ĐỀ SỐ 2: LẦN 2
Logical Thinking / Tư duy lô-gic
1.9 years ago, Peter was 24 years old. How old is he now?
Ago: Trước đây; Now: Hiện tại.
2.According to the pattern shown below, what is the English
letter in the space (‚ ‛) provided?
Pattern: Quy luật; English letter: Chữ cái Tiếng Anh;
Space: Chỗ trống.
F, H, J, L, N, , …
3.If yesterday was Friday, which day of the week will 10
days later be?
Yesterday: Hôm qua; Friday: Thứ Sáu;
Day of the week: Thứ; Later: Sau.
4.According to the pattern below, what is the number in the
space (‚ ‛)?
Pattern: Quy luật; Space: Chỗ trống.
13, 17, 21, 25, 29,

,…

5.According to the pattern below, how many # are there in
the 6th Group?
Pattern: Quy luật; 6th Group: Nhóm thứ 6.

Arithmetic / Số học
6.What is the number should be in the blank if the equation is
correct?
Blank: Chỗ trống; Equation: Phép tính; Correct: Đúng.
19 +

= 29

7.Find the value of 11 +3 + 26 +19 + 4 + 27.
Value: Giá trị.
8.If A represents the same 1-digit number, what is the value
of A if the equation is correct?
Represe Ant: Biểu diễn; 1-digit number: Số có 1 chữ số;
Equation: Phép tính.
A
+ 2

A

3 8

9.Find the value of 36 – 9 + 4.
Value: Giá trị.
10.

Find the value of 1 – 2 + 3 – 4 + 5 – 6 + 7.

Value: Giá trị.
Number Theory / Lý thuyết số
11. By observing the numbers, which even number is the
smallest?
Even number: Số chẵn; Smallest: Nhỏ nhất.
38, 13, 57, 15, 25, 96, 16
12.A is an odd number. Determine that
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + A is odd or even number.
Odd number: Số lẻ; Determine: Xác định;
Odd: Lẻ; Even: Chẵn.
13.Fill the lines with ‚ + ‛ and ‚ – ‛ to make the equation
below correct. (Write down the complete equation on the
answer sheet).
Line: Dòng kẻ; Equation: Phép tính;
Lưu ý viết toàn bộ phép tính vào phiếu trả lời.
9_ 4_5_3=7
14.Amy has 19 bananas and Bruce has 9 bananas. Amy gives
Bruce some bananas. How many banana(s) does Amy have to

give Bruce to make them to have the same number of
bananas?
The same number of bananas: Số quả chuối bằng nhau.
15.The numbers below follow the arithmetic sequence, what
is the 7th number of the sequence?
Arithmetic sequence: Dãy số cách đều;
7th number: Số thứ 7; Sequence: Dãy số.
95, 84, 73, 62, 51, …
16.

How many square(s) is / are there in the figure below?

Square: Hình vuông; Figure: Hình vẽ.

17.

How many side(s) is / are there in the polygon below?

Side: Cạnh; Polygon: Đa giác.

18. It is known that figure 1 is formed by 6 cubes. How
many cube(s) is / are there in figure 2 given that figure 2 is
formed by some shapes as figure 1?

Figure: Hình vẽ; Formed: Được ghép bởi;
Cube: Hình lập phương.

19. How many line segment(s) is / are there in the figure
below?
Line segment: Đoạn thẳng; Figure: Hình vẽ

8.How many interior angle(s) is / are there in the polygon below?
Interior angle: Góc bên trong; Polygon: Đa giác.

Combinatorics / Tổ hợp
21. Alice has five $5 coins. At most how many $2 coins
can she exchange?

Coin: Đồng xu; Maximum: Nhiều nhất; Exchange: Đổi.
22. What is the largest 3-digit even number by choosing 3
digits from 0, 6, 1 and 5? (Each digit can only be used once).
Largest 3-digit even number: Số chẵn lớn nhất có 3 chữ số;
Digit: Chữ số; Once: Một lần.
23. Choose 4 digits, without repetition, from 1, 2, 5, 7 and
9 to form two 2-digit numbers and add them up. What is the
minimum value of the sum?
Digit: Chữ số; Without repetion: Không lặp lại; Form:
Ghép; 2-digit numbers: Số có 2 chữ số; Add: Cộng;
Minimum value: Giá trị nhỏ nhất; Sum: Tổng.
24.Among the following answers, how many 2-digit numbers
are there?
Answer: Kết quả; 2-digit number: Số có 2 chữ số.
9 + 12, 15 – 9, 68 + 29, 84 + 29, 5 + 4, 12 – 2
25.Which number below is the greatest?
Greatest: Lớn nhất.
20191982, 20192641, 2019845, 20099521