Tổng hợp 1 số Đề thi Violympic Toán Tiếng Anh lớp 4
ĐỀ 1:
Bài 1: Fill in the blank with the suitable number
Question 1: How many hours are there in 4 days?
Question 2: Calculate: 672g – 276g = ........... g.
Question 3: How many years are in 3 century?
Question 4: There are ................ days in May.
Question 5: Emily write down how many kilometers she walked each day.

How many kilometers did she walk on Sunday?
Question 6: 765 + … = 459 + 541
The missing number is ..........
Question 7: Write forty-six thousand and fifty using digits.
Bài 2: Cóc vàng tài ba: Choose the most suitable answer in 4 available answers.
Question 1: 1/4 century = ........... years. The missing number is ..............
A. 20

B. 30

C. 25

Question 2: What time does the clock shown?

D. 15


A. 6: 20

B. 4: 06

C. 4: 30

D. 6: 25

C. 217

D. 227

Question 3: Find x such that x + 215 = 432
A. 657

B. 647

Question 4: 5kg = ........... g. The missing number is ...............
A. 5000

B. 50

C. 50000

D. 500

Question 5:

A. 75

B. 79

C. 77

D. 76


Question 6: 5250g + 1750g = ............kg. The missing number is ..............
A. 7

B. 100

C. 70

D. 10

Question 7: If m = 7 then 2000 x 3 + 2000 x m = ..........
A. 9000

B. 20000

C. 2000

D. 20000

Question 8: The average of 75 and M is 82. The value of M is ............
A. 89

B. 86

C. 85

D. 79

Question 9: Today is September 2nd, four days ago is ............
A. August 28th

Question 10:

B. August 30th

C. August 29th

D. August 27th


A. 6

B. 3

D. 5

C. 4

ĐÁP ÁN
Bài 1: Fill in the blank with the suitable number
Question 1: 96

Question 2: 396

Question 3: 300

Question 5: 8

Question 6: 235

Question 7: 46050


Question 4: 31

Bài 2: Cóc vàng tài ba: Choose the most suitable answer in 4 available answers.
Question 1: C

Question 2: C

Question 3: C

Question 5: C

Question 6: A

Question 7: B

Question 8: A

Question 9: C

Question 10: D

Question 4: A

Đề 2
Exam number 1: Fill in the blank with the suitable number.
Question 1:
How many days are there in September?
Answer: There are .............. days.
Question 2:

Find x such that x : 5 = 1537
Answer: x = ..........
Question 3:
Mary learns fifteen new words per day. How many new words does she learn for seven
days?
Answer: ......... days.
Question 4:


The area of the following rectangle is ............ cm2.

Question 5:
The perimeter of the following square is .................cm.

Question 6:
Calculate: (12639 + 21034) x 2 = ...........
Question 7:
Bella goes to the zoo. She makes a table of the number of animals at the zoo. (see the table
below)

How many monkeys and birds are there?
Answer: ...........
Question 8:
Calculate: 9876 : 6 x 6 = ..........
Question 9:


How many right angles are there?

Answer: There are ............ right angles.

Question 10:
There are 48 strawberries in 6 bags. How many strawberries are there in 9 bags?

Answer: There are ............. strawberries in 9 bags.
Exam number 2: Choose the most suitable answer in 4 available answers.
Question 1:
Calculate: 6723 - 2195 = .........


A. 4258



B. 4285



C. 4528



D. 4582

Question 2:
Emma is 14 years old. Her sister's age is 11 years more than her age. How old is Emma's
sister?
Answer: Emma's sister is ............. years old.


A. 25




B. 23



C. 13



D. 15

Question 3:


What time does the clock show?



A. 2 : 50



B. 2 : 10



C. 10 : 20




D. 10 : 10

Question 4:
Mary goes swimming in the morning. What time can she go swimming?


A. 10:00 a.m



B. 16:00



C. 6:00 p.m



D. 14:00

Question 5:
Which number can replace the question mark?
400 x ? + 800 = 2000


A. 3




B. 6



C. 30



D. 60

Question 6:
Find the value of x such that x + 1606 = 2357.
Answer: x = .........




A. 751



B. 715



C. 716




D. 761

Question 7:
Today is Thursday, December 17.
Which day of the week is the day before yesterday?


A. Wednesday



B. Tuesday



C. Friday



D. Saturday

Question 8:
Two numbers have the product of 9315. If the product is five times as same as the greater
number. The smaller number is ..........


A. 1863




B. 4



C. 1763



D. 5

ĐÁP ÁN
Exam number 1: Fill in the blank with the suitable number.
Question 1:
How many days are there in September?
Answer: There are .............. days.


30

Question 2:
Find x such that x : 5 = 1537
Answer: x = ..........


7685

Question 3:


Mary learns fifteen new words per day. How many new words does she learn for seven

days?
Answer: ......... days.


105

Question 4:
The area of the following rectangle is ............ cm2.



135

Question 5:
The perimeter of the following square is .................cm.



492

Question 6:
Calculate: (12639 + 21034) x 2 = ...........


67346

Question 7:
Bella goes to the zoo. She makes a table of the number of animals at the zoo. (see the table
below)



How many monkeys and birds are there?
Answer: ...........


539

Question 8:
Calculate: 9876 : 6 x 6 = ..........


9876

Question 9:
How many right angles are there?

Answer: There are ............ right angles.


5

Question 10:
There are 48 strawberries in 6 bags. How many strawberries are there in 9 bags?

Answer: There are ............. strawberries in 9 bags.


72

Exam number 2: Choose the most suitable answer in 4 available answers.

Question 1:
Calculate: 6723 - 2195 = .........


C. 4528


Question 2:
Emma is 14 years old. Her sister's age is 11 years more than her age. How old is Emma's
sister?
Answer: Emma's sister is ............. years old.


A. 25

Question 3:
What time does the clock show?



D. 10 : 10

Question 4:
Mary goes swimming in the morning. What time can she go swimming?


A. 10:00 a.m

Question 5:
Which number can replace the question mark?

400 x ? + 800 = 2000


A. 3

Question 6:
Find the value of x such that x + 1606 = 2357.
Answer: x = .........


A. 751

Question 7:
Today is Thursday, December 17.
Which day of the week is the day before yesterday?


B. Tuesday


Question 8:
Two numbers have the product of 9315. If the product is five times as same as the greater
number. The smaller number is ..........


A. 1863

ĐỀ 3
1)
36


The average of 46; 25 and 37

2) ¼ century = …
a) 15

years.

is ….

a) 38

b) 31

c) 35

d)

The missing number is …

b) 20

c) 30

d) 25

3) What time does the clock shown?
a) 6: 20

b) 6: 25


4) 5 kg = … g.
a) 50

c) 4: 30

d) 4: 06

The missing number is …
b) 5000

c) 500

d) 50000

5) In his English class, Harry has 5 tests. His scores is shown in the table below.
Test 1: 78;
a) 75

test 2: 67;
b) 77

test 3: 79;

test 4: 86;

c) 79

test 5: 75
d) 76\


6) Bella earns $40 per day. She will earn $... in 5 days.
a) 150

b) 200

c) 100

d) 45

7) The average of two number is 13. One of these number is the least 2-digit number. The
smaller number is …
a) 26

b) 16

c) 3

d) 10

8) The average of 75 and M is 82. The value of M is …
a) 79

b) 89

c) 86

d) 85

9) 36 minutes 23 seconds + … = 45 minutes 15 seconds. What time can fill in the

blank?

10)

a) 9 minutes 8 seconds

b) 8 minutes 8 seconds

c) 8 minutes 52 seconds

d) 9 minutes 52 seconds

Today is September 2nd. Four days ago is …
a) August 27th

b) August 28th

c) August 30th

ĐỀ 4
Exam number 1: Fill in the blank with the suitable sign (>, <, =)
Question 1:
4567/6789 ............ 3456/5678

d) August 29th


Fill in the blank with the suitable number:
Question 2:
Professor Ngo Bao Chau was born in 1972. He was born in the .......... th century.

Question 3:
1818/2727 of 2376 is ...........
Question 4:
Find x such that: x + 17 x 12 = 216
Answer: x = ...........
Question 5:
Three oranges are weighted in pairs and these weights are 400; 412; and 424 gram. What is
the weight of the lightest orange?
Answer: The weight of the lightest orange is .......... gram.
Question 6:
The area of a rectangle increased by 57cm2 when each side increases by 3cm. The
perimeter of the origial rectangle is ............. cm.
Question 7:
How many 4 - digit numbers can you make by using only 0 and 1?
Answer:
There are ......... numbers.
Question 8:
Some men meet at a conference. Each man shakes hands with each other exactly once. If
there are 4950 handshakes in total then the number of men is ..............
Question 9:
In the equation: N x U x (M + B + E + R) = 33, six letters are 6 distinct digits from 0 to 9.
What is the greatest possible value of the number NUMBER?
Answer: .............
Question 10:
The sum of the digits of all 2-digit numbers is .............
Exam number 2: Choose the most suitable answer in 4 available answers. (Cóc vàng tài ba)


Question 1:
Which of the following numbers can represent the question mark?




a. 48



b. 45



c. 54



d. 36

Question 2:
Which of the following numbers is divisible by 6?


a. 33332



b. 25760



c. 42378




d. 12357

Question 3:
Which of the following is the number 2,003,047?


a. Two million, three thousand, fourty seven



b. Two million, thirty thousand, four seven



c. Two million, three thousand, four seven



d. Two million, thirty thousand, fourty seven

Question 4:
Find the value of

The value of A is ..........





a. 1007



b. 4006/2015



c. 2015



d. 4002/2015

Question 5:
Jonn uses 1/3 of his land for growing apples, 1/4 for oranges, 1/5 for bananas and the
remaining 13 hectares for flowers. The total area of his land is ............ hectares.


a. 60



b. 70



c. 50




d. 80

Question 6:
Find the value of B = 2016 x 20152015 - 2015 x 20162015
Answer: The value of B is .........


a. 2015



b. 2016



c. 20152016



d. 20162015

Question 7:
The product of 2 natural numbers is 2015. Find the smallest possible sum of these two
numbers?
Answer: The smallest possible sum of these numbers is ...............


a. 96




b. 65



c. 408



d. 2016

Question 8:
Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12
hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours.
Peter needs ........ hours to complete this work by himself.




a. 18



b. 40



c. 24




c. 42

Question 9:
One chain with 3 links is 14cm long. Another chain made from 5 links of the same type is
22cm long. How long is a chain with 40 such links?
Answer: A chain with 40 such links is ............


a. 162cm long



b. 158cm long



c. 160cm long



d. 155cm long

Question 10:
Find the missing number x in the following number sequence:
2 9 18 25 x 57 114 121
Answer: x is ..........



a. 32



b. 34



c. 50



d. 45

Exam number 3: Vượt chướng ngại vật
Question 1:
Fill in the blank with the correct number
35km + 700cm = ......... m
Question 2:
765 - ........ = 123 x 2 + 276
The correct number filled in the blank is ...........
Question 3:


How many triangles in the following figure?

Answer: There are ................ triangles.
Question 4:
Find the value of digit x if 2006 < 20x5 < 2041 and 20x5 is divisible by 3?

Answer: The value of x is ................
Question 5:

Find the greatest natural number m such that:
Answer: m = ............

ĐÁP ÁN
Question 1:
4567/6789 ............ 3456/5678


>

Fill in the blank with the suitable number:
Question 2:
Professor Ngo Bao Chau was born in 1972. He was born in the .......... th century.


20

Question 3:
1818/2727 of 2376 is ...........


1584

Question 4:


Find x such that: x + 17 x 12 = 216

Answer: x = ...........


12

Question 5:
Three oranges are weighted in pairs and these weights are 400; 412; and 424 gram. What is
the weight of the lightest orange?
Answer: The weight of the lightest orange is .......... gram.


194

Ba quả cam được cân theo cặp và cân nặng cân được là: 400; 412 và 424g. Hỏi cân nặng
của quả cam nhẹ nhất là bao nhiêu?
Question 6:
The area of a rectangle increased by 57cm2 when each side increases by 3cm. The
perimeter of the origial rectangle is ............. cm.


32

Diện tích của một hình chữ nhật tăng thêm 57cm2 khi mỗi cạnh tăng thêm 3cm. Chu vi của
hình chữ nhật gốc là: .................cm.
Question 7:
How many 4 - digit numbers can you make by using only 0 and 1?
Answer:
There are ......... numbers.



8

Có bao nhiêu số có 4 chữ số được tạo thành từ 0 và 1?
Question 8:
Some men meet at a conference. Each man shakes hands with each other exactly once. If
there are 4950 handshakes in total then the number of men is ..............


100

Question 9:
In the equation: N x U x (M + B + E + R) = 33, six letters are 6 distinct digits from 0 to 9.
What is the greatest possible value of the number NUMBER?
Answer: .............


315420

Trong phép tính: N x U x (M + B + E + R) = 33, 6 chữ cái là 6 chữ số riêng biệt từ 0 đến 9.
Hỏi giá trị số lớn nhất có thể của chữ NUMBER là bao nhiêu?
Question 10:


The sum of the digits of all 2-digit numbers is .............


855

Tổng các chữ số của tất cả các số có 2 chữ số là: .........
Exam number 2: Choose the most suitable answer in 4 available answers. (Cóc vàng tài ba)

Question 1:
Which of the following numbers can represent the question mark?



a. 48

Question 2:
Which of the following numbers is divisible by 6?


c. 42378

Question 3:
Which of the following is the number 2,003,047?


a. Two million, three thousand, fourty seven

Question 4:
Find the value of

The value of A is ..........


a. 1007

Question 5:
Jonn uses 1/3 of his land for growing apples, 1/4 for oranges, 1/5 for bananas and the
remaining 13 hectares for flowers. The total area of his land is ............ hectares.



a. 60

Question 6:


Find the value of B = 2016 x 20152015 - 2015 x 20162015
Answer: The value of B is .........


a. 2015

Question 7:
The product of 2 natural numbers is 2015. Find the smallest possible sum of these two
numbers?
Answer: The smallest possible sum of these numbers is ...............


a. 96

Question 8:
Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12
hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours.
Peter needs ........ hours to complete this work by himself.


b. 40

Peter, Bob và Jack cùng làm một công việc. Nếu họ làm theo cặp: Peter và Bob có thể hoàn

thành nó trong vòng 12 giờ; Bob và Jack có thể hoàn thành trong 10 giờ; Jack và Peter có
thể hoàn thành trong 15 giờ. Peter cần ......... giờ để một mình hoàn thành công việc này.
Question 9:
One chain with 3 links is 14cm long. Another chain made from 5 links of the same type is
22cm long. How long is a chain with 40 such links?
Answer: A chain with 40 such links is ............


a. 162cm long

Question 10:
Find the missing number x in the following number sequence:
2 9 18 25 x 57 114 121
Answer: x is ..........


c. 50

Exam number 3: Vượt chướng ngại vật
Question 1:
Fill in the blank with the correct number
35km + 700cm = ......... m


35007

Question 2:
765 - ........ = 123 x 2 + 276
The correct number filled in the blank is ...........





243

Question 3:
How many triangles in the following figure?

Answer: There are ................ triangles.


15

Question 4:
Find the value of digit x if 2006 < 20x5 < 2041 and 20x5 is divisible by 3?
Answer: The value of x is ................


2

Question 5:

Find the greatest natural number m such that:
Answer: m = ............


6

ĐỀ 5
Exam number 1: Choose the most suitable answer in 4 available answers.


Question 1: The value of expression:

a. 1008

b. 4007/2016

is ..................

c. 504

Question 2: The area of the following rhomus is ............

d. 2017/2016


a. 6cm2

b. 12cm2

c. 120cm2

d. 60cm2

Question 3: Which of following numbers is smaller than 55606149 and larger than
55604896?
a. 55695346

b. 55614186


c. 55605268

d. 55601982

Question 4: Anna bought 40 jellybeans. Which statement is incorrect?
a. She can divide the beans equally into five groups.
b. She can divide the beans equally into groups of 2.
c. She can divide the beans equally into groups of 4.
d. She can divide the beans equally into three groups.
Question 5: Bob chose a natural number and multiplied it by four. Which of following
numbers could not be his answer?
a. 4846

b. 3756

c. 5924

d. 1736

Question 6: Suppose all counting numbers are arranged in columns as shown at the right.
Under what letter will the number 2016 appear?

a. F

b. C

c. E

d. B


Question 7: Given five numbers, the average of two numbers is 17 and the average of the
other three numbers is 12. The average of all these number is.............
a. 5/2

b. 29

c. 14

d. 29/2

Question 8: In the following expression: 20 - 16 + 7 : 36 x 12, if "+" means "x"; "-"
means "+"; ":" means "-" and "x" means ":" the its value is ..........
a. 82/3

b. 124

c. 19/3

d. 129


Question 9: Donald Trump has 19 grandchildrens, all of different ages. Anna is the eldest.
The sum of ages of all grandchildren is 190. At least how old is Anna?
a. 24

b. 20

c. 25

d. 19


Question 10: A square floor is tiled with congruent square tiles. The tiles on the two
diagonals of the floor are black. The rest of the tiles are white. If there are 201 black tiles
then the total number of white tiles is ............
a. 10000

b. 9799

c. 10203

d. 9600

Exam number 2: Fill in the blank with the suitable number
Question 1: The following chart shows the number of fruits in a shop. There are ............
more oranges than peaches.

Question 2: Fill the missing number in the blank. 44444 = 40000 + 400 + ............. + 4
Question 3: The average of 4, 8, and 13 is 8. The value of is .............
Question 4: How many zero digits are there in ten million?
Question 5: The sum of two fractions 1/2 and 1/3 is a fraction with denominator of 12.
Find its numerator.
Question 6: Three pumpkins are weighed in pairs in all possible ways. The weights of all
these pairs are 8kg, 9kg and 11kg. How much does the lightest pumpkin weight?
Question 7: It takes Jack 42 minutes to cut a long log of wood into seven pieces. How
long will it take him to cut that log of wood into nine pieces?
Question 8: The floor of a rectangular room is covered with square tiles. The room is 24
tiles long and 16 tiles wide. The number of tiles in the outer border of the floor
is ...............
Question 9: There are 3 children in a family, Jack, Mary and Peter. Mary can clean the
house for 1 hour. Jack can do the same job for 2 hours and Peter needs 6 hours. If they do

the job together then they need ........ minutes.


Question 10: MNPQ is a square that is made up of two identical rectangles and two
squares of area 9cm2 and 16cm2. The area of the square MNPQ is ............ cm2.
Exam number 3: Vượt chướng ngại vật
Question 1: What fraction of the circle is colored?

Question 2: The four - digit number 5BB1 is divide by 9. The value of B is ..........
Question 3: Which of the following diagrams is different from the others?

a. Figure B

b. Figure D

c. Figure C

d. Figure D

Question 4: In a restaurant, there are 17 tables, each with 3, 4 or 6 chairs. The tables with
3 or 4 chairs can accommodate 44 people. The restaurant can accommodate 74 people.
How many tables are there with 3 chairs?
Question 5: Bella thinks of two consecutive numbers in the range 1 to 6. She tells Alice
one of the numbers and Jack the other. Alice and Jack have the following conversation:
Jack: I don't know your number.
Alice: I don't know your number, too.
Jack: Now I know!
The pair of numbers which Bella think of could be ..............
a. 3 and 4


b. 4 and 5

c. 2 and 3

d. 5 and 6

ĐÁP ÁN
Exam number 1: Choose the most suitable answer in 4 available answers.
Question 1: c

Question 2: d

Question 3: c

Question 5: a

Question 6: a

Question 7: c

Question 4: d


Question 8: d

Question 9: a

Question 10: d

Exam number 2: Fill in the blank with the suitable number

Question 1: 40

Question 2: 4040

Question 3: 7

Question 5: 10

Question 6: 3

Question 7: 56

Question 8: 76

Question 9: 36

Question 10: 49

Question 4: 7

Exam number 3: Vượt chướng ngại vật
Question 1: 1/2

Question 2: 6

Question 4: 4

Question 5: d

Question 3: c


ĐỀ 6
Exam number 2:
Question 1: Convert 40kg = ...........g.
Question 2: Convert: 9050000g = .............. kg.
Question 3: Multiply 95 x 100 = ...............
Question 4: Multiply: 27635 x 6 = .............
Question 5: If x : 100 = 7200 then x = ................
Question 6: Calculate: 7 x 3109 + 3 x 3109 = ..............
Question 7: Sophia has three $100 notes. She also has six $10 notes and ten $2 notes.
How much money does she have in total?
Question 8: One pack of pencils has 11 pencils. Two other packs have 15 pencils each.
The total number of pencils in these three packs is .............. pencils.
Question 9: Find the value of x such that x : 7 = 3152
Question 10: The sum of two numbers is 372 and their difference is 102. The smaller
number is ...................
Exam number 3:
Question 1: Multiply: 147 x 20 = ............
a. 1470 b. 147 c. 294 d. 2940
Question 2: Which of following is true?
a. 30dm2 = 3000cm2 b. 5m2 = 50dm2
c. 40m2 = 4000cm2 d. 20dm2 = 2000cm2
Question 3: Which of following is the greatest?
a. 50cm2 b. 401cm2 c. 4dm2 10cm2 d. 4dm2
Question 4: If z : (20 - 1) = 38 then z = ..................
a. 272 b. 277 c. 727 d. 722
Question 5: Peter earns $15214 per month and Jane earns $14786 per month. How much
do they earn per 10 months together?
a. $300 b. $300000 c. $30000 d. $3000
ĐÁP ÁN

Exam number 1: Choose 2 consecutive cells which have the same or equal value.
(1) = (17); (2) = (8); (3) = (9); (4) = (5); (6) = (19); (7) = (18); (10) = (20); (11) = (15);


(12) = (14); (13) = (16)
Exam number 2:
Question 1: 40000 Question 2: 9050 Question 3: 9500
Question 4: 165810 Question 5: 720000 Question 6: 31090
Question 7: 380 Question 8: 41 Question 9: 22064
Question 10: 135
Exam number 3:
Question 1: d Question 2: d Question 3: c
Question 4: d Question 5: b
ĐỀ 7
Exam number 1: Fill in the blank with the suitable number (Note: write decimal number with "the
comma" between number part and fraction part. Ex: 0,5)
Question 1:
A pillow costs 20 dollars. Sophia has to pay ......... dollar for 12 such pillows.
Question 2:
How many hours are in 1/4 of two days?
Answer: .......... hours.
Question 3:
What could you add to 35 to make 60?
Answer: This number is ...............
Question 4:
A girl can play 66 notes every minute on average. She can play ........ notes in 20 minutes.
Question 5:
15 boxes of chocolate candies have 420 candies in the total. How many candies are there in each box?
Answer: .......... candies.
Question 6:

Angela is learning to play the violin. She practices 50 minutes a day on Tuesday and Thursday. On Saturday
she practices for one and a half hours. How much times per week Angela spend practicing violin?
Answer: .......... minutes.
Question 7:
There are ........... six - digit numbers.
Question 8: