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10 tháng 3 2022

Phần bể chứa nước sau hai lần chảy là:

\(\dfrac{3}{5}+\dfrac{2}{7}=\dfrac{31}{35}\) (bể).

Phần bể chưa có nước là:

\(1-\dfrac{31}{35}=\dfrac{4}{35}\) (bể).

Đáp số: còn \(\dfrac{4}{35}\) bể chưa có nước.

15 tháng 4 2018

8 tháng 1 2019

9 tháng 12 2017

30 tháng 12 2022

mình làm xong rồi nhớ tick cho mình nghen !

phép thứ nhất
x*38 = 12568 - 8578

x*38 = 3990

x = 3990 : 38

=> x = 105

vậy x bằng 105


phép thứ hai
x + 34462 = 1876*25

x + 34462 = 46900

x = 46900 - 34462

=> x = 12438

vậy x = 12438


phép thứ ba
x : 245 = 17892 - 8976

x : 245 = 8925

x = 8925 x 245

=> x = 2186625

vậy x = 2186625 


phép thứ tư
x - 34462 = 7560 : 72

x - 34462 = 105

x = 105 + 34462

=> x = 34567

vậy x = 34567


phép thứ năm
3135 : x = 6987 - 6968

3135 : x = 19

x = 3135 : 19

=> x = 165

vậy x = 165
phép thứ sáu 
5679 - x = 154*7

5679 - x = 1078

x = 5679 - 1078

=> x = 4601

vậy x = 4601
phép tính thứ bảy
88168 : (5679 - x) = 107

5679 - x = 88168 : 107

5679 - x = 824

x = 5679 - 824

=> x = 4855

vậy x = 4855

Các bạn giải giúp mình giải bài toán tiếng anh nầy nhé!I.Question 1: How many days are there in September?Answer: There are .............. days.Question 2:Find x such that x : 5 = 1537Answer: x = ..........Question 3:Mary learns fifteen new words per day. How many new words does she learn for seven days?Answer: ......... days.II.Question 1:Calculate: 6723 - 2195 = ......... A. 4258 B. 4285 C. 4528 D. 4582Question 2:Emma is 14 years old. Her sister's age is 11 years more than her...
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Các bạn giải giúp mình giải bài toán tiếng anh nầy nhé!

I.

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.

II.

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 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
5
13 tháng 5 2017

tieng anh thi minh chiu nhung minh biet co nguoi giai duoc

13 tháng 5 2017

1, 30 days

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...
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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 )

1

cái này tui biết này ! tui cũng thi giải toán tiếng anh nhưng chỉ được cấp huyện còn cấp tỉnh ko biết   vòng huyện tui 780 điểm thời gian 441 giây và đạt giải nhì cậu ở hà nam hả tớ cũng thế 

27 tháng 11 2015

Tổng số nước ban đầu là : 3135 + 65 = 3200

bể thứ nhất mất số nước nhiều hơn bể 2 là : 25 - 20 = 5lít, sau 40 phút sẽ mất là : 5 x 40 = 200 lít

Vậy trước đó bể thứ nhất nhiều hơn bể 2 là 200 lít

Bài toán tổng hiệu. Bể 1 : (3200 + 200)/2= 1700;   Bể 2 : 1500

Thử : 1700 - 35 = 1665;   1500 - 30 = 1470

1665 + 1470 = 3135

1700 - (25*40)= 700 ;   1500 -(20* 40) =700

 

 

Question 1:The value of expression:  is ..................a. 1008b. 4007/2016c. 504d. 2017/2016 Question 2Which of following numbers is smaller than 55606149 and larger than 55604896?a. 55695346b. 55614186c. 55605268d. 55601982Question 3Anna 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...
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Question 1:
The value of expression:  is ..................

  • a. 1008
  • b. 4007/2016
  • c. 504
  • d. 2017/2016

 

Question 2

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

  • a. 55695346
  • b. 55614186
  • c. 55605268
  • d. 55601982

Question 3

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 4

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 5

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 6

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 7

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 8

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 9

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

 

 

Question 10

Fill the missing number in the blank.
44444 = 40000 + 400 + ............. + 4

Question 1

The average of 4, 8,  and 13 is 8. The value of  is .............

Question 2

How many zero digits are there in ten million? 
Answer: ...............

Question 3

The sum of two fractions  and  is a fraction with denominator of 12. Find its numerator.
Answer: ...................

Question 4

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: .............. kg.

Question 5

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: .................. minutes.

Question 6

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 7

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 8

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

 

 

 

Question 9

The four - digit number 5BB1 is divide by 9.
The value of B is ..........

Question 10

Which of the following diagrams is different from the others?

  • a. Figure B
  • b. Figure D
  • c. Figure C
  • d. Figure D

Question 1

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?
Answer: ........ tables.

Question 2

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
3
15 tháng 2 2017

bn nên vào Giúp tôi giải tiếng anh để hỏi ý còn ở đây là Toán tiếng Việt

15 tháng 2 2017

Mk thấy không hẳn là thế, ở đây rất nhiều các bạn hỏi các câu hỏi bằng toán Tiếng Việt mà, Toán tiếng Anh hay toán Tiếng Việt thì đều là toán chứ ?