Square Roots and Cube Roots Worksheet-1

Square Roots and Cube Roots Worksheet-1

(a) 202               (b) 232               (c) 242               (d) 332

2. The square root of 64009 is :

(a) 253               (b) 347               (c) 363               (d) 803

3. The value of is :

(a) 4                    (b) 6                    (c) 8                    (d) 10

4. Evaluate :

(a) 3                    (b) 5                    (c) 6                    (d) 6.4

5. is equal to :

(a) 14                  (b) 15                  (c) 18                  (d) 24

6. is equal to :

(a) 5                    (b) 6                    (c) 8                    (d) 11

(a)                  (b)                 (c)                  (d) None of these

8. The square root of (272² – 128²) is :

(a) 144                (b) 200              (c) 240               (d) 256

9. If x*y = x + y + , the value of 6*24  is :

(a) 41                  (b) 42                 (c) 43                  (d) 44

10. If y = 5, then what is the value of

(a)            (b) 100               (c)            (d) 500

(a) 10.25            (b) 10.5              (c) 11.5                (d) 19.5

(a)                    (b)                   (c)                  (d)

13. The digit in the unit's place in the square  root of 15876 is :

(a) 2                    (b) 4                    (c) 6                    (d) 8

14. How many two–digit numbers satisfy this property : The last digit (unit's digit) of the square of the two–digit number is 8 ?

(a) 1                     (b) 2                    (c) 3                    (d) None of these

15. What is the square root of 0.16 ?

(a) 0.004           (b) 0.04             (c) 0.4                (d) 4

Answer Key:

(1)-b; (2)-a; (3)-a; (4)-c; (5)-b; (6)-a; (7)-c; (8)-c; (9)-b; (10)-d; (11)-b; (12)-b; (13)-c; (14)-d; (15)-c