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 

The Game of Squares

Either boys or girls, usually aged from seven to ten, play the two-person game of"Mandarin's Box". They draw a rectangle on the ground and (1)……….. it into ten smallsquares called "rice fields" or "fish ponds”.

They also draw two additional semi-circular boxesat the two (2)………. of the rectangle, which are called"mandarin's boxes" - the game's name. Each person has 25 small pebbles and a bigger stone.

Each player places the stone in one of the mandarin's boxes and five small pebbles in each of the other squares. Then the game begins. The first player takes up the contents of one square on his or her side ofthe board, but not a mandarin's box and distributes the pebbles one by one, (3)……….. with the next square in (4)………. direction. Since each square contains five pebbles at the beginning, the first move will distribute five pebbles to the left or right.

After the last pebble is distributed, the player takes the contents of the following squareand repeats the distribution (5)………... But if the following square is one of the mandarin's boxes, the turn ends and passes to the other player.

If the last pebble falls into a square that precedes one empty square, the player wins all the contents of the square following the empty square and (6)……….these pebbles from the board. However, if there are two or more empty squares in a row, the player (7)…….. his or her turn.

Once a player has taken pebbles from the board, the turn is (8)……….to the other player. If all five squares on one player's side of the board are emptied at any time, that player must place one pebble he or she has aside back in each of the five squares so that the game can resume.

The game (9)………until the two mandarins' boxes have both been (10)……….. At the end of the game, the player with more pebbles wins, with each of the large stones counting as ten points.

Question 1

A.share

B.divide

C.separate

D.leave