Fill in the blank with the suitable number

Question 1:
Complete the table 
(Write your answer in the simplest form)

Answer: 

Question 2:
The denominator of the fraction  is 

Question 3:

The correct number fill in the box is 

Question 4:
Convert: kg = g

Question 5:
The sum of two numbers is 156 and their ratio is . The smaller number is 

Question 6:
Calculate:  
(Write answer in the simplest form)

Question 7:
The cost of 6 flowers is 8 dollars. How much does Mrs. Emily pay for 9 flowers? 
 Answer: She pays  dollars.

Question 8:

The correct number fill in the blank is 

Question 9:
The least common denominator of two fractions  and  is 

Question 10:
A square of side 8cm has the same perimeter as a rectangle. If the ratio of the width of the rectangle to its length is 1:3 then its area is  

1: the perimeter of a circle is 15,7 dm. Its's area is...cm2

2: 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 the number of girls became 4:3. How many students were in the classroom at first?

3: 47/250 dm3=...cm3

4: At the 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 and one girl)

5: An aquarium is 8dm deep, 12 dm long and 0,3 m wide. What is the volume of the aquarium in cubic centimeter?. Answer: the volume of the aquarium is...cm3