Question 1:
The value of expression: is ..................
- a. 1008
- b. 4007/2016
- c. 504
- d. 2017/2016
Question 2
Which of following numbers is smaller than 55606149 and larger than 55604896?
- a. 55695346
- b. 55614186
- c. 55605268
- d. 55601982
Question 3
Anna bought 40 jellybeans. Which statement is incorrect?
- a. She can divide the beans equally into five groups.
- b. She can divide the beans equally into groups of 2.
- c. She can divide the beans equally into groups of 4.
- d. She can divide the beans equally into three groups.
Question 4
Bob chose a natural number and multiplied it by four. Which of following numbers could not be his answer?
- a. 4846
- b. 3756
- c. 5924
- d. 1736
Question 5
Suppose all counting numbers are arranged in columns as shown at the right. Under what letter will the number 2016 appear?
Question 6
Given five numbers, the average of two numbers is 17 and the average of the other three numbers is 12. The average of all these number is.............
Question 7
In the following expression: 20 - 16 + 7 : 36 x 12, if "+" means "x"; "-" means "+"; ":" means "-" and "x" means ":" the its value is ..........
- a. 82/3
- b. 124
- c. 19/3
- d. 129
Question 8
Donald Trump has 19 grandchildrens, all of different ages. Anna is the eldest. The sum of ages of all grandchildren is 190. At least how old is Anna?
Question 9
A square floor is tiled with congruent square tiles. The tiles on the two diagonals of the floor are black. The rest of the tiles are white. If there are 201 black tiles then the total number of white tiles is ............
- a. 10000
- b. 9799
- c. 10203
- d. 9600
Question 10
Fill the missing number in the blank.
44444 = 40000 + 400 + ............. + 4
Question 1
The average of 4, 8, and 13 is 8. The value of is .............
Question 2
How many zero digits are there in ten million?
Answer: ...............
Question 3
The sum of two fractions and is a fraction with denominator of 12. Find its numerator.
Answer: ...................
Question 4
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?
Answer: .............. kg.
Question 5
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?
Answer: .................. minutes.
Question 6
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 ...............
Question 7
There are 3 children in a family, Jack, Mary and Peter. Mary can clean the house for 1 hour. Jack can do the same job for 2 hours and Peter needs 6 hours.
If they do the job together then they need ........ minutes.
Question 8
MNPQ is a square that is made up of two identical rectangles and two squares of area 9cm2 and 16cm2. The area of the square MNPQ is ............ cm2.
Question 9
The four - digit number 5BB1 is divide by 9.
The value of B is ..........
Question 10
Which of the following diagrams is different from the others?
- a. Figure B
- b. Figure D
- c. Figure C
- d. Figure D
Question 1
In a restaurant, there are 17 tables, each with 3, 4 or 6 chairs. The tables with 3 or 4 chairs can accommodate 44 people. The restaurant can accommodate 74 people. How many tables are there with 3 chairs?
Answer: ........ tables.
Question 2
Bella thinks of two consecutive numbers in the range 1 to 6. She tells Alice one of the numbers and Jack the other. Alice and Jack have the following conversation:
Jack: I don't know your number.
Alice: I don't know your number, too.
Jack: Now I know!
The pair of numbers which Bella think of could be ..............
- a. 3 and 4
- b. 4 and 5
- c. 2 and 3
- d. 5 and 6
Từ 10 đến 19 có 9 số ko chứa chữ số 3.
Từ 30 đến 39 ,tất cả đều chứa chữ số 3.
Vậy số số có 2 chữ số ko chứa chữ số 3 là : 9x (9-1) =72 (số )
Vậy thôi , đáp số là 72. Ko chị giận đấy
tổng của 2 chữ số không bao gồm các chữ số 3