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.

Câu 6:
4.8l of oil weigh 3.648kg. How many liters of oil are there if they weigh 4.864kg?
Answer: There are  liters
(Write your answer as a decimal in the simplest form)

Câu 7:
Inspecting products of a factory, we find that there are 97 qualified products out of every 100 products on average. What percent of the total products is qualified products?
Answer:  %

Câu 8:
A rectangular field has a width of 24.5m and its area equals the area of a square with the sides of 35m. Find the perimeter of that rectangular field.
Answer: m

Câu 9:
The area of a triangle ABC is , take the point M on BC such that BM=MC and the point N on AC such that AN=NC. Find the area of the triangle AMN.
Answer:  

Câu 10:
A store sold 902kg of rice which is 10.25% of the total amount of rice. How many kilograms of rice were there in that store at first?
Answer: There were  kilograms

ill in the blank with the suitable number

Question 1:
Find x such that x:6=13
Answer: x =

Question 2:
How many goldfish are there?

Answer: There are goldfish.

Question 3:
Convert: 6cm = mm

Question 4:
If x:5=32 then x =

Question 5:
There are six students in a drawing class. Each student draws a picture as same as the picture below. How many stars do they draw in all?


Answer: They draw stars in all.

Question 6:
The perimeter of the triangle below is cm

 

Question 7:
Jennifer has 4 chocolate boxes. There are 12 chocolate bars in each box. How many chocolate bars does she have?
Answer: She has chocolate bars.
 

Question 8:
Find y such that y:6=32:4
Answer: y =

Question 9:
A even 2 – digit number has a digit 4 in the tens place.It is greater than 46. What is it?
 Answer: It is

Question 10:
The product of 40 and a number, m, is a 2- digit number that greater than 40. The value of m is