CBSE Worksheet for Chapter - 1 Surds and Exponents Class 8

Worksheets For class 8

Find CBSE Worksheet for chapter-1 Surds and Exponents class 8

1. CLASS-8
2. BOARD: CBSE
3. Mathematic Worksheet - 1
4. TOPIC: Surds and Exponents
5. For other  CBSE Worksheet for class 8 Mathematic  check out main page of Physics Wallah.

    

SUMMARY:

Surds and Radicals:

Let ‘a’ be a rational number and ‘n’ be a positive integer such that is an irrational, then  is called a surd of the order n and a is called the radical.  is a surd if a is a rational number and is an irrational number.

Law of Radicals:

Exponents:

Law of exponents:

EXERCISE:

1. If 3^x = 500, then the value of 3^x-2 is:
   1. 100/9
   2. 1000/9
   3. 500/9
   4. 500/3
2. If  = then the value of  is:
   1. 1
   2. 0
   3. cannot be determined
   4. None of these
3. The value of  is:
   1. 64
   2. 32
   3. Cannot be determined
   4. None of these
4. Simplify: 
   1. 4/25
   2. 25/4
   3. 2/5
   4. 5/2
5. equals to:
   1. 4
   2. 1/4
   3. 1
   4. 16
6. If x + 1/x = 2, then is equal to:
   1. 1
   2. 3
   3. 2
   4. 
7. The value of  is
   1.   3/2 
   2. = 3/2 
   3. 2/3 
   4. - 1/2
8. The exponential form of  is:
   1.  
   2.  
   3.   
   4. 6
9. The value of 
   1. 10
   2. 1
   3. 6
   4. 8
10. Which of the following is equal to 1?
    1. A) 
11. If a^pa^q=a^x, then x=
    1. A) p+q
    2. B) p-q
    3. C) pq
    4. D) p/q 
12. The value of will be:
    1.  
    2. 2
    3. 0
    4. 3
13. If (4)³ x (6)⁴ x (10)⁵ = 2^x x 3^y x 5^z  then the value of x+y+z is:
    1. 12
    2. 15
    3. 20
    4. 24
14. If b = a + c, then=
    1. 0
    2. 1
    3. 2
    4. – 1
15. The value of ‘a’ in the following equation: 
    1. 1
    2. - 2
    3. - 1
    4. 2

        

Solutions: to worksheet-1 Topic- Surds and Exponents

1. (C)
2. (A)
3. (A)
4. (B)
5. (A)
6. (C)
7. (B)
8. (C)
9. (A)
10. (C)
11. (A)
12. (C)
13. (D)
14. (B)
15. (C)