GIẢI TOÁN TIẾNG ANH QUA MẠNG

Question 10: The distance between 2 trees is 300 meters. It will take a bird 30 seconds tofly between these 2 trees. How fast is the bird in kilometer per hour?

Exam number 2: Cóc vàng tài ba

Question 1: Which of following is correct?

a. 100 + 64 = 104 + 60

b. 100 + 64 = 140 + 6

c. 100 + 64 = 106 + 40

d. 100 + 64 = 10 + 64

Question 2: Write

The result is .........

a. 23,05

b. 23,0005

c. 23,005

d. 235

Question 3: Find the value of x such that x + 3/7 = 26/21

a. 7/21

b. 23/21

c. 23/14

d. 17/21

Question 4: Calculate: 23,61 x 4,23 = .........

a. 9987,03

b. 92,1403

c. 99,8703

d. 9214,03

Question 5: This shape is made of several small cubes. Find the surface area of the shape,if each side of small cube is 2cm long.

a. 96cm2

b. 104cm2

c. 208cm2

d. 144cm2

Question 6: In a school library, there are 101000 English books, 92683 Math books and216094 books of other subjects. How many books are there in the library?

a. 409777 books

b. 308777 books

c. 193683 books

d. 409667 books

Question 7: Find the next figure

Question 8: What is the difference between the sum of the first 2016 even naturalnumbers và the first 2016 odd natural numbers?

a. 4031 b. Năm nhâm thìn c. 4030 d. 2015

Question 9: Jack buys sofas from a wholesale market for $3750, và then he sells all ofthem at a loss of 4%. How much money did he sell each sofa for?

a. $3900 b. $156 c. $3600 d. $144

Question 10: A square picture was cut along the lines into 9 pieces. Which of thefollowing shapes below was missing piece?

Exam number 3: sắp tới xếp những giá trị theo thiết bị tự tăng dần

Đề thi Violympic Toán tiếng Anh lớp 5 vòng 9

Exam number 1: Choose the most suitable answer in 4 available answers. (Cóc tiến thưởng tài ba)

Question 1: Choose the calculation that has the greatest result.

a. 125,7 : 3 + 14,3

b. 365,5 : 5 - 17,8

c. 59,8 : 2 + 26,13

d. 196,4 : 4 - 7,07

Question 2: Peter counts his heart rate. He counts 8 beats per 6 seconds on average. How many beats per minute does Peter count?

a. 75 b. 140 c. 60 d. 80

Question 3: Which fraction is equal khổng lồ 17,5%?

a. 35/20 b. 7/40 c. 35/50 d. 175/100

Question 4: Mia wants khổng lồ buy apple. Which is the best buy?

a. 7kg of apples for $30,38

b. 5kg of apples for $21,5

c. 6kg of apples for $26,1

d. 4kg of apples for $17,32

Question 5: The product: trăng tròn x 21 x 22 x ..... X 40 has ....... Digit 0.

a. 4 b. 6 c. 5 d. 3

Question 6: Which shape is colored more than một nửa in green?

Question 7: If number A is increased by 60% then it will equal number B. How much percentage will B be decreased by khổng lồ equal A?

a. 40% b. 62,5% c. 37,5% d. 60%

Question 8: Find the smallest number that is 7 times the sum of its digits?

a. 28 b. 21 c. 14 d. 35

Question 9: Calculate:Choose the correct answer:

a. 767/768 b. 711/768 c. 255/256 d. 85/256

Question 10: How many fractions equal 1 tháng 5 and have denominators of 2 - digit numbers?

a. 16 b. 18 c. 22 d. 20

Exam number 2: Your oto has to pass 5 obstacles khổng lồ finish. In order to overcom each obstacle, you have khổng lồ answer correctly one of three problems in that obstacle. (Vượt chướng ngại vật)

Question 1: If and n is a natural number then n = ...........

Question 2:

The perimeter of the shape is ....... Cm.

Question 3: Find X if X x 8,6 - 5,2 x X - 11,06 = 5,94

Question 4: Calculate: 5,5 x (3,5 - 1,5) + 1,5 = ..............

Question 5: Calculate:

Exam number 3: Find the blank with the suitable number

(Note: write decimal number with the comma" between number part & fraction part. Ex: 0,5)

Question 1: 5,136m3 = ............ Cm3.

Question 2: 47/250 dm3 = ............. Cm3.

Question 3: The perimeter of a circle is 15,7dm. Its area is ....... Cm2.

Question 4: Jane bought a couch. A couch costs 950 dollars. She received a 30% discount. How much of a discount did she get?

Question 5: The ratio of the number of girls to the number of boys in a classroom is 5 : 4. When 10 girls left the classroom, the ratio of the number of boys to lớn the number of girls became 4 : 3. How many students were in the classroom at first?

Question 6: The area of a rectangle is 50m2. If it"s length is increased by 10% & it"s width is decreased by 20% then the area of new rectangle is ...............m2.

Question 7: An aquarium is 8dm deep, 12dm long và 0,3m wide. What is the volume of the aquarium in cubic centimeter?

Question 8:

The sum of all square"s area in the following figure is 375cm2. The area of the biggest square is ............ Dm2.

Question 9: At a các buổi party 60% of the boys are dancing with 80% of the girls. How many people are dancing if there are 35 people? (A pair cludes only one boy & one girl)

Question 10:

Look at the following figure. AF/AB = 1/4; AE/AC = 1/3. If the area of triangle GBD is 270m2 then the area of the triangle GCD is .......... M2.

Đáp án đề thi Violympic Toán giờ đồng hồ Anh lớp 5 vòng 9

Exam number 1: Choose the most suitable answer in 4 available answers. (Cóc vàng tài ba)

Question 1: a

Question 2: d

Question 3: b

Question 4: b

Question 5: b

Questionc 6: d

Question 7: c

Question 8: b

Question 9: d

Question 10: b

Exam number 2: Your oto has lớn pass 5 obstacles to lớn finish. In order khổng lồ overcom each obstacle, you have lớn answer correctly one of three problems in that obstacle. (Vượt vật cản vật)

Question 1: 25

Question 2: 80

Question 3: 5

Question 4: 12,5

Question 5: 4

Exam number 3: Find the blank with the suitable number (Note: write decimal number with the comma" between number part and fraction part. Ex: 0,5)

Question 1: 5136000

Question 2: 188

Question 3: 1962,5

Question 4: 285

Question 5: 45

Question 6: 44

Question 7: 28800

Question 8: 2

Question 9: 24

Question 10: 180

Đề thi Violympic Toán tiếng Anh lớp 5 vòng 8

Exam number 1: Đi search kho báu

Question 1: There are 40 students in Mrs. Brown"s class. 25% of her students received a B on the test. How many students received a B?

a. 10 b. 12 c. 18 d. 20

Question 2: What is the sản phẩm of 3.05 & 2.8?

a. 8.54 b. 8.056 c. 8.56 d. 8.054

Question 3: A clothing shop is having a 40% off sale. How much would Jane have to lớn pay for a $30 sweater with a 40% discount?

a. $18 b. $20 c. $50 d. $13

Question 4: If a pen costs $1.75 and an eraser costs $0.85, which of the following is the cost of 10 erasers và 5 pens?

a. $21.75 b. $26 c. $18.75 d. $17.25

Question 5: If the area of the rectangle ABCD is 60cm2 then the area of the trapezoid MNCD is ..........cm2.

a. 48 b. 50 c. 45 d. 54

Exam number 2: tra cứu cặp bằng nhau

Exam number 3: Fill in the blank with the suitable number

Question 1 The length of each edge of a cube is 3 cm. The surface area of the cube, in cm2, is .............

Question 2: At the beginning of the summer, Bob was 140 cm tall. At the kết thúc of the summer, he measured his height again và discovered that it had increased by 5%. Measured in cm, what was his height at the end of summer?

Question 3: The number of centimetres in 7.05 metres is ...............

Question 4: Bella scores on six of her eight pictures. The percentage of pictures that she does not score on is .........%.

Question 5: A bag contains green marbles và red marbles only. If the ratio of the number of green marbles khổng lồ the number of red marbles is 1:4 then ............% of marbles are green.

Question 6: How many even numbers between 1 & 100 are divisible by 5?

Question 7: Alice is going khổng lồ the store. One third of the way lớn the store, she stops to lớn talk with Kelly. She then continues for 6 km and reaches the store. How many kilometres does she travel?

Question 8: How many three-digit numbers are exactly 19 more than a two-digit number?

Question 9: In the 3×3 table shown, the numbers 2, 4 & 6 are placed so that each number occurs only once in each row và only once in each column. The value of M + N is ............

Question 10: How many different 3-digit whole numbers can be formed using the digits 4, 5, 0 & 8, assuming that no digit can be repeated in a number?

ĐÁP ÁN

Exam number 1: Đi search kho báu

Question 1: a

Question 2: a

Question 3: a

Question 4: d

Question 5: b

Exam number 2: kiếm tìm cặp bởi nhau

(1) = (6); (2) = (4); (3) = (12); (5) = (13); (7) = (10); (8) = (14); (9) = (20); (11) = (19); (15) = (17); (16) = (18)

Exam number 3: Fill in the blank with the suitable number

Question 1: 54

Chiều dài một cạnh của một khối lập phương là 3cm.

Diện tích mặt phẳng của khối lập phương là 3 x 3 x 6 = 54 (cm2)

Question 2: 147

Question 3: 705

Question 4: 25

Question 5: 20

Question 6: 9

Question 7: 9

Question 8: 19

Có bao nhiêu số gồm 3 chữ số mà to hơn một số gồm 2 chữ số 19 đơn vị?

Các số bao gồm 3 chữ số mà lớn hơn một số tất cả 2 chữ số 19 đơn vị là: 81; 82; 83; ........; 99

Số những số thỏa mãn nhu cầu là: (99 - 81) : 1 + 1 = 19 (số)

Đáp số: 19 số

Question 9: 6

Question 10: 18

Đề thi Violympic Toán tiếng Anh lớp 5 vòng 7

BÀI THI SỐ 1 – ĐẬP DẾ

Câu 6: Find x: x × 100 = 505

a/ x = 5.5 b/ x = 50.5 c/ x = 5.05 d/ x = 0.505

Hướng dẫn

x × 100 = 505

x = 505 : 100

x = 5.05

Chọn c

Câu 7: Calculate: 9.28 : 4 = …

a/ 2.3 b/ 2.32 c/ 2.23 d/ 2.33

Chọn b

Câu 8: What percentage is 35 of 40?

a/ 87.5% b/ 45% c/ 30.5% d/ 65%

Hướng dẫn

Tỉ số xác suất của 35 cùng 40 là: 35 : 40 x 100% = 87.5%

Chọn a

Câu 9: They are 40 students in the class 5A & 55% of them are boys. How many boys are there?

a/ 18 boys b/ 17 boys c/ 22 boys d/ 23 boys

Hướng dẫn

Chọn c

Câu 10: Calculate: tính: 11.5 x 4.5 = ….

a/ 517.5 b/ 51.75 c/ 44.75 d/ 447.5

Bài thi số 2 – ĐỪNG ĐỂ ĐIỂM rơi

Câu 1: Convert: 3dm2 = ….m2.

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Điền: 300

Câu 2: Calculate:

(Write your answer as fraction in simplest size a/b)

Điền: 1/2

Câu 3: Calculate: 8.57 – 2.1 = …

(Write your answer as decimal in simplest form)

Điền 6.47

Câu 4: Calculate: 3.23 + 3.6 = …

(Write your answer as decimal in simplest form)

Điền: 6.83

Câu 5: Convert: 2 tons 512 kilogam = …. Tons

(Write your answer as decimal in simplest form)

Điền: 2.512

Câu 6: Quang’s garden has 200 trees, including 78 mango trees and the rest are guava trees. What percentage of trees in Quang’s garden are mango trees?

Answer: ………%

Điền 39

BÀI THI SỐ 3 – LEO DỐC

Câu 1: Find x if: x + 9.37 = 31.04

A – 20.76 B – 23.67 C – 21.67 D – 39.41

Hướng dẫn

x + 9.37 = 31.04

x = 31.04 – 9.37

x = 21.67

Chọn C

Câu 3: Which of following numbers is divisible by 3?

A – 646 B – 327 C – 496 D – 523

Chọn B

Câu 4: Calculate: 0.025 x 400 = …

A – 25 B – 1 C – 100 D – 10

Câu 7: Find two numbers if their sum is 13.96 and their difference is 2.72

A – 7.62 và 6.34 B – 8.34 and 5.62

C – 8.27 và 5.69 D – 9.16 & 4.8

Hướng dẫn

Số khủng là: (13.96 + 2.72) : 2 = 8.34

Số bé xíu là: 8.34 – 2.72 = 5.62

Chọn B

Câu 10: If x x 302 = 64326 then x = ….64326 : 302 = 213

a/ 206 b/ 213 c/ 216 d/ 312

Chọn b

Câu 11: Find the value of x such that x + 47.92 = 89.27 .

Hướng dẫn

x + 47.92 = 89.27

x = 89.27 – 47.92

x = 41.35

Answer: x = 41.35

Đề thi Violympic toán tiếng Anh lớp 5 vòng 6

BÀI THI SỐ 1: SẮP XẾP

(14) 0.48 : 8 = 0.06

(10) 10% of 0.65 = 0.65 x 10% = 0.065

(27) 86.8% – 68.6% = 0.182

(11) The value of x such that: 6.5 x x = 7.65 x 2 – 16.5 x 75%

6.5 x x = 15.3 – 12.375

6.5 x x = 2.925

x = 2.925 : 6.5

x = 0.45

(23) 25% of 40% of 5 = 0.5

(8) Adam is currently 8 years old. In two years, Adam’s age will equal Brad’s current age. Find the ratio in percentage of Adam’s & Brad’s current age.

Adam hiện nay 8 tuổi. Trong hai năm nữa, tuổi của Adam sẽ bằng tuổi Brad hiện tại tại. Tìm tỷ lệ theo tỷ lệ xác suất của tuổi hiện tại của Adam và Brad.

Tuổi của Brad lúc này là: 8 + 2 = 10 (tuổi)

Tỉ lệ phần trăm của tuổi hiện tại của Adam cùng Brad là: 8 : 10 x 100% = 0.8

(15) 45% : 9% x 60% – (77.5% – 27.5%) x 30% x 20% = 3 – 0.03 = 2.97

BÀI THI SỐ 2: 12 con GIÁP

Câu 1: A station has 250 liters of oil. In the morning, it sells 22% of the oil. In the afternoon, it sells 15% of the remaining oil. How many liters of oil sold in total?

a/ 90.25 liters b/ 100.75 liters c/ 84.25 liters d/ 92.5 liters.

Chọn c

Câu 4: Calculate:A = 2 + 4 + 6 + 8 + … + 2002.

Answer: A = …..

Điền 1003002

Câu 5: The percentage of 45 & 60 is

Điền 75

Câu 7: A square piece of paper has side length of 0.4m. Hoa cuts the piece of paper into small squares with side length of 0.08m. How many the small squares are there?

a/ trăng tròn b/ 30 c/ 12 d/ 25

Chọn d

Bài 3 – LEO DỐC

Câu 1: trăng tròn people are needed to lớn tile floor in 3 days. How many people are needed khổng lồ tile floor in 5 days? (Everyone has the same productivity).

Answer: 12

Câu 2: Calculate: 4m 38cm + 3m 2dm = …m. (Write your answer as a decimal in the simplest form).

Answer: 7.58

Câu 3: Calculate: 72.31 + 27.64 + 41 = … (Write your answer as a decimal in the simplest form).

Answer: 140.95

Câu 4: Compare: 39.92 … 39.879.

Answer: >

Câu 5: Convert (đổi): 2.15km = …m.

Answer: 2150

Câu 6: Convert: 7km38m = …km. (Write your answer as a decimal in the simplest form).

Answer: 7.038

Câu 7: Convert: 8m 6dm = …m. (Write your answer as a decimal in the simplest form).

Answer: 8.6

Câu 8: Convert: 41m 25cm = …m. (Write your answer as a decimal in the simplest form).

Answer: 41.25

Câu 9: Convert: 600kg = …tonnes. (Write your answer as a decimal in the simplest form).

Answer: 0.6

Câu 10: Convert: 801cm = …m. (Write your answer as a decimal in the simplest form).

Answer: 8.01

Câu 11: Fill the suitable number in the following blank. 7cm220mm2 = …cm2. (Write your answer as a decimal in the simplest form).

Answer: 7.2

Câu 12: If a = 3.2, b = 4.9 and c = 6.8 then (a + b) + c = … (Write your answer as a decimal in the simplest form).

Answer: 14.9

Câu 38: Shane is 8 years old và his mother is 34 years old. How many years’ time will his mother’s age be 3 times his age?

Answer: 5 – lựa chọn B

Đề thi Violympic Toán tiếng Anh lớp 5 Vòng 5

Exam number 1: Choose the increasing value. (Chọn các giá trị theo sản phẩm công nghệ tự tăng dần)

Exam number 2:

Question 1: Convert 25m = ........... Km.

a. 250 b. 0,025 c. 2,5 d. 0,25

Question 2: 2m2 = .............. Dm2. The missing number is ............ A. 200 b. 200000 c. 2000 d. 20000

Question 3: Convert 3,25kg = ........... G.

a. 0,325 b. 325 c. 3250 d. 32,5

Question 4: Convert 340kg = .......... Ton.

a. 34 b. 3,4 c. 0,34 d. 0,034

Question 5: Convert 5.03m = ............cm.

a. 50,3 b. 0,503 c. 503 d. 5030

Question 6: How many natural numbers are there less than 7,23?

a. 8 b. 7 c. 5 d. 6

Question 7: How many odd numbers are there less than 54,91?

a. 55 b. 27 c. 26 d. 28

Question 8: How many even numbers are there less than 46,25?

a. 25 b. 47 c. 24 d. 23

Exam number 3: Fill in the blank with the suitable number.

Question 1: Convert 1m = ..........cm.

Question 2: Convert 1mm = ............ M

Question 3: If x is a natural number & 3,8 m > 78,54 then m = .......

Question 8: Use all the digits below to khung the decimal number that is smaller than 5.

2; 5; 9; 4; 8. How many such numbers are there?

Question 9: Fill in the blank with the suitable sign (>,

Question 10: =

Đề thi Violympic Toán giờ đồng hồ Anh lớp 5 vòng 2

Question 1: Find equal values. (Tìm những cặp giá trị bởi nhau)

Answer:

(2) = ...........; (4) = ..........; (5) = ..........; (8) = ..........; (9)= ..........; (11) = ..........; (13) = ..........; (14) = ..........; (15) = ........; (20) = .........;

Question 2:

Question 2.1:

Compare 7/9 .......... 2/3

Fill in the blank with the suitable sign (>,

Question 2.2: 11

Question 2.3: 125

Question 2.4: 2

Question 2.5: 375

Question 2.6: 6

Question 2.7: 72

Question 2.8: 2040

Question 2.9: 0

Question 2.10: 3333

Question 3:

Question 3.1: C. 9/20

Question 3.2: D. 4400

Question 3.3: B. 14/11

Question 3.4: D. 33

Đề thi Violympic Toán giờ đồng hồ Anh lớp 5 vòng 1

I. Tìm kiếm cặp bằng nhau

II. Đi kiếm tìm kho báu

Question 1: What is the perimeter of a rectangle with sides 5cm by 4cm?

Question 2: Find the sum of numbers that are greater than 50 in the following table.

Question 3: If subtracting 19 from the greatesst 2 - digit number and then dividing the difference by 4, we get the result ...

A) 19 B) trăng tròn C) 40 D) 20.25

Question 4: There are 38 students in the class 5A. The students can be sit at 11 tables with no empty seats. There are small table for 3 students & large tables for 4 students. How many small tables & large tables in the class?

Question 5: The perimeter of a square is 80cm. What is the measure of each side?

III. Sắp tới xếp các ô có mức giá trị tăng dần

Đáp án đề thi Violympic Toán giờ Anh lớp 5 vòng 1

I. Kiếm tìm cặp bằng nhau

(1) = (18); (2) = (15); (3) = (12); (4) = (8); (5) = (14); (6) = (17); (7) = (10); (9) = (16); (11) = 19); (13) = (20)