CBSE Class 8 Mathematics Practice Paper 2020-21

Class-VIII

Time- 2:30 Hour

Maximum Marks-80

All questions are compulsory.

A- Multiple choice questions-(10)

1- Which of the following is the square of even number?

a) 9

b) 36

c) 169

2- Which of the following is the perfect square a number?

a) 256

b) 362

c) 168

3- Which of the following is a unit place digit in a square of 258?

a) 2

b) 8

c) 4

4- The cube of (-4) is-

a) -16

b) 64

c) -64

5- The reversed number of 396 is-

a) 693

b) 936

c) 369

6- Which of the following is divisible by 6?

a) 193

b) 150

c) 635

7- Multiply of (-2x X 3y) is-

a) 6x

b) -6xy

c) 6xy

8- Divide 12x by 36 is-

a) 1/3

b) 3x

c) x/3

9- The HCF Of 3x and 12 is

a) 3

b) 3x

c) 12

10- (a-b) (a+b)=_______

a) (a-b)2

b) b2-a2

c) a2-b2

B. Fill in the blanks- 8

1- (a+b)2=a2+b2+_______

2- Generalized form of 96=_______

3- The next two numbers in 29, 25, 21, 17, 13,____,_____

4- The next two numbers in 1,3,9,27, 81,_____,_____

5- 300 angle is obtained by bisecting the ______angle.

6- The compliment of 850

7- 750 is the supplementary angle of________.

8- Profit %= (profit x 100) /________.

 

C. Very short answer type questions- 20

1- If 21x 5 is a multiple of 9, where x is a digit, what is the value of x?

2- Add- yx-yz, zy-zy, xz-xy

3- Subtract- (-5x3+x-11)-(6x3+x2-2x)

4- Find the area of a rectangle with the length and breadth respectively 5a2b, 5 b

5- Express 81 as the sum of first n odd numbers.

6- Find square root of 1156 by using long division method.

7- Find cube root of 5832 by prime factorization.

8- Regroup and factorize (ax-2b+bx-2).

9- Solve equation by using elimination method: 8y+3=27+2y.

10- Construct a quadrilateral ABCD where AB=3 cm, BC=4 cm, CD= 5 cm, AC= 6.5 cm and BD=7.5 cm.

D. Short answer type questions.(Do any 6) 18

1- Using suitable identities evaluate (49)2

2- If (x – )=10, find the value of (x2 + )

3- Factorise x2+3x-10

4- Factorise and divide (5x2-25x+20)÷ (x-4)

5- Using cross multiplication method solve this: =

6- The sum of the digits of a two digit number is 14. If the number formed in reversing the digits is less than the original lumber by 18. Find original number.

7- The cost of a chocolate is Rs. (2x + y). Tina bought 2(x + 2y) chocolates. Find the total amount paid by her in terms of x.

E. Long answer type questions (Do any 6) 24

1- In a school, number of boys are 160 more than the girls. If there are 45 girls in the school, find the number of girls in the school.

2- What is the single discount equivalent to two successive discounts of 50% and 50%.

3- Construct a rhombus PQRS. Given that PQ= 8 cm and / Q=750

4- Construct a square PQRS, the measure of whose one side is 7.6 cm.

5- The denominator of a rational number is less than its denominator than 5. If 5 is added to the numerator the new number becomes 11/6. Find the original rational number.

6- The area of a rectangle is 2x2-9x+10. If its breadth is (x-2) then find its length.

7- A positive number is 3 times another number. If 3 is added to the smaller number the difference between new number and greater becomes 31. What are the numbers?

By cbsepython

A complete solution for the students of class 9 to 12 having subject Information Technology (402), Computer Science (083). Explore our website for all the useful content as Topic wise notes, Solved QNA, MCQs, Projects and Quiz related to the latest syllabus.

Leave a Reply

Your email address will not be published. Required fields are marked *