de thi violympic toan tieng anh lop 4 vong 8

Đề thi Violympic Toán Tiếng Anh lớp 4 vòng 8 năm 2015 - 2016
Exam number 1: Đỉnh núi trí tuệ
Question 1: If x/7 = 45/63 then x = .............
Question 2: An even number M is divisble by 5 if the last digit of M is ............
Question 3: Find the area of the parallelogram below:

Question 4: Calculate: 6520 : 326 = .............
Question 5: Katie has 300 cakes. She gives 12 of them to each of five her friends. How
many cakes are left over
Question 6: Find the value of b such that the number 73b4 is divisible by 9?
Question 7: The sum of two numbers is 124 and their difference is 36. What is the value
of the larger number?
Question 8: One pack of pencils has fifteen pencils. Four other packs have twenty pencil
each. What is the total pencils in these five packs?
Question 9: The weight of green box is four times the weight of red box. Green box is
9kg heavier than red box. The weight of green box is ........... kg.
Question 10: The sum of all natural numbers that are smaller than 500 and divisible by 5
is ............
Question 10: The sum of all natural numbers that are smaller than 500 and divisible by 5
is ............
Exam number 2: Tìm cặp bằng nhau

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Exam number 3: Vượt chướng ngại vật
Question 1: The area of this parallelogram is ...........cm2.
a. 48

b. 20

c. 28

d. 35

Question 2: What is this fraction in the simplest terms?
27/36 = ..........
a. 9/4

b. 2/3

c. 3/4

d. 4/9

Question 2: What is this fraction in the simplest terms?
27/36 = ..........
a. 9/4

b. 2/3

c. 3/4

d. 4/9

Question 3: Which of the following lists the fractions 1/9; 2/7; 4/16; 2/9; and 1/8 in order
from the least to greatest?
a. 1/9 < 2/9 < 1/8 < 4/16 < 2/7
b. 1/9 < 2/9 < 1/8 < 2/7 < 4/16
c. 1/9 < 1/8 < 2/9 < 4/16 < 2/7
d. 1/9 < 1/8 < 2/9 < 2/7 < 4/16

Question 4: Peter is taller than Edward but shorter than Jacob. Charlie is taller than John
but shorter than Peter. Who is the tallest?
a. Jacob

b. Peter

c. Charlie

d. Edward

Question 5: The total weight of 3 apples is equal to that of 4 bananas, and the total weight
of 5 bananas is equal to that of 6 oranges. How many apples have the same total weight
as 24 oranges?

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a. 18

b. 16

c. 12

d. 15

Đáp án
Exam number 1: Đỉnh núi trí tuệ
Question 1: 5
Question 2: 0
Question 3: 40

Question 4: 20
Question 5: 240
Question 6: 4
Question 7: 80
Question 8: 95
Question 9: 12
Question 10: 24750
Các số tự nhiên nhỏ hơn 500 chia hết cho 5 là: 0; 5; 10; 15; ............; 495
Số các số tự nhiên nhỏ hơn 500 chia hết cho 5 là: (495 - 0) : 5 + 1 = 100 (số)
Tổng của chúng là: (495 + 0) x 100 : 2 = 24750
Exam number 2: Tìm cặp bằng nhau
(1) = (9); (2) = (15); (3) = (10); (4) = (12); (5) = (17); (6) = (13); (7) = (14); (8) = (11);
(16) = (18); (19) = (20)
Exam number 3: Vượt chướng ngại vật
Question 1: c
Question 2: c
Question 3: c
Question 4: a
Question 5: d

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