ĐỀ ôn THI VIOLYMPIC TOÁN TIẾNG ANH 1

Câu 1: Marie, Jony, Jake and Annie each has a similar cup of milk.. Answer: The answer is……… Câu 16: Lan thinks about a number.. If Lan add this number to the least 4-digit number with d

ĐỀ ÔN THI VIOLYMPIC TOÁN TIẾNG ANH VÒNG 8

CẤP HUYỆN - NĂM HỌC 2020 - 2021 Bài thi số 1: BỨC TRANH BÍ ẨN

Câu 6: Find the value of x such that: 76 : 4 + 85 : x = 24

Câu 10: Rich has 156 more stamps than Kenny Bobby has 88 more stamps than Rick.

The three boys have 1150 stamps in all How many stamps does Rick have?

a/ 250 stamps b/ 406 stamps c/ 494 stamps d/ 338 stamps

MÃ ĐỀ SỐ 2 Câu 1: 5kg = ……….g The missing number is………

Câu 5: Lucia had $100 She bought 7 erasers that cost $2 each and 8 notebooks that cost

$7 each How much change did she get?

Câu 6: The area of a square is equal to the area of the rectangle beside:

The perimeter of the square is ………cm

Câu 7: If z : (20 – 1) = 38 then z = …

Câu 8: Mrs Sophia need to buy 136 tomatoes If each bag of tomatoes has 8 tomatoes

then how many bags should she buy?

Câu 9: The greatest fraction among is

Câu 8: 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 inthe book in total?

Câu 1: Marie, Jony, Jake and Annie each has a similar cup of milk Marie drinks cup,

Jony drinks cup, Jake drinks cup and Annie drinks cup Who drinks the most milk?

Câu 2: Five boxes of chocolate candies are equivalent to nine hundred candies The

number of candies is the same for all boxes How many candies are there in each box?Answer: ………

Câu 3: What is the sum of 100 consecutive numbers from 1 to 100?

Answer: ………

Câu 4: Susan writes all the counting numbers, from 1 to 100, on a piece of paper She then

asks her sister to find the number of all the digits found on the paper The answeris…………

Câu 5: If then the value of x is …

Câu 6: Let a, b single digit numbers such that:

The value of a + b + 6 is …

Câu 7: The perimeter of a square is 36cm Its area is ……cm2

Câu 8: Given fractions Order those fractions from the largest to the smallest

Câu 12: Given of the sequence: 1, 4, 7, 10, 13, …The 2017th term is……

Câu 13: Find the value of A= 1 + 3 + 5 + 7 + + 99

Answer: The value of A is …

Câu 14: The difference of two numbers is 3256 If the minuend increases by 500 and the

subtrahend increases by 500, what will the new difference be?

Answer: The answer is ………

Câu 15: When Ha multiplies a number by 101, Ha forgets to write digit “0” of number

101 Therefore, the product decreases by 4500 units Find the correct product

Answer: The answer is………

Câu 16: Lan thinks about a number If Lan add this number to the least 4-digit number

with distinct digits, Lan will get a new number which is a greatest 4-digit number which is

a multiple of 10 The number Lan thinks about is………

Câu 17: Bob had a Maths lesson at 8:05 and it finished at 9:10 How long was the lesson?

Answer: ………minutes

Câu 18: The average of 18; 23; 28; 33; 38 is ……….

Câu 19: The number of months having 30 days is

Câu 20: A number is divisible by 4 has a quotient of 31 What is the number?

Answer: ………

Câu 21: If Martha saves $4 a day, she will use up all her money in 120 days How long

will she have the same amount of money if she decides to saves $6 a day?Answer: … days

Câu 22: A pen costs $15 Sophia has to pay … dollars for such 11 pens

Câu 23: What number could you add to 123 to make 2017?

Answer: …

Câu 24: David had some money His mother gave him $120 more He bought 3 shirts at

$47 each and spent $66 on food He then shared the remaining money out among his twosisters equally If his sisters received $30 each, how much money did David have at first? Answer: David had ………… dollars at first

Câu 25: For every camera a salesman sold, he would receive $35 For every 5 cameras he

sold, he would receive an extra $25 How many cameras did the salesman sell if hereceived $470?

Answer: …cameras

Câu 26: If is divisible by 9 then the value of a is

Câu 27: The correct digit to fill in the blank such that is divisible by 9 is

Câu 28: The average of 13 and Y is 21 The value of Y is …

Câu 29: The last digit of the product: 4 x 14 x 24 x …x 114 is …

Câu 30: If a + b = 279, a < b and there are 16 even numbers between a and b Then the

value of b is…

Câu 31: Tom has 36 pears, 20 mangoes and 48 oranges He packs each type of fruit into

packets of 4 Then he sold each packet of pears for $5, each packet of mangoes for $6 andeach packet of oranges for $2 How much did he earn from the sale of the fruit?

Answer: … …dollars

Câu 32: Jaffar bought 3 similar books Peter bought 2 similar pens and paid $12 less than

Jaffar If each book costs $6, how much do 48 such pens cost?

Answer: … …

Câu 33: John has 12 pencil cases There are 15 pencils in each pencil case John has …

……… pencils

Câu 34: 15dm2 + 25cm2 = ………….cm2 Fill the suitable number in the blank

Câu 35: Nora is 12 years than Jasmine Muthu is twice as old as Nora Their total ages is

108 years Find Nora’r age

Answer: Nora’s age is ………

Câu 36: If is divisible by 9 then the value of a is …

Câu 37: The sum of the greatest 4 – digit number and X is 12349 The value of X is … Câu 38: There were 348 people attended Family Day at the beach There were 248 less

children than adults There were 12 less women than men How many men were there?

Answer: … …

Câu 39: Amy, Kit Mun and Mimei shared a certain amount of money Amy received $120

more than Kit Mun Mimei received $246, which was twice the amount of money Kit Munreceived How much money did Amy receive?

Answer: Amy received …dollars

Câu 40: Alice gave 7 stamps to Benny but Charlotte gave 2 stamps to her After that,

Benny gave 3 stamps back to Alice and 8 stamps to Charlotte Finally, each of them had 18stamps How many stamps did Alice and Charlotte have altogether at first?

Answer: ………

Câu 41: When Tony spent $45, the amount of money he had left was 6 times the amount

of money Joanna had If Tony had $921 at first, how much did Joanna have left if shespent $4?

Answer: Joanna had left …dollars

Câu 42: A fruit grocer bought 28 baskets of mangoes Each basket contained 145

mangoes He gave away 360 mangoes to the poor and packed the remaining mangoes in packets of 4 How many packets did he have?

Answer: ……… packets

Câu 43: The last digit of the product: 4 x 14 x 24 x … x 114 x 124 is …

Câu 44: If a + b = 279, a < b and there are 16 odd numbers between a and b Then the

value of a is

Câu 45: The sum of two numbers is 3429 and their difference is 1397 Find the smaller

number

Answer: The smaller number is …

Câu 46: Fill in the blank with correct number: 2 days = ………… hour (s)

Câu 47 Fill in the blank with correct number: days = ………… hour (s)

Câu 48: When a whole number N is multiplied by 7, the last three digits of the product is

173 Find the smallest possible value of N

Answer: The number N is …………

Câu 49: 12 boxes of chocolate candies are equivalent to 960 candies The number of

candies is the same for all boxes How many candies are there in each box?

Answer: … …

Câu 50: There are 20 teams in the North Zonal Volleyball League Each team must play

exactly one match with another team How many matches are to be played altogether inthe league?

The number of matches is ………

Câu 51: King Middle School has 1200 students Each student takes 5 classes a day Each

teacher teaches 4 classes Each class has 30 students and 1 teacher How many teachers arethere at King Middle School?

Câu 52: Alan, Beth, Carlos and Diana were discussing their possible grades in

mathematics class this grading period Alan said: “If I get an A, then Beth will get an A”

Beth said: “If I get an A, then Carlos will get an A” Carlos said: “If I get an A, then Dianawill get an A” All of these statements were true, but only two of the students received an

A Who got A?

A/ Beth, Diana B/ Alan, Beth C/ Carlos, Diana D/ Beth, Carlos

Câu 53: If then the value of y is…

Câu 54: The value of a such that is divisible by 2 and 5 is …

Câu 55: What number could you add to 45 to make 87?

Answer: … …

Câu 56: If = then the value of x is….

Câu 57: Rosana sews 234 buttons on dresses in a day How many buttons will she have

left after 5 weeks if she has 22340 buttons at first?

Answer: … …

Câu 58: The correct digit to fill in the blank such that is divisible by 9 is

Câu 59: May wants to buy a radio which costs $138 She also wants to buy a television

set which costs five times as much as the radio If May bought only the television set, she would be short of $249 How much more money does May need to be able to buy both the television set and the radio?

Answer: … …

Câu 60: Joachim subtracts 45 from a certain number and multiply the answer by 5 Then

he divide the answer by 6 to get 125 What is the number?

Answer: ………

The sum of all 2 – digit numbers do not

include the digit 3 tổng của tất cả các

Tổng của tất cả các số có 2 chữ số là: (10 + 99) x 90 : 2 = 4905

Tổng của tất cả các số có 2 chữ số mà có chữ số 0 là:

10 + 20 + 30 + 40 + 50 + 60 + 70 + 80 + 90 = 450

Tổng cần tìm là: 4905 – 450 = 4455 BÀI THI SỐ 2 – CUỘC ĐUA CÚN CƯNG

Câu 4: A wire is 50m long How many centimeters long is it?

Một cuộn dây dài 50m Hỏi cuộn dây đó dài bao nhiêu xen ti mét?

Hướng dẫn: Đổi: 50m = 5000cm

Chọn A

Câu 5: How many minutes make up 13 hours?

Bao nhiêu phút tạo lên 13 giờ?

Câu 8: Bella earns $40 per day She will earn $ ….in 5 days.

Bella kiếm được 40 đô la mỗi ngày Cô ấy kiếm được ……….đô la trong 5 ngày

Câu 10: Rich has 156 more stamps than Kenny Bobby has 88 more stamps than Rick.

The three boys have 1150 stamps in all How many stamps does Rick have?

Rich có nhiều hơn Kenny 156 cái tem Bobby có nhiều hơn Rick 88 cái tem Ba bạn trai có tất cả 1150 cái tem Hỏi Rick có bao nhiêu cái tem?

a/ 250 stamps b/ 406 stamps c/ 494 stamps d/ 338 stamps

Câu 2: When 47 is divided by 3, the remainder is ……….

Khi chia 47 cho 3, số dư là: 47 : 3 = 15 dư 2

Câu 5: If is divisible by 9 then the value of c is …………

Câu 6: If M = a x (b + c) then which of following is true?

Nếu M = a x (b + c) thì đáp án nào dưới đây đúng?

a/ M = a x b + b x c b/ M = a x b + a x c

c/ M = a x c + b d/ M = a x b + c

Chọn b

Câu 7: If the cost of 5kg of coffee is $160 then the cost of 8kg coffee is …

Phí của 5kg cà phê là 160$ thì phí của 8kg cà phê là: ……đô.

Câu 8: Barbara has 12 apples She cut each apple into 8 pieces How many pieces are

Câu 3: Write the numeral for: thirty – five thousand, six hundred and five.

Viết số: ba mươi – lăm nghìn, sáu trăm và năm.

c/ d/

Chọn a

Câu 5: Lucia had $100 She bought 7 erasers that cost $2 each and 8 notebooks that cost

$7 each How much change did she get?

Lucia có 100$ Cô ấy mua 7 cái tẩy có giá 2$ mỗi cái và 8 quyển vở với giá 7$ mỗi quyển Hỏi cô ấy được trả lại bao nhiêu tiền?

Câu 6: The area of a square is equal to the area of the rectangle beside:

Diện tích một hình vuông bằng diện tích hình chữ nhật dưới đây

The perimeter of the square is Chu vi hình vuông là………cm

Câu 8: Mrs Sophia need to buy 136 tomatoes If each bag of tomatoes has 8 tomatoes

then how many bags should she buy?

Câu 3: Which of following number is divisible by 9?

Số nào dưới đây chia hết cho 9? (tổng các chữ số chia hết cho 9)

Chọn b

Câu 4: In 496235, what is the value of the digit in the hundreds place?

Trong số 496235, giá trị của chữ số hàng trăm là?

Chọn a

Câu 5: The cost of a calculator is $15 The cost of 30 calculators is $

Giá của một cái máy tính là 15$ Giá của 30 cái máy tính là … $

Hướng dẫn

Giá của 30 cái máy tính là: 30 x 15 = 450 ($)

Chọn c

Câu 6: The average of 75 and M is 82 The value of M is ….

Trung bình cộng của 75 và M là 82 Giá trị của M là: ….

Hướng dẫn: Giá trị của M là…… 82 x 2 – 75 = 89

Câu 8: 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 inthe book in total?

Số chữ số sử dụng để viết tất cả các số trang trong một cuốn sách là 37 Nếu các trang của cuốn sách là các số tự nhiên liên tiếp bắt đầu từ 1 thì quyển sách đó có bao nhiêu trang?

BÀI THI SỐ 3 – LEO DỐC

Câu 1: Marie, Jony, Jake and Annie each has a similar cup of milk Marie drinks cup,

Jony drinks cup, Jake drinks cup and Annie drinks cup Who drinks the most milk?

Marie, Jony, Jake và Annie mỗi người có một cốc sữa giống nhau Marie uống cốc, Jony uống cốc, Jake uống cốc và Annie uông cốc Hỏi ai đã uống nhiều sữa nhất?

Hướng dẫn

Ta có: và nên Marie uống nhiều sữa nhất

Chọn c

Câu 2: Five boxes of chocolate candies are equivalent to nine hundred candies The

number of candies is the same for all boxes How many candies are there in each box?

5 hộp kẹo sô cô la có 900 cái kẹo Số kẹo mỗi hộp là như nhau Hỏi mỗi hộp có bao nhiêu cái kẹo?

Hướng dẫn

Mỗi hộp có số kẹo là: 900 : 5 = 180 (cái)

Answer: 180

Câu 3: What is the sum of 100 consecutive numbers from 1 to 100?

Tổng của 100 số tự nhiên liên tiếp từ 1 đến 100 là gì?

Hướng dẫn

Tổng = (100 + 1) x 100 : 2 = 5050

Điền 5050

Câu 4: Susan writes all the counting numbers, from 1 to 100, on a piece of paper She then

asks her sister to find the number of all the digits found on the paper The answeris…………

Susan viết tất cả các số đếm từ 1 đến 100 lên một mảnh giấy Cô ấy yêu cầu chị cô ấy tìm

số tất cả các chữ số tìm được trên tờ giấy Câu trả lời là…

Câu 5: If then the value of x is …

If Nếu = then the value of x is giá trị của x là: 12 : 4 x 3 = 9

Câu 6: Let a, b single digit numbers such that Đặt a, b là số có 1 chữ số biết rằng:

The value of a + b + 6 is Giá trị của a + b + 6 là…

a/ 18 b/ 12 c/ 11 d/ 15

Hướng dẫn

Ta có: 6 + b = 6 suy ra b = 0

b + a = 5 hay 0 + a = 5 suy ra a = 5Vậy a + b + 6 = 5 + 0 + 6 = 11

Chọn c

Câu 7: The perimeter of a square is 36cm Its area is ……cm2

Hướng dẫn

Cạnh hình vuông là: 36 : 4= 9 (cm)

Diện tích hình vuông là: 9 x 9 = 81 (cm2)

Điền 81

Câu 8: Given fractions Order those fractions from the largest to the smallest

Câu 13: Find the value of tìm giá trị của A= 1 + 3 + 5 + 7 + + 99

Answer: The value of A is Giá trị của A là ….

Hướng dẫn

A= 1 + 3 + 5 + 7 + + 99 = (99 + 1) x [(99 – 1) : 2 + 1] : 2 = 100 x 50 : 2 = 2500

Câu 14: The difference of two numbers is 3256 If the minuend increases by 500 and the

subtrahend increases by 500, what will the new difference be?

Hiệu của hai số là: 3256 Nếu số trừ tăng lên 500 và số bị trừ tăng 500, thì hiệu mới sẽ là gì?

Answer: The answer is ………

Hướng dẫn

Hiệu mới là: 3256 – 500 + 500 = 3256

Điền 3256

Câu 15: When Ha multiplies a number by 101, Ha forgets to write digit “0” of number

101 Therefore, the product decreases by 4500 units Find the correct product

Khi Hà nhân một số với 101, Hà quên viết chữ số 0 của số 101 Do đó, tích giảm 4500 đơn vị Tìm tích đúng

Answer: The answer is………

Câu 16: Lan thinks about a number If Lan add this number to the least 4-digit number

with distinct digits, Lan will get a new number which is a greatest 4-digit number which is

a multiple of 10 The number Lan thinks about is………

Lan nghĩ ra một số Nếu Lan cộng số nhỏ nhất có 4 chữ số khác nhau thì Lan sẽ được một

số mới là số lớn nhất có 4 chữ số và là bội số của 10 Số Lan nghĩ là: …

Hướng dẫn: Bội số của 10: Chia hết cho 10

Số lớn nhất có 4 chữ số mà là bội số của 10 là: 9990

Số nhỏ nhất có 4 chữ số khác nhau là: 1023

Số Lan nghĩ là: 9990 – 1023 = 8967

Điền 8967

Câu 17: Bob had a Maths lesson at 8:05 and it finished at 9:10 How long was the lesson?

Bob có một bài kiểm tra Toán lúc 8:05 và kết thúc nó lúc 9:10 Hỏi bài kiểm tra đó bao nhiêu phút?