Asmo đề thi thử amo số 2 lớp 3 2020

TRUNG TÂM TOÁN SONG NGỮ HOA KỲ -LỚP CÔ THÚY-ZALO 0986692706 ĐỀ THI THỬ AMO SỐ AMO OFFICIAL TEST 2017 – GRADE ĐỀ THI CHÍNH THỨC AMO NĂM 2017 - LỚP INSTRUCTION CHỈ DẪN Please DO NOT OPEN the contest booklet until the Proctor has given permission TIME: hour 30 minutes Attempt all 25 questions Each question scores point No points are deducted for incorrect answers Write your answers neatly in the answer sheet in the booklet PROCTORING: No one may help any student in any way during the contest No calculators are allowed All students must fill in your Name, Class and School MINIMUM TIME: Students must stay in the exam hall at least 1h 15 Students must show detailed working and put answers in the answer sheet 10 No spare papers can be used in writing this contest Enough space is provided for your working of each question TRUNG TÂM TOÁN SONG NGỮ HOA KỲ -LỚP CÔ THÚY-ZALO 0986692706 Question What is the value of 20 + 19 + 18 +17 + 16 - 15 - 14 - 13- 12-11? Question What is the value of (70 x 4) - (80 x 3) + (60 x 5)? Question The sum of the digits of the number 216 is What is the least number greater than 216 whose sum of the digits is 9? Question Find the value of 98-87 + 76 -65 +54- 43 +32 - 21 + 10 Question Sandy multiplies x x x x x x 2x5 and writes the product as a whole number What is the sum of the digits of this number? Question The first row has dots: The second row has dots: The third row has dots: More rows are added Each additional row has more dots than the row before it How many dots will there be in the first 10 rows combined? Question Dillon works at the park every third day William works at the park every sixth day Francis works at the park every eighth day They all worked together on Thursday The park is open every day On what day of the week will they all next work together? (If your answer is Monday, write 001; if it is Tuesday, write 002; and so on) Question Summer vacation lasts for 55 days During summer vacation, what is the greatest number of Fridays that could occur? Question What is the greatest multiple of 25 that has exactly digits? Question 10 Jake is John's father The sum of their ages is 44 In 14 years Jake will be twice as old as John How old will John be in 14 years? Question 11 At Springfield Elementary School, a shelf contains either math books or spelling books On 15 shelves at Springfield Elementary, there are 72 spelling books and some number of math books All 15 shelves ảe full How many math books ảe thể on the shelves? Question 12 The cost of pencils and markers is $13 The cost of pencils and markers is S12 What is the total cost of pencils and markers? TRUNG TÂM TOÁN SONG NGỮ HOA KỲ -LỚP CÔ THÚY-ZALO 0986692706 Question 13 A certain book has its pages numbered from to 50 Then any page number that contains the digit is entirely erased What is the sum of all of the numbers that were erased? Câu 14 Given: What is the value of O? Câu 15 The cube at the right is constructed of same sixed figures as shown How many figures does the cube contain?