Asmo đề thi thử amo số 5 lớp 3 2020

TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 ĐỀ THI THỬ AMO SỐ 5- LỚP 3-2020 American Mathematics Olympiad AMO 2018 – MOCK TEST #1 Grade INSTRUCTION - There are a total of 25 questions, which are divided into parts In the first part, which contains 15 multiple-choice questions, choose only ONE correct answer among five choices and click its corresponding one in the answer form For shortanswer questions, just write the fina answer for each question in your answer form - You will get points for each correct answer, and no minus point for each incorrect or blank answer - Figures are NOT drawn to scale - You can use any kind of dictionaries, but try NOT to use any kinds of calculators In the real test, calculators are not permitted GOOD LUCK TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 MULITIPLE-CHOICE QUESTION Question Which rule can be used to explain this number pattern? 1,1,2,6,24,120,720,… A Multiply by 1, then multiply by 2, then multiply by 3, and so on B Multiply by and add C Multiply by and subtract D Add 0, then add 1, then add 2, and so on E None of the above Question If Find the value of A B 12 C 24 D 36 E 48 Question 2018 is multiplied by a number and the product remains the same The number is A 2018 B C.0 D 2018 E.8012 Question Gene Golub was born on 29th February His birthday comes: Question How many months in a year have exactly 30 days? A Once every four years B Every year TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 C twice in a year D After every two years E every decade A B C D E Question Which of the following is different from the others? A 10 thousands B 1000 tens C 10000 ones D 1000 hundreds E All are the same Question Fin the next figure E none of the above Question During break time, one of five students wrote something nasty on the blackboard When the teacher asked, they answered in the following order: Andrew: “It was Barry or Cris.” Barry: “Neither Elsa nor I did it.” Cris: “Andrew and Barry is telling the truth.” Daniel: “either Andrew or Barry is telling the truth.” Elsa: “Daniel is not telling the truth.” The teacher knows that three of them never lie while the other two may lie Who wrote it? TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 A Andrew B Barry C Cris D Daniel E Elsa Question How many small cubes are required to create this solid shape? A.12 B 18 C 20 D 22 E 24 Question 10 Which of the following options show the reflection of the image over the dotted line? F none of the above Question 11 Suppose it is now the month of December What month will it be 100 calendar months from now? TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 A January B February C March D April E May Question 12 How many squares are there in the diagram below? A B.9 C 10 D 11 E 12 Question 13 find the next number in the following sequence 21,24,19,26,17,? A 18 B.19 C 27 D 28 E None of the above Question 14 two years ago the sum of Amy’s and Bob’s ages was What will the sum of their ags be after years from now? A 11 B.14 C 18 D 15 E None of the above Question 15 Peter and the other kids are having a race If peter overtakes kid who in is the second place, what position is peter in right now? A First B second C Third D Forth TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 E Fifth SHORT-ANSWER QUESTIONS Question 16 Few passengers are standing in a row Kevin is at the 19 th position from the front, and Evan is standing at the 9th position from the back If Kevin and Evan interchange their positions, Evan becomes 19th from the back How many passengers are there in the row? Question 17 One day Randy was bored, and he wrote all the whole numbers from 49 to 97 on his paper How many times did he write the digit “8” on his paper? Question 18 Find the sum of all odd numbers between and 20 Question 19 In the following, all the different letters stand for different digits Find the value of the 3-digit number ODD Question 20 What is the length, to the nearest centimeter, of the hypotenuse of the right triangle shown? Question 21 Find the sum of the largest digit number and the smallest digit number Question 22 An operator  acts on two numbers to give the following outcomes: TRUNG TÂM TOÁN SONG NGỮ HOA KỲ LỚP CÔ THÚY-ZALO- 0986692706 What is  equal to? Question 23 The picture given below shows a milestone in a village on “Detroit -Hill City” highway What is distance between Detroit and Hill City, in kilometers? Question 24 Find the missing number Question 25 After buying crayons for $5 each, Hayley is left with $4 ow much amount did she have at first?