de thi violympic toan tieng anh lop 4 vong 9

Đề thi Violympic Tốn Tiếng Anh lớp vòng năm 2014 - 2015 Exam number 1: Fill in the blank with the suitable number Question 1: Mary reads four books every month She is busy and reads only one book on March On September, she takes a break and does not read any books What is the number of books that Anna reads in one year? Question 2: Four boxes of chocolate candies are equivalent to eight hundred candies The number of candies is the same for all boxes How many candies are in each box? Question 3: If y is a natural number and y/9 < 7/12 then the greatest value of y is Question 4: 5/4 of kg is g Question 5: Calculate: (247 x 315 + 246 x 314) x (98 x 47 - 94 x 49) = Question 6: If x is a natural number and 7/9 < x/12 then the smallest value of x is Question 7: The product of four consecutive natural numbers is 570024 Their sum is Question 8: The smallest number such that the product of all it's digits is 20 is Question 9: If B is not divisibly by 24 and B is the greatest 5-digit number that the sum of all digits is 21 then B = Question 10: If 324/483 = 108/x then the value of x is Exam number 2: Help the Miners to go through the maze by answering questions to reach the destination (Đi tìm kho báu) Question 1: Calculate: Question 2: Add and simplify your answer: 1/5 + 3/10 + 1/2 = Question 3: Find x if Question 4: Calculate: 7/45 + 5/3 - 7/5 = Question 5: Find y if y x 168 = 23 + 25 + 27 + + 105 Exam number 3: Choose the most suitable answer in available answers (Cóc vàng tài ba) Question 1: Which of the following calculations euqals 5/36? a 1/2 + 1/3 x 1/6 b 1/9 + 5/12 - 7/18 c (1/2 + 1/3) : 1/6 d 1/2 + 1/3 : 1/6 Question 2: Jane bought products on types Their price was shown in the table: VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí She paid $80 and had $5 left How many products on type did she buy? a b c d Question 3: Which of the following fractions is the greatest? a 8/15 b 7/12 c 17/30 d 1/2 Question 4: Sara's car weighs 41/6 tons and Anna's car weighs tons Which of the following statements is true? a Anna's car weighs 25/6 tons more than Sara's car b Sara's car weighs 25/6 tons more than Anna's car c Anna's car weighs 23/6 tons more than Sara's car d Sara's car weighs 23/6 tons more than Anna's car Question 5: The sum of odd numbers from 823 to 2015 is a 818763 b 847143 c 845724 d 844305 Question 6: Let A = abc x dec Which of the following numbers can not be A? a 40302 b 27336 c 53064 d 72541 Question 7: Which of the following numbers is in the sequence: 25; 28; 31; 34; 37; a 2014 b 22 c 1235 d 16 Question 8: Bob buys three times as many apples as Peter Mia buys apples more than Bob and 19 apples more than Peter How many apples they buy together? Choose the correct answer a 26 apples b 37 apples c 49 apples d 51 apples Question 9: How many natural numbers between 1000 and 4000 are there for which the thousands digit equals the sum of the other three digits? a 20 b 19 c 16 d 12 Question 10: Let M = 91011121314 (M is written by consecutive natural numbers) If M has 175 digits then when M divided by 5, the remaider is a b c d Đáp án Exam number 1: Fill in the blank with the suitable number Question 1: 41 VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Mary đọc sách tháng Cô bận đọc vào tháng Ba Vào tháng 9, cô nghỉ ngơi không đọc sách Hỏi số sách mà Anna đọc năm bao nhiêu? Question 2: 200 Question 3: Question 4: 2500 Question 5: Question 6: 10 Question 7: 142503 Question 8: 299 Question 9: 99300 Question 10: 161 Exam number 2: Help the Miners to go through the maze by answering questions to reach the destination (Đi tìm kho báu) Question 1: Question 2: Question 3: 1/20 Question 4: 19/45 Question 5: 16 Exam number 3: Choose the most suitable answer in available answers (Cóc vàng tài ba) Question 1: b Question 2: a Question 3: b Question 4: d Question 5: b Question 6: a Question 7: a Question 8: c Question 9: b Question 10: b VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí ... from 823 to 2015 is a 818763 b 847 143 c 845 7 24 d 844 305 Question 6: Let A = abc x dec Which of the following numbers can not be A? a 40 302 b 27336 c 530 64 d 72 541 Question 7: Which of the following... đọc năm bao nhiêu? Question 2: 200 Question 3: Question 4: 2500 Question 5: Question 6: 10 Question 7: 142 503 Question 8: 299 Question 9: 99 300 Question 10: 161 Exam number 2: Help the Miners to... 37 apples c 49 apples d 51 apples Question 9: How many natural numbers between 1000 and 40 00 are there for which the thousands digit equals the sum of the other three digits? a 20 b 19 c 16 d 12