Câu 1:
A tank contained 414l of honey,  of this amount was taken away. How many liters of honey are left?
Answer: ................................................ liters.

Câu 2:
There are 9 boxes of apples. Each box contains 35kg. If we take away 172kg from these boxes, how many kilograms of apples are left?
Answer: .................................... kilograms.

Câu 3:
Given fraction . If both its denominator and its numerator are increased by M units then the new fraction will equal to . The value of M is ..................................................

There are 42 students in Grade 5. Each student has to choose at least 1 favorite ball
game between basketball and volleyball. There are 29 students like playing basketball
and 28 students like playing volleyball.Find the number of students who likeboth ball
games.
Có 42 học sinh lớp 5. Mỗi học sinh phải chọn ít nhất 1 trò chơi bóng ưa thích giữa bóng rổ và
bóng chuyền. Có 29 học sinh thích chơi bóng rổ và 28 học sinh thích chơi bóng chuyền. Tìm số
học sinh thích chơi cả 2 môn bóng.
Kèm lời giải thích nhé!

Question 1:
Compare: 

Question 2:
Compare: A =  and B = 
Answer: A  B

Fill in the blank with the suitable number

Question 3:
Calculate: 
The value of A is 

Question 4:
Calculate: 
The value of A is 

Question 5:
Find two consecutive even numbers if the first number is  of the second number.
Answer: The second number is 

Question 6:
There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class.

Question 7:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer:  numbers

Question 8:
Calculate: 
The value of A is 

Question 9:
How many 3 - digit numbers are divisible by 2, 3 and 5?
Answer:  numbers.

Question 10:
If  then  is 

Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.

22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.

23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.

24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.

25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~

Fill in the blank with the suitable number

Question 1:
There are 49 students in a class. Boy students are  the number of girl students. There are  girl students in this class.

Question 2:
Calculate: 
The value of A is 

Question 3:
Calculate: 
The value of A is 

Question 4:
Jessica is 8 years old. Her grandmother is  of her age. How old is Jessica's grandmother?
Answer:  years old.

Question 5:
If the sum of denominator and numerator of a fraction is 52 and the denominator is 18 units more than the numerator then the numerator is 

Question 6:
Find two consecutive even numbers if the first number is  of the second number.
Answer: The second number is 

Question 7:
Calculate: 
The value of A is 

Question 8:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer:  numbers

Question 9:
If  then  is 

Question 10:
The sum of three consecutive even numbers is 960. The greatest numbers is 

Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~