Numbers Worksheet-16

 Numbers Worksheet-16 

1. The operation 'of stands for ___

(a) +                    (b) –                    (c) +                    (d) ×

2. 10⁸ is expanded by writing ____ number of zeros after 1.

(a) 8                    (b) 0                    (c) 10                  (d) none

3. Sign of the product of 231 negative integer and 9 positive integer is

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

4. The +ve integer whose product with –1 is

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

5. Subtract –28 from –12

(a) –16               (b) +16               (c) +40               (d) –40

6. Subtract +43 from –26

(a) –17                (b) +17               (c) –69               (d) +69

7. Subtract –26 from +32

(a) –6                 (b) +6                 (c) –58               (d) +58

8. Difference of sums of 998 and –486 from 290 and 732

(a) –510             (b) +510             (c) –1022           (d) +512

9. ____+ (–48) = 0

(a) –48               (b) 0                   (c) 1                     (d) +48

10. –112 ×____ = +112

(a) + 1                 (b) 0                    (c) –1                  (d) +112

11. 68 ×_____= –68

(a) 0                    (b) 1                    (c) –1                  (d) none

12. 156 × _____= 0

(a) 1                     (b) 0                    (c) 156                (d) –1

13. Sum of two integers is +62. If one of the integer is –48 then the other is

(a) +14               (b) –14               (c) –110              (d) +110

14. Product of two integers is –48. If one of the integers is –6 then the other is

(a) + 1                 (b) +288            (c) 0                    (d) +8

15. One integer is greater than the other by +4. If one number is –16 then the other is

(a) +12               (b) 0                    (c) –1                  (d) –12

16. Reciprocal of is

(a)                (b) 0                    (c) 1                     (d) 8

17. Reciprocal of is

(a)                 (b)                 (c)                    (d) 36

18. Reciprocal of 3 is

(a) –3                 (b)                 (c)                    (d) None

19. Reciprocal of is

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

20. A man walked 3 km towards North then 8 km towards South. His posi­tion at the end of the walk is

(a) 5 km towards East                 (b) 3 km towards South

(c) 8 km towards North              (d) 5 km towards South

 Answer Key: 

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