Question 1:
The least common multiple of 330; 65; 15 is 

Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are  
(Write numbers in order from the least to the greatest and use ";")

Question 3:
The common factors of 18 and 27 are 
(Write numbers in order from the least to the greatest and use ";")

Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is 

Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=() 

Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times. 
Answer:The number is 

Question 7:
Calculate: 1×2+2×3+⋯+100×101=

Question 8:
The  term of the expression A=1-7+13-19+25-31+⋯ is 

Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=

Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is 

In the figure below, x = Câu 2 Find the measure of angle J if \widehat{K}=29^o K =29 o and angle J and K are supplementary. Answer: \widehat{J}= J = ^o o . Câu 3 In the figure below, x = Câu 4 In the figure below, x = Câu 5 Solve: |2x-3|-4=3∣2x−3∣−4=3, where xx is a negative number. Answer: x=x= Câu 6 Calculate: 9+|-6|:1^2 =9+∣−6∣:1 2 = Câu 7 Compare: \dfrac{36}{27} 27 36 ​ \dfrac{4}{3} 3 4 ​ Câu 8 Find the negative number yy such that |y+\dfrac{7}{2}|-\dfrac{1}{2}=4∣y+ 2 7 ​ ∣− 2 1 ​ =4. Answer: y=y= Câu 9 Find xx such that \dfrac{32}{2^x}=2 2 x 32 ​ =2. Answer: x=x= Câu 10 Find nn such that \dfrac{(-4)^n}{64}=-16 64 (−4) n ​ =−16. Answer: n=n= Cần gấp nhé

Exam number 3

Fill in the blank with the suitable number

Question 1:
The sum of two numbers is 98 and their difference is 24. The greater number is 

Question 2:
Fill missing number in the blank
41165+23042=23042+

Question 3:
Fill missing number in the blank 
(32514+16257)+23459=+(16257+23459)

Question 4:
Calculate: 91625 – 27356= 

Question 5:
If a square has one side’s length is 12cm then its perimeter is cm

Question 6:
If the perimeter of a square is 104m then its one side’s length is m

Question 7:
Find x such that x+24360=41256
Answer: x=

Question 8:
Find y such that y – 12358=18031 
Answer: y=

Question 9:
Find the value of n such that 
Answer: n=

Question 10:
Find the value of b such that 
Answer: b=