Find the sum of following numbers

Answer: 

Question 2:
Find the value of 
Answer: 

Question 3:
The sum of two numbers is 47 and their difference is 15. The smaller number is 

Question 4:
Fill missing number in the blank
54723+=27849+54723

Question 5:
Find y such that y – 12358=18031 
Answer: y=

Question 6:
There are 72 pages in a book. How many pages are there in 12 such books?
Answer: pages

Question 7:
If the perimeter of a square is 104m then its one side’s length is m

Question 8:
If a square has one side’s length is 12cm then its perimeter is cm

Question 9:
If  then a=

Question 10:
The perimeter of a rectangle is 36cm and its length is 6cm more than its width. Its area is  

Câu 8:
There are 1230 bottles in a factory. 289 of them are red. There are 259 more blue bottles than red bottles. The rest are purple bottles. How many purple bottles are there in the factory?
Answer: There are ......  purple bottles.

Câu 9:
Mark has 68 more books than Michael. Tom has 21 fewer books than Mark. They have 865 books in all. How many books does Mark have?
Answer: Mark has.....  books.

Câu 10:
Anna spent 472 dollars on food, 89 dollars on bus fares and saved 302 dollars. Tom had the same amount of money as Anna but he saved 38 more dollars than Anna. How much did he spend in all?
Answer: He spent .......  dollars.

Câu 5:
What is your answer if you add 32 tens and 18 ones to the difference of 5000 and 32 hundreds?
Answer: Your answer is 

Câu 6:
Subtract 85 from the sum of 2348 and 788. How many tens are there in the result?
Answer: 

Câu 7:
Find the difference between 10 thousands and 736 tens.
Answer: The difference is 

Câu 8:
Joanne is 28 years older than Melvin. Mabel is 16 years younger than Joanne. If Mabel is 43 years old, find the total age of them.
Answer:  years old.

Câu 9:
Mark has 68 more books than Michael. Tom has 21 fewer books than Mark. They have 865 books in all. How many books does Mark have?
Answer: Mark has  books.

Câu 10:
An MTR train left Kovan Station with 259 male and 678 female passengers. At Hougang Station, 588 passengers alighted and only 30 female passengers boarded the train. How many passengers were there in the train then?
Answer:  passengers.

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

TO SE TICK CHO AI NHANH VA DUNG