Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions for Mathematics

Factorise. 

x² + xy + 8x + 8y

Factorise.

15xy − 6x + 5y − 2

Factorise.

ax + bx − ay − by

Factorise.

15pq + 15 + 9q + 25p

Factorise.

z − 7 + 7xy − xyz

Find the values of the letters in each of the following and give reasons for the steps involved.

     3 A

 +  2 5

-------

    B 2

-------

Find the values of the letters in the following and give reasons for the steps involved.

   4 A

+ 9 8

------

C  B 3

------

Find the value of the letter in the following and give reasons for the steps involved.

  1 A

  x A

------

  9 A

------

Find the values of the letters in the following and give reasons for the steps involved.

   A B

+ 3 7

------

   6 A

------

Find the values of the letters in the following and give reasons for the steps involved

   A  B

   x  3

-------

C  A  B

-------

Find the values of the letters in the following and give reasons for the steps involved.

   A  B

   x  5

-------

C  A B

------- 

Find the values of the letters in the following and give reasons for the steps involved.

   A  B

   x   6

-------

 B  B  B

-------

Find the values of the letters in the following and give reasons for the steps involved.

   A  1

+ 1  B

-------

   B  0

-------  

Find the values of the letters in the following and give reasons for the steps involved.

  2  A  B

+ A  B  1

---------

   B  1  8

----------

Find the values of the letters in the following and give reasons for the steps involved.

   1  2  A

+ 6  A  B

---------

   A  0  9

---------

Verify commutativty of addition of rational numbers for each of the following pairs of rotional numbers:

Verify commutativty of addition of rational numbers for each of the following pairs of rotional numbers: 

Verify commutativty of addition of rational numbers for each of the following pairs of rotional numbers: 

Verify commutativty of addition of rational numbers for each of the following pairs of rotional numbers: 

Verify commutativty of addition of rational numbers for each of the following pairs of rotional numbers: