toan quoc te nha

Question 1:
There are two parallel lines in the figure. What is the value of x? 

 Answer: x = 

Question 2:


ABC and RTS are similar triangles.
The value of x is 

Question 3:
If x<0 and 5x+8+|3x|=0 then x=

Question 4:
I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?

Answer: 

Question 5:
How many triples of integers (a,b,c) are there such that 
 ? 
Answer:  triples.

Question 6:
Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a cat. Twenty students have a dog and 24 students have a cat. 
How many students have both a dog and a cat?
Answer:  students.

Question 7:
The sum of 2 positive integer numbers is greater than their product if the smaller number is 

Question 8:
How many different real numbers satisfy the following equation?
 
Answer: 

Question 9:
The area of trapezoid ABCD is 180   .The altitude is 8 cm,AD is 10 cm,and BC is 17 cm.
What is AB,in centimeters?

Answer:  cm.

Question 10:
There are 115 cars in a village of 26 families. Each family has either 4 or 5 cars. 
How many families have 4 cars? 
 Answer:  families.

1. How many two-digit numbers N have the property that the sum of N and the number formed by reversing the digits of N is a perfect square ?
2. The square SAMF has an area of 169. It contains two over lapping squares. The smaller of these sqares has an area that is one quarter of the larger of them, and the erea of their overlap is 4. What is the erea of the shaded region ?
3. In the diagram, each of the integers 1 through 9 is to be placed in one circles, both horizontal and diagonal, add to 18. The 6 and 1 have been filled in as shown. Determine the value of the number represented by x in the diagram. Justify your answer
4. How many digits does the number 20¹³ have ?

viet lai cau sau sao cho nghia khong doi :

1. how many students are there in your class?

 how many students does ...............................

2. the house is front of the tall trees.

  the tall trees ...............................

3. our school has forty students.

 there .....................................

 4. the bookstore is behind my house.

    my house .........................................

5. does phong`s school have forty classrooms?

  are .....................................................

6. our school has 1600 students .

  there are ............................

7. there are four people in her family .

 her family ........................................

8. my house is benhind the cinema.

 thec inema....................................

9. does your class have twenty five students?

 are ........................................................

10. the cat is in front of the television .

  the television ........................................

11. my class has thirty students.

  there are..................................... 

12. there are thirty students in my class. 

   my class ............................................

13. my school has two floor.

   there.............................................. 

viet lai cau sau sao cho nghia khong doi :

1. how many students are there in your class?

 how many students does ...............................

2. the house is front of the tall trees.

  the tall trees ...............................

3. our school has forty students.

 there .....................................

 4. the bookstore is behind my house.

    my house .........................................

5. does phong`s school have forty classrooms?

  are .....................................................

6. our school has 1600 students .

  there are ............................

7. there are four people in her family .

 her family ........................................

8. my house is benhind the cinema.

 thec inema....................................

9. does your class have twenty five students?

 are ........................................................

10. the cat is in front of the television .

  the television ........................................

11. my class has thirty students.

  there are..................................... 

12. there are thirty students in my class. 

   my class ............................................

13. my school has two floor.

   there.............................................. 

" There is no place like my home " . I live in a small house . To me , I've got a wonderful house . From the outside , it looks rather old with brick wall and tile roof , but it's very comfortable and cool house . 
There are 5 rooms : a living room , 3 bedroom and a kitchen.
The living room isn't very small with a long table and four chairs . There's a tea-tray on it for my parents to drink tea every day and to welcome guests .
Next , the two bedrooms are near together and next to the living-room . One is my parent and one is mine and brother . My bedroom is the place I like most . There are some my paintings draw on the wall . There is a wardrobe next to the bed . On the wall an air - conditioner . That is the place I always put my stuffed crocodile . I like cooking , so kitchen is one of my favorite rooms , too . There is a gas table and a refrigerator in the kitchen . And there is a lot of food such as fruits , eggs and vegetables ... I can learn how to cook any time. where is this our reunion family every evening. the garden behind my house are many flowers blooming by the daily care of my mother. house is the most peaceful place where every member gathers after a hard work day . I love my house very much.