ĐỀ THI VÒNG QUỐC GIA TIMO LỚP 3 NĂM 2025

MATHX.vn Đề TIMO 3

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ĐỀ THI VÒNG QUỐC GIA TIMO LỚP 3 – NĂM 2025

(Đề được tham khảo theo xây dựng của học sinh)

Q1. According to the pattern below, what is the English letter in the space provided?

Pattern: Quy luật; English letter: Chữ cái tiếng Anh; Space: Chỗ trống.

Q2. If today is Friday, which day of the week was it 25 days ago?

Today: Hôm nay; Friday: Thứ Sáu; Day of the week: Thứ trong tuần; Ago: Trước.

Q3.

What is the number represented by "?" in the following table?

Represent: Biểu diễn.

Q4. According to the pattern shown below, how many triangles are there from the 1st

symbol to the 100th symbol, counting from the left?

Pattern: Quy luật; Triangle: Hình tam giác; Symbol: Kí hiệu; Left: Bên trái.

Q5.

At 8 o'clock, Andy and Ben are 30 km apart and they travel toward each other. Each

hour, Andy walks 4 km and Ben walks 3 km. How many kilometers apart are they at 10

o'clock in the same day?

Apart: Cách xa nhau; Toward each other: Đi về phía nhau; Each: Mỗi; Hour: Giờ; Same

day: Cùng ngày.

Q6. Find the value of 54 + 79 + 34 + 27 - 39 + 46 + 66 + 33.

Value: Giá trị.

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Q7. Find the value of 24 x 43 + 48 x 12 - 65 x 24.

Value: Giá trị.

Q8. Find the value of 450 : 2 + 450 : 3 + 450 : 5.

Value: Giá trị.

Q9. Find the value of 1 + 2 + 3 + 4 + 5 + ... + 14 + 15.

Value: Giá trị.

Q10. Which number should be filled in the blank to get the correct equation below?

Fill: Điền; Blank: Chỗ trống; Correct: Đúng; Equation: Phép tính.

_____ : 7 x 5 - 45 = 25

Q11. Given that the numbers below form an arithmetic sequence, find the 21st term.

Arithmetic sequence: Dãy số cách đều; 21st term: Số thứ 21.

19, 27, 35, 43, 51, ...

Q12. Define the new operation symbol a ⊕ b = 4 x (a - b), find the value of the

expression (14 ⊕ 10) + (16 ⊕ 8) + (18 ⊕ 5).

Define: Định nghĩa; Operation symbol: Ký hiệu phép toán; Value: Giá trị; Expression:

Biểu thức.

Q13. Tom has 15 marbles and Jerry has 45 marbles. How many marbles should Jerry

give Tom so that Tom will have 3 times as many marbles as Jerry?

Marble: Viên bi; Give: Cho; 3 times: Gấp 3 lần.

Q14. What is the smallest 3-digit even number that is divisible by both 11 and 15?

Smallest: Nhỏ nhất; 3-digit even number: Số chẵn có 3 chữ số; Divisible by: Chia hết

cho.

Q15. Given that A and B are different digits, find the smallest value of A x B.

Different: Khác nhau; Digit: Chữ số; Smallest value: Giá trị nhỏ nhất.

Q16. A prism has 88 vertices. How many edges does this prism have?

Prism: Hình lăng trụ; Vertices: Đỉnh; Edges: Cạnh.

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Q17. Identical cubes are combined to get the figure below. At least how many square

faces can be seen if viewing the figure from the right?

Identical: Giống nhau; Cubes: Hình lập phương; Figure: Hình vẽ; At least: Ít nhất; Square face:

Mặt hình vuông; Viewing: Quan sát; Right: Bên phải.

Q18. How many squares are there in the figure below?

Squares: Hình vuông; Figure: Hình vẽ.

Q19. How many rectangles containing the letter M are there in the figure below?

Rectangle: Hình chữ nhật; Letter: Chữ cái; Figure: Hình vẽ.

Q20. 2 identical small squares and 1 big square are combined to form a big rectangle as

shown in the figure below. Given that the perimeter of the big square is 32 cm, find the

perimeter of the big rectangle in cm.