yellow ones. The number of yellow marbles is:a/ 18b/ 50c/ 25d/ 36Câu 36: The parallelogram ABCD has:a/ AB is parallel to BCb/ AD is parallel to CDc/ AD is parallel to BCd/ AC is parallel to BDCâu 37: A farmer used some poles to fence a square land. There is a door whosewidth is exactly a third of a side satisfying 2 door jambs are coincided 2 poles.The distance between two poles is fixed. If he used 28 poles for each of threesides that don’t have the door, then how many poles did he use?a/ 100b/ 108c/ 104d/ 112Câu 38: Givenandandsuch that a – b = 3 and b – c = 4. The difference ofis: …..Câu 39: The value of the expression (2430 : 30 + 24 x 13) : 3 is ………….a/ 240b/ 242c/ 191d/ 131Câu 40: Lan has fewer than 48 pieces of candy but more than 25 pieces. Lan candivide the number of her candies equally among 9 friends, but if those candies areequally divided among 5 friends then she need 3 candies more. How manycandies does Lan have?Answer: …….Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)8 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 41: Calculate: 76 × 44 + 36 × 77 + 644 × 11 = ….Câu 42: One of the three brothers A, B and C took the pizza. Their mother askedthem who took it and they answered:A: “B took the pizza”B: “I took the pizza”C: “A took the pizza”If only one of the three brothers was telling the truth, then who took thea/ Cb/ Bc/ Ad/ None of the brothersCâu 43: Observe the pattern in the figure, find .a/ 120b/ 124c/ 119d/ 121Câu 44: An’s watch is 10 minutes slow, but he thinks that it is 5 minutes fast.Meanwhile, Khang’s watch is 5 minutes fast, but he believes it is 10 minutes slow.Looking at his watch, An thinks it is now 12.00. What time does Kang think it isnow?a/ 12.20b/ 12.00c/ 12.30d/ 12.10Câu 45: Bili is making figures with toothpicks according to the pattern as shownin the diagram. How many toothpicks does Bili need to add to the 10th figure tomake the 11th?Answer: …….Câu 46: The difference between two numbers is the smallest distinct 3 –digitnatural number and their ratio is 5: 3. What is the value of the larger number?Answer: ……Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)9 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 47: In the multiplication: PT × PT = FPT, same letters stand for same digits.Find F.Anwser: ………….Câu 48: Given a sequence 2; 7; 12; 17; ….. There are …………3 – digit numbersin this sequence.A/ 180B/ 160C/ 220D/ 200Câu 49: Fill in the blank: 99; 92; 86; …; 77Câu 50: A student adds three natural numbers VIO, IO and O together to get a 3 –digit sum where the same letter represents the same digit. What is the maximumvalue to be obtained?Answer: …….Câu 51: Which of the following best completes the pattern above?A/B/C/Câu 52: Given a parallelogram ABCD where AB =D/dm and BC =dm + AB.AB + BC = ….dm.a/b/c/d/Câu 53: The area of the following rectangle is ………..Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)10 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10a/ 25dm2b/ 75dmc/ 75dm2d/ 25dmCâu 54: The sum of the remainders of two divisions 2050 : 23 and 375 : 11 is …Câu 55: The average of three numbers is 87. The first number is the largest 2digit natural number and the ratio of the other two numbers is 4:5. What is thedifference between the last two numbers?Answer: ……….Câu 56: How many 2 –digit numbers are there such that it is divisible by 9 andhas remainder 1 and 3 when it is divided by 2 and 5 respectively?a/ 2 numbersb/ 1 numbersc/ 3 numbersd/ 4 numbersCâu 57: Find the value of expression (728 + n) × 5 when n = 523Answer:……Câu 58: Geogre receives a half of a dozen of white envelopes. In each of thesewhite envelopes, there are 5 red envelopes. In each red envelope, there are 4 otherblue envelopes. How many envelopes does he receive in total?A/ 120B/ 240C/ 312D/ 156Câu 59: How many 3-digit numbers are there such that it is divisible by 45 andhas 4 as the tens digit?a/ 3 numbersb/ 2 numbersc/ 5 numbersd/ 4 numbersCâu 60: Give 5 digits 0; 2; 3; 6; 8. Using these digits, how many 3 – distinct –digit numbers can we find such that each number is divisible by 3?Answer: …….Câu 61: If February is a month that contains Friday the 13th, what day of the weekis February 1?a/ Sundayb/ Saturdayc/ Mondayd/ TuesdayCâu 62: According to the pattern below, which of the following figures should befilled in “?” ?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)11 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10a/ picture Db/ picture Ac/ picture Bd/ picture CCâu 63: Mark finds the sums of pairs of two consecutive even natural numbers(without repetition).Example: Pair 1: 0 + 2; Pair 2: 4 + 6; ….What is the result he may find for the 2019th pair?Answer: …………Câu 64: The result after carrying out 4 continuous calculations: add 2019,subtract 2020, multiply by 714, divide by 2022 is 2023. What is the initialnumber?Answer: ………..Câu 65: As in the figure below, a large rectangle is formed by 9 rectangles. Giventhat the area of rectangle 1 is 1cm2, the area of rectangle 2 is 2cm2, the area ofrectangle 3 is 3cm2, the area of rectangle 4 is 4cm2, and the area of rectangle 5 is5cm2. Find the area of rectangle 6 in cm2.a/b/ 6c/ 8d/ 7Câu 66: An, Binh and Cuong got some notebooks as rewards from their teacher.At first, An had three times as many notebooks as Binh and Binh had twice asmany notebooks as Cuong. Then, An decides to give some of his rewards to Binhand Cuong so that they will have the same number of notebooks. What fractionsof his notebooks should An give to Binh?(Write your answer as a fraction in the simplest form a/b)Câu 67: How many triangles are there in the following figure?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)12 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Answer: …….Câu 68: A rectangular garden 50m long and 10m wide is enclosed by a fence. Tomake the garden larger, while using the same fence, its shape is changed to asquare. By how many square meters does this enlarge the garden?a/ 800b/ 400c/ 200d/100Câu 69: On a journey, Tuan found a bag containing 50 coins. The total value ofthese coins was 181 cents, and there were only two-cent coins or five – cent coins.Then how many more five-cent coins are there more than two – cent coins?Answer: …….Câu 70: The average are of a group of 11 students is 23. If we add a teacher tothat group, the average age is 25. How old is the teacher?Answer: …….Câu 71: There are 4 statements about the natural number A:(1): A is divisible by 5(2): A is divisible by 11(3): A is divisible by 55(4): A is less than 10.It is known that 2 of these statements are true, and 2 are false. Then A = ?Câu 72: Candice has 7 times as many candies as her brother Alex. If she givesAlex 5 candies of hers. Candice will have thrice as many candies as him. Howmany candies does Candice have?Answer: …….Câu 73: Given that a clock strikes 4 times “Dong – dong – dong – dong” at 4o’clock, which takes 6 seconds. How many seconds does it take for the sameclock to strike 12 times at 12 o’clock?a/ 22b/ 24c/ 18d/ 20Câu 74: In how many ways can we simplify the fraction?Answer: ………Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)13 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 75: Fill each of the “+, -, x, :” into the four ’s as in 10 10 10 10 10.Find the maximum value of this equation.Answer: …….Câu 76: Given two digits a and b such that the numberis divisible by 2; 5and 9. The sum of a and b is:a/ 23b/ 14c/ 5d/ 11Câu 77: A book is numbered pages from 1 to 100. How many 1’s are needed?A/ 22B/ 23C/ 21D/ 20Câu 78: Find the natural number x, given that 1 + 2 + 3 + … + x = 210.a/ 20b/ 15c/ 19d/ 25Câu 79: How many acute angles in the following figure?a/ 13b/ 11c/ 12d/ 10Câu 80: John reads a book that has 208 pages from page 1 to page 208. Howmany times does the digit “2” appear on the page numbers of the book?A / 30B/ 40C/ 50D/ 60Câu 81: In a class 14 students collect stamps, 16 students collect postcards. 5students collect both, but 4 students collect neither. How many students are therein the class?Answer: …….Câu 82: Using four digits 2, 0, 1, 9 exactly once to fill the expression:+x. What is the maximum value to be obtained?A/ 7B/ 10C/ 11D/ 3Câu 83: A group of students is assigned to plant a number of trees within a weekfrom Monday. They plan to plant two more trees every day than the previous one.On Thursday, they plant 57 trees. On the last day, they only have to plant 33 treesleft. How many trees in total are they assigned to plan?Answer: ……….Câu 84: Harry buys 20 books and 19 notebooks for $98. On the next day, he buys19 books and 20 notebooks for $97. How much is one notebook?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)14 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Answer: $..........Câu 85: Ryan creates a 2 – character code with the former from the wordVIOLYMPIC and the latter from the number 2019. How many different codes hecreate?A/ 36B/ 32C/ 72D/ 64Câu 86: Larry writes the number 2019 on the board. He then starts to write othernumbers by adding 3 to the previous one. What could be the 2019th number on theboard?Answer: ………Câu 87: The length of a rectangular garden is 3 times as long as its width. If thewidth is 10m, the area of that garden is …a/ 100m2b/ 300m2c/ 900m2d/ 400m2Câu 88: Mr.Zack writes down 4 distinct numbers on a piece of paper. No numberon the paper is the difference between any two of the other numbers. What is theleast possible total of these 4 numbers?Answer: …….Câu 89: Fill numbers 1 ~ 9 into the circles below respectively to make the sum ofthe numbers on each side the same. Given that each number can only be usedonce, and that a few numbers are already filled in the circles, findAnswer: ……….Câu 90: The following chart shows the dream job of students (each studentchooses only one job) in class 4B. Which of the followings represents the ratiobetween the number of students whose dream job is scientist and the total numberof students in the class?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)15 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10A/B/C/D/Câu 91: If you only have 5 – cent and 8 – cent coins and a all the candies beloware only sold in exact change, how many candies can be purchased with yourcoins?A/ 4B/ 6C/ 3D/ 5Câu 92: There are 39 boys and 23 girls in the singing group. Every week 6 moreboys and 8 more girls join the group. So after how many weeks will the number ofboys and girls be equal?Answer: …….Câu 93: Find the value of sum:(Write your answer as a fraction in the simplest form a/b)Answer: …….Câu 94: The following sequence has 9 terms, in which the first and the last areknown, the seven in the middle is unknown: 32019. Thedifferences between two consecutive terms in the sequence are all the same. Whatis the value of the fourth rightmost term?Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)16 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Answer: ……..Câu 95: To number pages of a Maths book from Page 1, the author uses 600digits. How many pages are there in the book?A/ 237B/ 300C/ 236D/ 200Câu 96: Calculate:Answer: ………..Câu 97: A = 7250 : 290 + 25 x 20B = 9000 : 45 + 20 x 10.The value of the expression A + B is ……Câu 98: If A∇B represents A x B – 2019, then what is the value of (45∇67)∇89?A/ 264297B/ 266316C/ 86625D/ 88644Câu 99: When we write 864 between the two digits, we get a 5 – digit number.When the new number is divided by 2; 5 and 9; we always get remainder 1. Findthe 5 digit number.Answer: …….Câu 100: Some students are exchanging their toys. They all agree that 2 teddybears are exchanged for 1 book. 1 doll is exchanged for 1 book and 3 teddy bears.Annie has 2 dolls, so how many teddy bears can she exchange for?Answer: ……..teddy bears.Câu 101: Mr. Zack has 24 pieces of paper. On a rainy day, he decided to cut someof the pieces in to 8 smaller pieces each. At the end, the total number of pieces isten times the number of pieces that were cut. How many pieces of paper were cut?Answer: …….Câu 102: Fill in the sequence:1 4 6 9 11 14 16 19 ?A/ 22B/23C/ 21D/ 20Câu 103: Choose the largest fraction in the followings:A/B/C/D/Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)17 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 104: The average age of three random foreigners is 32. The boy’s age isofthe total age, while the woman’s age is of the man’s age. How old is the woman?A/ 50B/ 30C/ 48D/20Câu 105: An, Binh and Cuong are fiven 75 notebooks in total. An gives Binh 20of hers, Binh gives Cuong 1 of his and Cuong gives An 9 of his. It surprisinglyturns out that they now have the same number of notebooks. How manynotebooks does An have initially?A/ 14B/ 36C/ 16D/ 33Câu 106: How many zeros are there in the result of 10 x 20 x 30 x … x 100?A/ 13B/ 12C/ 9D/ 10Câu 107: x x 526 + 335 x x = 205 x 147 x 4.The value of x is ……….Câu 108: Complete the sequence: 2; 3; 3; 5; 10; 13; 39; 43; …Câu 109: Find x such that: x + (x + 1) + (x + 2) + … + (x + 21) = 253.a/ 23b/ 21c/ 2d/ 1Câu 110: The product of two distinct natural numbers is 144. What is theirminimum possible difference?Answer: …….Câu 111: There are 50 – odd people going camping. Suppose there will be 1person short when they are divided into groups of seven of eight, how manypeople are there?Answer: …..Câu 112: There are ………2 – digit numbers that are divided by 2 but not dividedby 3.Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)18 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 113: Give then parallelogram as shown below:Known that the perimeter of the parallelogram is 56cm. AH = CD, BC = 13cm.The area of the parallelogram ABCD is ……cm2Câu 114: The expression whose value is divisible by 3 is:a/ 40 x 97 + 40 x 53b/ 162 : 20 + 238 : 20c/ 14 x 159 – 14 x 59d/ 27 x 11 + 103Câu 115: The average of all two-digit numbers which is divisible by 2, divisibleby 3 and have remainder 1 when it is divided by 5 is:a/ 66b/ 99c/ 51d/ 81Câu 116: The total of each row and column is given in the table.Find the value ofAnswer: …..Câu 117: Find a three-digit number which is divisible by 9, have remainder 1 and4 when it is divided by 2 and 5 respectively and have hundreds digit 4.Answer: …..Câu 118: Find the unit digit ofA/ 2B/ 0C/ 4D/ 6Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)19 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 119: The first 2019 natural numbers are listed on a piece of paper. Studentsare then asked to cross out multiples of 5 and find the product of the remainingnumbers. What is the unit digit of the product?Answer: …………..Câu 120: Four towns P, Q, R, S are connected by roads as below. There is a racewhere each racer must use each road exactly once. The race starts at S and end atQ. How many possible routes are there?a/ 12b/ 10c/ 6d/ 2Câu 121: Find x such that 15448 : x = 211 (remainder 45)Answer: …..Câu 122: The product of two natural numbers is 53. What is their difference?Answer: …………….Câu 123: On a rectangular field whose length is 24 meters and width is a half thelength; a house was built in the shape of a square whose side is 9 meters and therest is for gardening. What’s the area of the garden?Answer: ……….m2Câu 124: The 2019th even number (including 0) is………Câu 125: A rice shop sells 200kg of rice during the first 14 days. In the next 16days, 250kg of rice is sold. How many kilograms of rice does the store sell eachday on average?Answer: …..Câu 126 A pool is 12m long and 10m wide. If you place flower pots around thepool 2 meters apart, center to center, how many flower pots do you need? (Thereshould be a flower pot at each corner of the pool)Answer: …..Câu 127: If m = 2136 then 3294 – m : 6 = ……Câu 128: Find x such that: 12 044 : x – 3200 : x = 67a/ 133b/ 131c/ 130d/ 132Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)20 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Câu 129: Ngoc has 16 letters: 4 letters A, 4 letters B, 4 letters C and 4 letters D.He puts them in the 4 x 4 grid below, in such a way that every row and everycolumn has 4 letters A, B, C, D. What letter should he put in the position of thequestion mark?a/ Ab/ Bc/ Cd/ DCâu 130: By switching the positions of the two digits, 12 turns into a largernumber 21. How many two-digit natural numbers (excluding 12) having thisproperty?Answer: …..Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)21 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10HƯỚNG DẪN GIẢIBài thi số 1: Thế giới côn trùngCâu 1: The smallest fraction amongPhân số nhỏ nhất trongis ……..là ……a/b/c/d/Hướng dẫnTa có:;Vậy phân số nhỏ nhất làChọn cCâu 2: After the first term, in class 4A; of students have excellent grades.Known that in total, students with good and excellent grades account forstudents in the class. What fraction below indicates the ratio of students havinggood grades to all students in class 4A?Sau học kỳ đầu tiên, trong lớp 4A; học sinh có điểm xuất sắc. Được biết, trongtổng số, học sinh có điểm tốt và xuất sắc chiếmhọc sinh trong lớp. Phần nàodưới đây cho thấy tỷ lệ học sinh có điểm tốt trong tất cả số học sinh trong lớp 4A?a/b/c/d/Hướng dẫnCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)22 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Phân số chỉ số học sinh tốt là:(tổng số học sinh)Chọn aCâu 3: 24 years + x year (s) = century. What is the value of x?24 năm + x năm = thế kỉ. Giá trị của x là gì?a/ 3Hướng dẫnb/ 4c/ 1d/ 6c/d/thế kỉ = 25 năm.Vậy x = 25 – 24 = 1Chọn cCâu 4: Find x such that:a/.b/Hướng dẫn...Chọn bCâu 5: How many natural numbers x satisfyingCó bao nhiêu số tự nhiên x thỏa mãn:a/ 3b/ 14??c/ 2d/ 7Cung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)23 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Hướng dẫnVậy 10 < 7 x x < 25.Suy ra x = 2 hoặc 3.Vậy có 2 giá trị x thỏa mãn.Điền 2Câu 6: Mark has 32 hedgehogs. After selling of the hedgehogs, Mark keeps theremaining hedgehogs in 6 cages. How many hedgehogs are there in each cage?Mark có 32 con nhím. Sau khi bán đượccon nhím, Mark giữ những con nhímcịn lại trong 6 lồng. Có bao nhiêu con nhím trong mỗi lồng?a/ 5 hedgehogsb/ 4 hedgehogsc/ 3 hedgehogsHướng dẫnSố con nhím đã bán là: 32 : 4 = 8 (con)Số con nhím cịn lại là: 32 – 8 = 24 (con)Mỗi lồng có số con là: 24 : 6 = 4 (con)Chọn bCâu 7: In a running contest, Anna runs for hour, Tom runs forruns for hour, John runs ford/ 6 hedgehogs, Davidminutes. Who runs fastest?Trong một cuộc chạy đua, Anna chạy hết giờ, Tom chạy hết giờ, David chạyhết giờ, John chạy hết 11 phút. Ai chạy nhanh nhất?a/ TomHướng dẫnb/ Johnc/ Annad/ DavidCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)24 Hệ thống phát triển Tốn IQ Việt NamCơ Trang: 0948.228.325-------------***----------------ĐỀ THI VIOLYMPIC TỐN TIẾNG ANH LỚP 4 – VỊNG 10Đổi: giờ = 15 phút; giờ = 10 phút; giờ = 12 phút.Thời gian càng ngắn thì người đó chạy càng nhanh.Vì 15 > 12 > 11 > 10 nên Tom chạy nhanh nhấtChọn ACâu 8: How many of below fractions are greater than ?Có bao nhiêu phân số lớn hơn ?a/ 4Hướng dẫnb/ 1c/ 2d/ 3;Vậy có 2 phân số lớn hơnChọn cCâu 9: How many two – digit numbers are there such that at least one digit isdivisible by 4?Có bao nhiêu số có hai chữ số sao cho ít nhất một chữ số chia hết cho 4?a/ 42b/ 25c/ 40d/ 41Hướng dẫnNếu chữ số hàng chục chia hết cho 4 thì có thể là 4; 8.Chữ số hàng đơn vị có 10 cách chọnNếu chữ số hàng đơn vị chia hết cho 4 thì có thể là 0; 4; 8Chữ số hàng chục có 9 cách chọnCác số được tính 2 lần là: 44; 88; 40; 80; 48; 84;Số số thỏa mãn là: 2 x 10 + 3 x 9 – 6 = 41 (số)Chọn dCung cấp tài liệu bồi dưỡn gToán lớp 5 từ cơ bản đến nâng cao theo chuyên đề - Luyện violympic –Liên hệ| Cô Trang – 0948.228.325 (Zalo)25