Numbers Worksheet-25

Numbers Worksheet-25

1. 238 ÷ 238 is ..............

(a) 0                    (b) 238               (c) 28                  (d) 1

2. 64 ÷ 1 is ...........

(a) 1                     (b) 0                   (c) 46                  (d) 64

3. 1 ÷ 28 is ..............

(a) 28                  (b) 1                    (c) 0                    (d)

4. (98 + 14) × 0 is ...........

(a) 112                (b) 1                    (c) 0                    (d) 0 + 98 + 14

5. Difference between the place values of 3 and 7 in 6,380,942 and 5,107,289 is ..........

(a) 29,300         (b) 273,000      (c) 27,300         (d) 293,000

6. Difference between the face values of 5 and 9 in 165,234 & 842,928 is

(a) 4100             (b) 5900            (c) 4                    (d) 14

7. Expanded form of 920,831

(a) 90000 + 20000 + 800 + 1

(b) 9200 + 800 + 31

(c) 90000 + 20000 + 800 + 30 +1

(d) 900000 + 20000 + 800 + 30 + 1

8. Predecessor of natural number 1

(a) 0                    (b) 2                    (c) 10                  (d) does not exist

9. Three consecutive predecessors of 70010 are

(a) 70009, 70008, 7007            (b) 70009, 70008, 70010

(c) 70009, 70008, 70007          (d) 70009

10. In whole numbers closure property is not satisfied w.r.t. operations

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

11. Which of the following statement is true?

(a) Every whole number is a natural number

(b) Every natural number is a whole number

(c) ‘1’ is the least whole number

(d) None of these

12. Additive identity element of 24 is

(a) –24               (b) 1                    (c) 0                    (d) None

13. The property represented by a + b = b + a is

(a) associative property              (b) commutative property

(c) closure property                     (d) additive identity

14. Which of the following property is not applicable to addition of whole numbers?

(a) Closure property                    (b) Commutative property

(c) Associative property              (d) None of these

15. Which of the following properties are not applicable to the subtraction of whole numbers?

(a) Closure property                    (b) Commutative property

(c) Associative property              (d) All of these

16. If a & b are two whole numbers, then commutative law is applicable to subtraction if and only if

(a) a = b             (b) a ¹ b             (c) a > b             (d) a < b

17. The difference between the largest 5–digit number and smallest 5–digit number is

(a) 90,000        (b) 89,999          (c) 109,999       (d) none

18. Multiplicative identity number is ;

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

19. The property represented by a × (b + c) = a × b + a × c is

(a) commutative property          (b) associative property

(c) distributive property             (d) none of these

20. The product of two odd numbers is

(a) an even number                     (b) an odd number

(c) cannot be determined           (d) none of these

Answer Key:

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