Numbers Worksheet-7

Numbers Worksheet-7

1. Integer used to represent a withdrawal of Rs. 200 is

(a) Depositing Rs.200                 (b) +Rs. 200

(c) –Rs. 200                                  (d) –200

2. Compare –25 □ –32

(a) <                    (b) =                   (c) ≠                    (d) >

3. Compare using (>, <, =, ≠) +15 □ –27

(a) <                    (b) =                   (c) >                    (d) ≠

4. Compare +42 □ +23

(a) <                    (b) >                   (c) =                    (d) ≠

5. On a vertical number line positive numbers are placed ______ 0.

(a) right side     (b) Left side      (c) Above           (d) Below

6. Opposite of profit of Rs. 250

(a) +Rs. 250                                  (b) Loss of Rs. 250

(c) +250                                         (d) None

7. Integer used to represent 30 km towards the west

(a) 30 km east                               (b) –30 km

(c) +30 km                                     (d) +30

8. (+12) + (+25) =

(a) +37               (b) +13               (c) +47               (d) –37

9. (–28) + (–32) =

(a) +60               (b) –60              (c) 0                    (d) 60

10. (–46) + (+15) =

(a) +31               (b) 31                  (c) –31                (d) none

11. (+48) + (–53) =

(a) +5                 (b) –5                 (c) 5                    (d) None

12. (+13) – (+12) =

(a) +1                  (b) –1                  (c) 0                    (d) 13

13. (+68) – (–23) =

(a) –91               (b) +91               (c) +23               (d) +19

14. (–62) – (+12) =

(a) +74               (b) –50               (c) –74               (d) –72

15. (–43) – (–12) =

(a) +55               (b) –21               (c) –31                (d) +31

16. Multiplying a negative integer for odd times gives a ______ result.

(a) positive        (b) negative       (c) 0                    (d) None

17. Multiplication of a negative integer for even times gives a ____ result.

(a) Negative      (b) 0                    (c) Positive        (d) none

18. (–12) × (–3) × (+4) × (–6) =

(a) –144             (b) –908            (c) +864            (d) –864

19. (–32) × (–4) × (–3) × 0 × (–6) =

(a) +27, 648     (b) +276, 480   (c) +276, 480   (d) –27, 648

20. (–6) × (–2) =

(a) –8                 (b) +8                 (c) –12                (d) +12

Answer Key:

(1)-(c); (2)-(d); (3)-(c); (4)-(b); (5)-(c); (6)-(b); (7)-(b); (8)-(a); (9)-(b); (10)-(c); (11)-(b); (12)-(a); (13)-(b); (14)-(c); (15)-(c); (16)-(b); (17)-(c); (18)-(d); (19)-(c); (20)-(d)