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Các bạn có thể tải toàn bộ Đề và đáp án từ vòng 1 đến vòng 4 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây hoặc đây.

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thaodo


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Các bạn có thể tải toàn bộ:

1- Đề và đáp án vòng 5 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây hoặc đây.

2- Đề và đáp án vòng 6 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây hoặc đây.

thaodo


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Các bạn có thể tải toàn bộ: Đề và đáp án vòng 7 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây.

Exam 1: Fill in the blank with the suitable number

Question 6:
8:46pm
The clock shows the last time Anna saw before she sleeps. She wakes up at 6:15am. How long did she sleep?
Answer: She slept 569 minutes.

Question 3:
42x11=462  

Question 1:
87x11=957

Question 4:
232x156=36192

Question 8:
300m2+400m2=70000dm2

Question 10:
Arrange the digits in the number 371059 to form a new number with the greatest value.
Answer: 975310

Question 10:
Calculate: 1+4+7+...+97=1617

Question 6:
Calculate: 77+93x11=1100

Question 1:
Calculate: 2015+99x2015=201500

Question 2:
Convert: 3m2=30000cm2
   
Question 2:
Convert: 200cm2=2dm2

Question 2:
The average of 248 and 316 is 282

Question 2:
Find x such that x:11=37
Answer: x= 407

Question 4:
If a=305 and b=481 then axb=146705

Question 5:
If m =8 and n=100 then the value of N = (225xm):n is 18

Question 9:
If the number 386a is divisible by 6 then a = 4

Question 6:
If the weight of 9 bags of rice is 126kg then the weight of 11 such bags is 154 kg.

Question 9:
Jack writes the consecutive natural numbers from 1 to 10 on a board. If he erases some of the numbers and adds up the remaining ones then he will get a sum of 30. The number of numbers that is erased on the board at most is 6

Question 8:
Jacob needs 11 erasers. Each of them cost 12 cents. How much change will he get back from 200 cents?
Answer: He will get back 68 cents.

Question 3:
Mary has 30 packs of candies. There are 11 candies in each pack. Mary has 330 candies in all.

Question 10:
Nick has 34 boxes of 11 marbles each. He gives his friend 15 marbles. How many marbles does he have left?
Answer: 359 marbles.

Question 10:
Peter added all odd numbers from 1 to 999. Jane added all even numbers from 2 to 1000. Then Mary subtracted Peter’s result from Jane’s result. Mary’s result is 500

Question 7:
Share 200 dollars for you and 4 your friends. Each person gets 40 dollars.

Question 7:
The area of the following square is 23104m2


Question 2:
The average of 248 and 316 is 282

Question 10:
The average of all even numbers that are smaller than 100 is 49

Question 10:
The average of three consecutive numbers is 33. Their product is 35904

Question 9:
The last digit of the product 9x11x13x...x37x39 is 5

Question 5:
The sum of two numbers is 156 and their difference is 12. What is the smaller number?
Answer: 72

Question 7:
The value of M = (125x4+500:2)x100 is 75000

Question 9:
What is the difference between the greatest and the smallest four-digit number that each formed by different digits?
Answer: 8853

Exam 2: Cóc vàng tài ba


Answer: B (hàng trên bên phải)

13000cm2 = …dm2. Answer: 130

A restaurant sells 11 boxes of fish, which has 15 fish in each box, and 16 boxes of shrimp in each box. How many seafood do they sell altogether? Answer: 645

Calculate 48 : (3 x4) =… Answer: 4

Calculate (63 – 27) : 9 =… Answer: 4

Calculate 205 x 3 + 205 x 7 =… Answer: 2050

Calculate 450000 : 500 =… Answer: 900

Find four odd digits that add together to make 30. How many ways can you find? Answer: 3

Find the value of x such that x x 42 = 714. Answer: 17

How many half hours make a day? Answer: 48

If the cost of 5kg of coffee is $160 then the cost of 8kg of coffee is... Answer: $256

If the sum of two numbers is 3756 and their difference is 1864 then the smaller number is… Answer: 946

John fogot the number people at volleyball game. He remembers that the number had a digit 5 in the tens place. Which of following number could John be thinking of? Answer: 1253

John has 15 candies and Tom has 31 candies. How many candies does Tom need to give to John so that each boy will have the same number of candies? Answer: 8

John wants to insert the number 4 between the digits of the number 2015 to make a smalleast five - digit number possible. Where should John insert the number 4? Answer: Between digit 1 and digit 5

Lucia had $100. She bought 7 erasers that cost $2 each and 8 notebooks that cost $7. How much change did she get? Answer: $30

Orange Hill is 578 feet high. Banana Hill is 235 feet high. How many feet higher is Orange Hill than Banana Hill? Answer: 343 feet

The average of 28, 63 and 56 is… Answer: 49

The average of 57 and M is 43. The value of M is… Answer: 29

The average of A, B and C is 48 and A is 8 less than the sum of B and C. The value of A is… Answer: 68

The average of all 2 - digit natural numbers which are divisible by 8 is… Answer: 56

The average of X and 763 is 918. The value of X is… Answer: 1073

The number of digits used to write all the page numbers in a book is 37. If the pages of the book are consecutively numbered from 1 then how many pages are there in the book in total? Answer: 23

The sum of two numbers is 359 and there are 54 even numbers between them. The greater number is… Answer: 234


Answer: 9

What is the time 20 minutes before 3:12 am? Answer: 2:52 am

Which of following number is divisible by 9? Answer: 54720


Answer: (1) and (3)

Write the following as a numeral nine hundred thousand. Answer: 900000

Write the numeral for: thirty - five thousand, six hundred and five. Answer: 35605

Exam 3: Sắp xếp

32x11=352229+127=356265+93=35833x11=363
843-478=365215+152=36734x11=374169+209=378
643-262=38135x11=38511x24+125=38911x38-28=390
2x25x8=40023x24-150=40237x11=4072040:5=408
3708:9=41220x21=42036x11+27=42317x25=425
(30x43):3=4302610:(2x3)=43522x20=440(25x89):5=445
(60x15):2=4504x23x5=4603x31x5=4659400:(4x5)=470
(100x19):4=47511x34+125=499  

thaodo


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Các bạn có thể tải toàn bộ: Đề và đáp án vòng 8 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây hoặc đây.

Exam 1: Đỉnh núi trí tuệ

16 biscuit packs weight 4 kilograms. How many grams is the weight of a biscuit packs? Answer: 250

An even number M is divisible by 5 if the last digit of M is … Answer: 0

Betty has 25 marbles. Andrrew has 7 marbles more than Carl. Carl has 9 marbles less than Betty. How many marbles does Andrrew have? Answer: 23

Calculate: 1350 : 45 = … Answer: 30

Calculate: 3640 : 14 = … Answer: 260

Convert: 4km2 = …m2. Answer: 4 000 000

Answer: 40

Find the value of b such that the number 73b4 is divisible by 9? Answer: 4

Find the value of x such that 81420 : x = 345. Answer: 236

Katie has 300 cakes. She gives 12 of them to each of five her friends. How many cakes are left over? Answer: 240

One pack of pencils has fifteen pencils. Four other packs have twenty pencils each. What is the total pencils in these five packs? Answer: 95

The 14 people at a party are 7 couples. Each man shakes hands with everyone except his own wife. No women shake hands with each other. What is the total number of handshakes among these 14 peoples? Answer: 63

Answering this question:
If there are two people at a party, they can shake hands once. There is no one else left to shake hands with, so there is only one handshake total.    

2 people, 1 handshake

If there are three people at a party, the first person can shake hands  with the two other people (two handshakes).  Person two has already  shaken hands with person one, but he can still shake hands with person  three (one handshake).  Person three has shaken hands with both of  them, so the handshakes are finished.  2 + 1 = 3.  

3 people, 3 handshakes

If there are four people at a party, person one can shake hands with  three people, person two can shake hands with two new people, and  person three can shake hands with one person.  3 + 2 + 1 = 6.  

4 people, 6 handshakes  Are you seeing a pattern?  If you have five people, person five shakes four other hands, person  four shakes three other hands, person three shakes two other hands,  and person two shakes one hand.  Another way to see it is,    

               
The 14 people at a party, they can shake hands 14(14-1)/2=91

Each man shakes hands with everyone except his own wife: 91-7=84

No women shake hands with each other: 84-((7x6):2)=63

The average of 27 and 69 is… Answer: 48

The number of fractions m/n such that m + n = 2016 is… Answer: 2016

The pages of a book are consecutively numbered from 1 to N. There are 636 digits are there in this numbering. The value of N is … Answer: 248

The perimeter of a rectangular garden is 120m. Its length is 40m. Find its with? Answer: 20

The sum of all 3 - digit numbers that are greater than 156 is... Answer: 487254

The sum of all natural numbers that are smaller than 500 and divisible by 5 is... Answer: 24750

The sum of two numbers is 124 and their difference is 36. What is the value of the larger number? Answer: 80

There are … five - digit numbers. Answer: 90 000

Twenty cups of coffee cost $40. Jane has to pay $... for thirty six such cups of coffe? Answer: 72

Using each of the digits 2, 3, 5 and 6 exactly once, form two 2 - digit number. What is the difference between the largest possible product and the smallest possible product of two such numbers? Answer: 62x53-25x36=2386

Which of following numbers is not divisible by 3? 273, 468, 587, 960. Answer: 587

Exam 2: Chọn cặp bằng nhau


The number of fractions a/b such that a + b = 2015 (=The greatest fraction a/b such that a - b = 2014)

The number of fractions a/b such that a + b = 2014 (=The greatest fraction a/b such that a + b = 2015)

Exam 3: Vượt chướng ngại vật


A Physical lab lasts one hour. What fraction of the lab is completed 35 minutes after it begins? Answer: 7/12

A store sells three different gift items costing 20 dollars, 40 dollars and 70 dollars, and three kinds of gift boxes costing 30 dollars, 50 dollars and 80 dollars. Helen buys one gift item and a gift box. How many different values can her total bill be? Answer: 6

Anh Vien was one of 18 athletes in the swimming team. They are numbered from 1 to 18. The sum of the numbers of the other 17 athletes is 155. What is Anh Vien number? Answer: 16

Joseph choose a whole number and multiplied it by nine. Which of the following numbers could not be his answer? Answer: 36363

One of the following two - digit number is attached at the and of 2016 to make a six - digit number. Which number is attached if six - digit number is divisible by 3, 4 and 7? Answer: 84

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






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? Answer: 15

There are four kids. If we compute the total ages of three of them at a time, the sums are 21, 24, 30 and 27 respectively. What is the difference in age between the oldest and the youngers among these four kids? Answer: 9

We want to cut a 28m wire into shorter wires of length 4m. We can only cut one piece of stick at a time. How many chi ủy trong sạch are required?  Answer: 6


What is the value of 5/3 - 3/2? Answer: 1/6

What is this fraction in the simplest terms? 27/36 = ?  Answer: 3/4


When 76 is divisible by a number, the remainder is 6. Which of following can not the value of that number? Answer: 5

Which list of numbers is ordered from least to greatest? 3/12, 2/3, 1/5, 3/4. Answer: 1/5, 3/12, 2/3, 3/4



thaodo


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Các bạn có thể tải toàn bộ: Đề và đáp án vòng 9 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây. hoặc đây.

Exam 1: Fill in the blank with the suitable number

Question 1:
What is the remainder when 65870 is divided by 8?
Answer: 6

Question 2:
What number should be placed in the box to make ?

Answer: 18

Question 3:
The expression 4x1000 + 5x100 + 4x1 is equal to 4504

Question 4:
Mya has 10000 dollars in bills of 40 dollars.How many 40 dollars- bills does she have?
Answer: 250 40 dollars- bills.

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: 4 dollars.

Question 6:
Five years ago, Sarah was 7 years old. Two years later, she will be 14 years old.

Question 7:
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 fewest. How many more oranges did Jack eat than Mary?

Answer: 5 oranges.

Chú ý:
Câu: “Mary ate the fewest oranges and Jack ate the fewest” không chính xác vì trên biểu đồ không có thể hiện hai người ăn ít nhất như nhau.
Do đáp án của chương trình là 5 nên câu trên có thể phải sửa lại là: “Mary ate the fewest oranges and Jack ate the greatest

Question 8:
The numbers from 1 to 1000 are written. How many of these numbers have at least two digits 5?
Answer: 28 numbers.

Question 9:
A fraction is equal to 2/5. The sum of its denominator and its numerator is 91. What is the difference between the denominator and numerator of this fraction?
Answer: 39

Bài giải chi tiết:
Tổng của tử số và mẫu số là 91
Tỉ lệ giữa tử số và mẫu số là 2/5
Tử số là (91 : 7 ) x 2 = 26
Mẫu số là (91 : 7 ) x 5 = 65
Hiệu của mẫu số và tử số là 65 - 26 = 39

Question 10:
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 45

Exam 2: Fill in the blank with the suitable number

A movie theatre has eleven rows of seats. The rows are numbered from 1 to 11. Odd - numbered have 14 seats and even - numbered row have 15 seats. How many seats are there in the theatre? Answer: 159

Bài giải chi tiết:
Số ghế của hàng lẻ là 14 x 6 = 84 (ghế)
Số ghế của hàng chẵn là 15 x 5 = 75 (ghế)
Tổng số ghế là 84 + 75 = 159 (ghế)
Đáp số: 159 (ghế)








Last year, Bob’s age is divisible by 7. This year, his age is divisible by 5. In how many years will Bob be 27 years old? Answer: 12


Ten million added to ten thousand equals … Answer: 10010000

The area of a rectangular garden is 36m2. Its has a length of 9m. its perimeter, in metres, is … Answer: 26










Exam 3: Cóc vàng tài ba

Anna scored 325 points during the badminton season. If her average point was 13 per game, how many games did she play? Answer: 25

If a machine produces 90 items in one minute, how many items would it produce in 20 second? Answer: 30


The average of five different natural number is 4. If the difference between the largest and smallest of these numbers is as large as possible, what is the average of the other three numbers? Answer: 2

Chú ý:
Câu: “If the difference between the largest and smallest of these numbers is as large as possible” có nghĩa là số lớn nhất trừ cho số nhỏ nhất thì bằng số lớn nhất.

Câu: “If the difference between the largest and smallest of these numbers is as large as possible, what is the average of the other three numbers?” có nghĩa là số lớn nhất trừ cho số nhỏ nhất thì bằng số lớn nhất và trung bình cộng của ba số còn lại là bao nhiêu? Vì đầu bài cho trung bình cộng của 5 số nên nếu ta bỏ số đầu và số cuối thì trung bình cộng của ba số còn lại cũng sẽ không thay đổi và vẫn bằng 4.

Do đáp án của chương trình là 2 nên câu trên có thể phải sửa lại là: “If the difference between the largest and smallest of these numbers is as large as possible, and if we erase the largest number and berfore of the largest number, what is the average of the other three numbers?”

The average of the number 21, 23, 25 and 27 is … Answer: 24




The perimeter of a rectangle is 3 times its length. If the perimeter is 120cm, the area of the rectangle is … Answer: 800 cm2

The value of 40 + 60000 + 500 + 30 is … Answer: 60570

thaodo


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Question 7:
Six students had an orange eating contest. The graph shows the number of oranges eaten by each student. Mary ate the most oranges and Jack ate the fewest. How many more oranges did Jack eat than Mary?

Answer: 5 oranges.

Chú ý:
Khi thi vòng tỉnh ngày 18/3/2016, đề của chương trình là: 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 fewest. How many more oranges did Jack eat than Mary? Đề này bị sai.

Vào lúc 16 giờ 30 ngày 28/3/2016, tôi thấy đề của chương trình đã sửa lại là "Six students had an orange eating contest. The graph shows the number of oranges eaten by each student. Mary ate the most oranges and Jack ate the fewest. How many more oranges did Jack eat than Mary?"

- Theo như đề này thì đáp án phải là 0 vì Mary ăn nhiều nhất, còn Jack ăn ít nhất.

- Tuy nhiên, đáp án của chương trình là vẫn là 5 nên câu trên có thể phải sửa lại là: “Jack ate the most oranges and Mary ate the fewest".
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thaodo


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Các bạn có thể tải toàn bộ: Đề và đáp án vòng 10 thi Toán tiếng Anh (Math ViOlympic) lớp 4 năm học 2015 - 2016 tại đây hoặc đây.

Exam 1: Cóc vàng tài ba


Bài giải chi tiết:
Ta nhận thấy tất cả các ô đen đều nằm trên hai đường chéo mà tổng số ô đen bằng 201. Suy ra số lượng ô đen trên 1 đường chéo là (201 + 1) : 2 = 101 (ô). Từ đó suy ra số lượng ô trên 1 cạnh là 101 ô.
Tổng số ô (cả trắng và đen) của hình vuông trên là 101 x 101 = 10201 (ô)
Vậy số lượng ô trắng là 10201 - 201 = 10000 (ô)

Anna bought 40 jellybeans. Which statement is INCORRECT? Answer: She can divide the beans equally into three groups.

Bob chose a natural number and multiplied it by four. Which of following numbers could not be his answer? Answer: 4846

Donald Trump has 10 grandchidren, all of different ages. Anna is the eldest. The sum of ages grandchidren is 190. At least how old is Anna? Answer: 24

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 numbers is… Answer: 14

In the following expression: 20 - 16 +7 : 36 x 12, if “+” means “x”; “-” means “+”; “:” means “-” and “x” means “:” then its value is… Answer: 129



Bài giải chi tiết:
Chọn F vì 2016 chia hết cho 7 và 14




Which of following numbers is smaller than 55606149 and larger than 55604896? Answer: 55605268

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

Question 1:
Fill the missing number in the blank
44444 = 40000 +400+ 4040 + 4

Question 2:
The average of 4, 8, x and 13 is 8. The value of x is 7

Question 3:
The following chart shows the number of fruits in a shop. There are 40 more oranges than peaches.


Question 4:
How many zero digits are there in ten million?
Answer: 7

Question 5:
The sum of two fractions 1/2 and 1/3 is a fraction with denominator of 12. Find its numerator
Answer: 10

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?
Answer: 3 kg.

Bài giải chi tiết:
Theo bài ra, ta có trung bình cộng của ba quả bí là (8 + 9 + 11) : 2 = 14 (kg)
Vậy quả bí quả nhẹ nhất là 14 - 11 = 3 (kg)

Question 7:
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 76

Bài giải chi tiết:
Số lượng viên gạch hình vuông bao quanh cái sàn nhà hình chữ nhật là (24 + 16) x 2 - 4 = 76 (viên)
Giải thích thêm: Ta lấy chu vi hình chữ nhật trừ cho 4 vì số lượng viên gạch ở 4 góc là trùng nhau

Question 8:
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?
Answer: 56 minutes.

Bài giải chi tiết:
Để cưa khúc gỗ thành 7 miếng, cần phải cưa 6 lần. Suy ra thời gian để cưa 1 lần là 42 : 6 = 7 (phút)
Để cưa khúc gỗ thành 9 miếng, cần phải cưa 8 lần. Vậy thời gian để cưa khúc gỗ thành 9 miếng là 7 x 8 = 56 (phút)

Question 9:
There are 3 children in a family,Jack,Mary and Peter.Mary can clean the house for 1 hour.Jack can do thesame job for 2 hours and Peter needs 6 hours. If they do the job together then they need 36 minutes.

Bài giải chi tiết:
Đặt a là thời gian họ làm chung công việc với nhau.
Theo bài ra, ta có: 1 + 1/2 + 1/6 = 1/a
Giải ra, ta được a = 3/5 giờ = 36 phút

Question 10:
MNPQ is a square that is made up of two identical rectangles and two squares of area 9 cm2 and 16 cm2. The area of the square MNPQ is 49 cm2.

Bài giải chi tiết:
Diện tích hình vuông thứ nhất là 9 cm2. Suy ra cạnh của nó là 3 cm
Diện tích hình vuông thứ hai là 16 cm2. Suy ra cạnh của nó là 4 cm
Do đó để MNPQ là hình vuông ta cần phải có thêm hai hình chữ nhật giống hệt nhau có chiều rộng bằng 3 cm và chiều dài bằng 4 cm
Suy ra diện tích của hình vuông MNPQ là 7 x 7 = 49 (cm2)

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