Exam number 1: Fill in the blank with the suitable number Question 1: The expression is equal to .............. Đáp án của bạn Question 2: What number should be placed in the box to make? Đề thi Violympic Toán Tiếng Anh lớp 4 vòng 9 năm 2015 - 2016 Answer: ........... Đáp án của bạn Question 3: What is the remainder when 65870 is divided by 8? Answer: .............. Đáp án của bạn Question 4: Mya has 10000 dollars in bills of 40 dollars.How many 40 dollars- bills does she have? Answer: ............... 40 dollars- bills. Đáp án của bạn Question 5: A large box of candies and a small box of candies together cost 13 dollars. If the large box costs 5 dollars more than the small box, what is the price of the small box of candies? Answer: ............. dollars. Đáp án của bạn Question 6: Six students had an orange eating contest. The graph shows the number of oranges eaten by each student. Mary ate the fewest oranges and Jack ate the greatest. How many more oranges did Jack eat than Mary? Đề thi Violympic Toán Tiếng Anh lớp 4 vòng 9 năm 2015 - 2016 Answer: ............. oranges. Đáp án của bạn Question 7: The numbers from 1 to 1000 are written. How many of these numbers have at least two digits 5? Answer: .............. numbers. Đáp án của bạn Question 8: Five students do an exam with a maximum score of 50. The scores of four of the students are 41, 44, 46 and 49. The average of five students’ scores is the same as the score of the fifth student. The score of the fifth student is ............. Đáp án của bạn Question 9: Five years ago, Sarah was 7 years old. Two years later, she will be ............. years old. Đáp án của bạn Question 10: A fraction is equal to . The sum of its denominator and its numerator is 91. What is the difference between the denominator and numerator of this fraction? Answer: .............. Đáp án của bạn Exam number 2: Đi tìm kho báu Question 1: Nick has 3/5 of a dollar and Emma has 3/10 of a dollar. Together they have …………. a. $6/10 b. $8/10 c. $9/10 d. $15/10 Question 2: The value of 1/12 : 1/8 = …………. (Write your answer by fraction in the simplest form) Đáp án của bạn Question 3: The symbol Đề thi violympic toán tiếng anh lớp 4 vòng 9 is evaluated as 4 x 7 – 3 x 6 = 10. If Đề thi violympic toán tiếng anh lớp 4 vòng 9is evaluated as 29 then the number that should be replaced in the question mark is …………… Đáp án của bạn Question 4: The are of a rectangular garden is 36m2. Its has a length of 9m. Its perimeter, in metres, is …………….. Đáp án của bạn Question 5: Last year, Bob’s age is divided by 7. This year, his age is divisible by 5. In how many years will Bob be 27 years old? Answer: ……….. years. Đáp án của bạn Exam number 3: Cóc vàng tài ba Question 1: The value of 40 + 60000 + 500 + 30 is …………. a. 65070 b. 65430 c. 60570 d. 60543 Question 2: The average of the numbers 21, 23, 25 and 27 is ………………. a. 22 b. 23 c. 24 d. 26 Question 3: The perimeter of a rectangular is 3 times its length. If the perimeter is 120cm, the area of the rectangle is ………… a. 3200cm b. 800cm c. 800cm2 d. 3200cm2 Question 4: Which number should be replace the blank: Đề thi violympic toán tiếng anh lớp 4 vòng 9 a. 32 b. 96 c. 48 d. 24 Question 5: Sophia plants ten trees every three minutes. If she continues planting at the same rate, how long will it take she to plant 250 trees? a. 5/4 h b. 25h c. 3/4 h d. 75h Question 6: Anna scored 325 points during the badminton season. If her average point was 13 per game, how many games did she play? a. 25 b. 13 c. 26 d. 14 Question 7: If a machine produces 90 items in one minute, how many items would it produce in 20 second? a. 180 b. 20 c. 30 d. 60 Question 8: The digits 1, 2, 3, 4, 5 and 6 are each placed in one of the boxes so that the resulting product is correct. If each of the six digits is used exactly once, the digit represented by’?” is …………. Đề thi violympic toán tiếng anh lớp 4 vòng 9 a. 6 b. 2 c. 3 d. 4 Question 9: The average of five different natural numbers is 4. If the different between the largest and smallest of these numbers is as large as possible, what is the average of the other three numbers? a. 5 b. 2 c. 3 d. 6

giúp mình với mai mình kiểm tra rồi ( nhớ giải thích cách làm nhé )

Exam number 319:43

Fill in the blank with the suitable number

Question 1:
18:9=

Question 2:
63:9=

Question 3:
:9=5

Question 4:
90:9=

Question 5:
 of 45g is g

Question 6:
Anna puts 4 dollars in her piggy bank every Monday and Sunday. How many dollars will she put in nine weeks?
Answer: She will put  dollars.

Question 7:
 of 72g is 9g
The value of M is 

Question 8:
 of 54g is 9g
The value of N is 

Question 9:
When y is divided by 9, the quotient is 9 and has the remainder. If y is divisible by 5 then y=

Question 10:
When a three-digit number is divided by 9, the quotient is the smallest three-digit number and the remainder is 7. The number is 

Question 1:
The smallest odd multiple of 9 is 

Question 2:
K is a prime number and a multiple of 43. What is K?
Answer: K = 

Question 3:
How many prime numbers are less than 10? 
Answer: There are  numbers.

Question 4:
P is a prime number and a factor of 8. What is P?
Answer: P = 

Question 5:
A prime number between 42 and 46 is 

Question 6:
In the following numbers, which has the most factors?

Answer: 

Question 7:
The number 55 has  factors.

Question 8:
Find the sum of all the factors of 15
Answer: 

Question 9:
How many times does the digit “0” appear in numbers from 1 to 1000?
Answer: 

Question 10:
If m, n are consecutive odd numbers and  is divisible by 3 and 5 then m = 

Question 1:
The least common multiple of 330; 65; 15 is 

Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are  
(Write numbers in order from the least to the greatest and use ";")

Question 3:
The common factors of 18 and 27 are 
(Write numbers in order from the least to the greatest and use ";")

Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is 

Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=() 

Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times. 
Answer:The number is 

Question 7:
Calculate: 1×2+2×3+⋯+100×101=

Question 8:
The  term of the expression A=1-7+13-19+25-31+⋯ is 

Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=

Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is 

Fill in the blank with the suitable sign (>; =;<)

Question 1:
Compare: 3kg 50g  3500g

Question 2:
Compare: A =  and B = 
Answer: A  B

Fill in the blank with the suitable number

Question 3:
Calculate:  
(Write your answer in the simplest form)

Question 4:
Divide:  
(Write your answer in the simplest form)

Question 5:
 =  

Question 6:
The sum of denominator and numerator of a fraction is 91 and the fraction is equal to . The denominator of the fraction is 

Question 7:
The cost of eight spoons is 4 dollars. How much do 6 spoons cost?

Answer: 6 spoons cost  dollars.

Question 8:
6km 32m = …m
The missing number is 

Question 9:
In the following figure, ABED and BCFE are square. If the perimeter of the rectangle ACFD is 54cm then its area is  
 

Question 10:
The sum of the page number of the last 3 pages of a book is 369. What is the last page number?
Answer: The last page number is 

Question 1:
P is a prime number and a factor of 8. What is P?
Answer: P = 

Question 2:
The greatest even factor of 62 is 

Question 3:
The smallest multiple of 47 is 

Question 4:
K is a prime number and a multiple of 43. What is K?
Answer: K = 

Question 5:
The number 55 has  factors.

Question 6:
In the following numbers, which has the most factors?

Answer: 

Question 7:
In the following figure, AN = 5cm and AB = 8cm. NB = cm
 

Question 8:
Find the sum of all the factors of 19
Answer: 

Question 9:
Find  such that .
Answer: .

Question 10:
Find n such that n and n + 1 are factors of 40
Answer: n =