Decimal Fractions Worksheet-7

Decimal Fractions Worksheet-7

1. The value of (68.237)² – (31.763)² is :

(a) 3.6474         (b) 36.474         (c) 364.74          (d) 3647.4

2. Evaluate :

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

3. On simplification of , we get :

(a) 1                    (b) 4                   (c) 5                    (d) 6

(a) 3.308           (b) 4                    (c) 33.08           (d) 330.8

5. The value of is :

(a) 1                    (b) 10                  (c) 100                (d) None of these

6. is equal to :

(a) 0.20              (b) 2.00             (c) 20                  (d) 22

(a) 0.5                (b) 1                    (c) 1.9                 (d) 4.2

8. Simplify :

(a) 7.2                (b) 8.5                (c) 10                  (d) 12

9. is equal to :

(a) 0.1                (b) 0.11               (c) 1.1                  (d) 11

10. (7.5 × 7.5 + 37.5 + 2.5 × 2.5) is equal to :

(a) 30                 (b) 60                 (c) 80                  (d) 100

11. The simplification of gives :

(a) 0.009           (b) 0.09             (c) 0.9                (d) 9

12. The expression (11.98 × 11.98 + 11.98 × x + 0.02 × 0.02) will be a perfect square for × equal to :

(a) 0.02              (b) 0.2                (c) 0.04              (d) 0.4

13. The value of is :

(a) 0.5                (b) 2                    (c) 2.199            (d) 3.195

14. The value of

(a) 0.039           (b) 0.235           (c) 0.25              (d) 4

15. The value of is :

(a) 0.00092      (b) 0.0092        (c) 0.092           (d) 0.92

Answer Key:

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