Đề thi FMO Khối 3 - Đề 9 (Kèm đáp án)

 FINAL EXAM – Grade 3 
 I. Warm-up (3 points per question / No points deducted for wrong answers) 
1. A number is filled in each circle so that the operations following the arrows are correct. 
 Find the number to replace the bee. 
 A) 6 B) 5 C) 7 D) 10 E) 9 
2. Each day, Lucy can eat 2 candies or 3 candies. Which number below CANNOT be the 
 total number of candies that she eats in 3 days? 
 A) 7 B) 6 C) 5 D) 9 E) 8 
3. The chart below shows the number of puzzle pieces in a box. If the box has 6 green 
 puzzle pieces, how many puzzle pieces are there in the box? 
 A) 36 B) 30 C) 48 D) 42 E) 45 
4. Adrian has $49 in his wallet. He wants to buy 8 pencils and some erasers. Each pencil 
 costs $4 and each eraser costs $3. At most how many erasers can Adrian buy? 
 A) 7 B) 5 C) 6 D) 4 E) 8 
 1 
FERMAT Mathematical Olympiad 2023-2024 
All materials on the test are copyrighted and owned by Fermat Education 
9. Oliver placed identical boxes on top of each other to get the figure below. At least how 
 many boxes does he need? 
 A) 15 B) 24 C) 25 D) 18 E) 21 
10. Sarah placed a pot of plant on the table and under the table. Each time, she took 
 measurements and got the results as in the figure below. How tall is the table? 
 A) 100cm B) 120cm C) 90cm D) 60cm E) 80cm 
II. Speed-up (4 points per question / No points deducted for wrong answers) 
11. When Andrea is 7 years old, the sum of Andrea’s age and her father’s age is 36. How 
 old is Andrea when her father is 40 years old? 
 A) 18 B) 11 C) 3 D) 22 E) 4 
12. Solve the puzzle below to find the missing number. 
 4 1  3 = 4 + 5 + 6 
 2 4  5 = 2 + 6 + 10 + 14 + 18 
 3 2  4 = ? 
 A) 15 B) 26 C) 35 D) 24 E) 20 
 3 
FERMAT Mathematical Olympiad 2023-2024 
All materials on the test are copyrighted and owned by Fermat Education 
III. Challenge (8 points per question / No points deducted for wrong answers) 
16. Each cell is filled with a letter so that every row, every column and every 2x2 block at 
 four corners have letters M, A, T, H. Find the letter to replace the question mark. 
 A) M B) A C) T D) H E) None of the above 
17. Identical small triangles are combined to make a sequence of figures with pattern 
 below. How many small triangles are there in figure 10? 
 A) 121 B) 102 C) 123 D) 113 E) 104 
18. Given 4 balanced scales as below, find the missing weight on the last scale. 
 A) 12 kg B) 9 kg C) 10 kg D) 11 kg E) 13 kg 
19. Lucy practiced running in a week, starting from Monday. Each day, she ran 5 minutes 
 more than the previous day. Moreover, on Sunday, Lucy ran twice as long as she did 
 on Monday. How many minutes did she run in that week in total? 
 A) 295 B) 300 C) 305 D) 310 E) 315 
 5 
FERMAT Mathematical Olympiad 2023-2024 
All materials on the test are copyrighted and owned by Fermat Education