CBSE Class 8 Mathematics/Factorisation

CBSE Class 8 Mathematics/Factorisation – Chapter 14 is about the Model Questions that you can expect for Yearly Examination. Here you can find out practice problems for Class 8 Mathematics. This worksheet is designed for CBSE Class 8 students.

CBSE Class 8 Mathematics/Factorisation – Chapter 14
Extra Questions for Practice/Model Questions
Fill in the blanks:

1. ——— is a factor of every term.
2. The common factor of 2x and y are ———–
3. The factorisation of 5x – 25 is —————-
4. The factors of y(y +z) + 9(y +z) are ———–
5. The value of 2x -6 at x = 5 is —————
   Answer the following:
6. Factorise:
   a) 12x + 36
   b) 22y – 33z
7. Factorise 6xy – 4y + 6 – 9x
8. Factorise x (2+y) + (8 + 4y)
9. Factorise (xy +x) + y + 1
10. Find and correct the errors in the following statements:
    a) 2(x -6) = 2x – 6
    b) 3x + 2y = 5xy

ANSWERS:

1. 1
2. 1
3. 5(x – 5)
4. (y + z) (y + 9)
5. 4
6. a) 12x + 36 = 12(x + 3)
   b) 22y – 33z = 11(2y – 3z)
7. 6xy – 4y + 6 – 9x = 2y (3x – 2) – 3(3x – 2) = (3x – 2) (2y – 3)
8. x (2 + y) + (8 + 4y) = x (2 + y) + 4( 2 + y) = (2 + y) (x + 4)
9. (xy + x) + y + 1 = x(y + 1) + y + 1 = (y + 1) (x + 1)
10. a) 2 (x – 6) = 2x – 12
    b) 3x + 2y itself. We can’t add these two terms because the variables are different.