Dịch sang tiếng việt rồi giải

1. fraction\(\frac{6}{35}\)can be written as the product of two fractions of which the numerator and the denominator are one-digit postitve intergers

For instance: \(\frac{6}{35}=\frac{2}{3}.\frac{5}{7}\)

Look for different writtings.

2. Puzzle: there are a pairs of fractions that when we multiply or add them together, we recive the same results

For instance: the pair of fractions \(\frac{7}{3}\)and\(\frac{7}{4}\)has:

 \(\frac{7}{3}.\frac{7}{4}=\frac{7.7}{3.4}=\frac{49}{12}\) 

\(\frac{7}{3}+\frac{7}{4}=\frac{7.4+7.3}{12}=\frac{49}{12}\)

We ask you a riddle to find another pair of fractions having that property

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  

Câu hỏi 1:
The average of three numbers is 1988. The first number is 1984. The third number is 2 units more than the second number. Find the third number.

Câu hỏi 2:
The average of 5 consecutive odd numbers is 123. Find the greatest number.
Câu hỏi 3:
Which of the following fractions is equal to 2/3?

Câu hỏi 4:
The average of two numbers is 95. The first number is 2/3 of the second number. Find the first number
Câu hỏi 5:
Fill in the blank with the correct number: 6/100 kg = .... kg

Câu hỏi 6:
The sum of two fractions is 45/23 and the first fraction is one quarter of the second fraction. Find the first fraction.

Câu hỏi 7:
The sum of twonumbers is 463 and three are eighteen even numbers between these numbers. Find the greater number.

Câu hỏi 8:
Which of the following fractions is the greatest number?

Câu hỏi 9:
The average of two numbers is 95. The first number is 2/3 of the second number. Find these two numbers.

Câu hỏi 10:
The sum of the number of lions and monkeys in a zoo is 40 and lions are 1/3 the number of monkeys. How many monkeys are there in the zoo?
 

1.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? 

2.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?

3.The sum of two fractions 1/2 and 1/3 is a fraction with denominator of 12. Find its numerator

4.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 ?

5.The average of 4, 8, X and 13 is 8. The value of X is ?

6.How many zero digits are there in ten million?

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

8.There are 3 children in a family,Jack,Mary and Peter.Mary can clean the house for 1 hour.Jack can do thesame job for 2 hours and Peter needs 6 hours.If theydo the job together then they need ........... minutes.

9.MNPQ is a square that is made up of two identical rectangles and two squares of area 9 and 16CM² . The area of the square MNPQ is ? CM2

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