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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Sum of any two whole numbers is always a whole number. This property is called …………….. A) Commutative B) Associative C) Closure D) None |
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Answer» Correct option is C) Closure |
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| 2. |
How many whole numbers are there between 32 and 53? |
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Answer» whole numbers between 32 and 53 = 20 (i,e 53 – 32 – 1 = 20) such as : 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52. |
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| 3. |
Subtraction of whole numbers is ……………… A) ClosedB) Not Closed C) Can’t say D) None |
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Answer» B) Not Closed |
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| 4. |
6 – 9 9 – 6 A) = B) ≠ C) 0D) None |
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Answer» Correct option is B) ≠ |
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| 5. |
7+3 3+7A) = B) ≠ C) > D) < |
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Answer» Correct option is A) = |
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| 6. |
If 5 and 3 are whole numbers, then their sum is ………………A) Whole number B) Natural number C) Negative number D) None |
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Answer» A) Whole number |
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| 7. |
Whole numbers are represented by A) N B) V C) W D) O |
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Answer» Correct option is C) W |
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| 8. |
(5 + 4) + 3 = 5 + (4 + 3), this property is called ……………… A) Closure B) CommutativeC) Associative D) Additive |
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Answer» C) Associative |
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| 9. |
5 × 4 = 4 × 5 this property is called A) Closure B) AssociativeC) Commutative D) B and C |
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Answer» C) Commutative |
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| 10. |
Are all natural numbers are whole numbers? A) Yes B) No C) We can’t say D) None |
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Answer» Correct option is A) Yes |
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| 11. |
Write the successor ofa. 2440701b. 100199c. 1099999d. 2345670 |
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Answer» a. 2440701 = 2440702 is the next number to 2440701. b. 100199 = 100200 is the next number to 100199 c. 1099999 = 1100000 is the next number to 1099999 d. 2345670 = 2345671 is the next number to 2345670 |
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| 12. |
a × (b – c) = (a × b) – (a × c), this property is ……………… A) Distributive of multiplication over addition. B) Distributive of multiplication over subtraction.C) Associative over addition. D) Associative over subtraction. |
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Answer» B) Distributive of multiplication over subtraction. |
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| 13. |
Successor of the smallest whole number is ……………….. A) 0B) 1 C) 10 D) 9 |
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Answer» Correct option is B) 1 |
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| 14. |
Mark right or wrong in front of the following statements : (i) All natural numbers are whole numbers. (ii) 1 is the smallest whole numbers. (iii) The sum of two whole numbers is always a whole numbers. (iv) 245 + 450 = 450 + 245. (v) 1124 + 0 = 0. (vi) The operation of subtraction is reciprocal to the operation of addition. (vii) 4 – 4 = 0 (is a whole numbers). (viii) 7 – 7 ≠ 0. (ix) The product of any two whole numbers is a whole numbers. (x) When we multiply a whole number by 0 the product is the number itself. (xi) When we multiply a whole number by 1 the product is the number itself. |
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Answer» (i) T (ii) F (iii) T (iv) T (v) F (vi) F (vii) T (viii) F (ix) T (x) F (xi) T |
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| 15. |
Which is the smallest whole number? |
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Answer» 0 is the smallest whole numbers |
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| 16. |
Smallest natural number is (i) 0 (ii) 1 (iii) 2 (iv) 3 |
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Answer» (ii) Smallest natural number is 2 |
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| 17. |
Successor of 812 is (i) 811 (ii) 800 (iii) 813 (iv) 900 |
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Answer» (iii) Successor of 812 is 813 |
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| 18. |
Smallest whole number is (i) 0 (ii) 1 (iii) 2 (iv) 3 |
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Answer» (i) Smallest whole number is 0 |
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| 19. |
Number on the left of 9, number line will be (i) 10 (ii) 9 (iii) 7 (iv) 8 |
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Answer» (iv) Number on the left of 9, number line will be 8 |
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| 20. |
On the number what number line on the right of 13 number will be (i) 12 (ii) 13 (iii) 14 (iv) 15 |
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Answer» (iii) The number will be 14 |
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| 21. |
Write the successors and predecessors of the following numbers. (i) 189 (ii) 199 (iii) 209 (iv) 300 |
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Answer» Successor and predecessor numbers of the given numbers are as follows :
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| 22. |
Are all natural numbers whole numbers? |
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Answer» Yes. All the natural numbers are whole numbers. |
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| 23. |
Which of the statements are True (T) and which are False (F)?1. All whole numbers are natural numbers.2. We can show the greatest whole number on the number line. |
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Answer» 1. False 2. False |
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| 24. |
{Whole numbers} – {Natural numbers} = ……………… A) Whole number B) Natural number C) A and B D) None |
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Answer» A) Whole number |
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| 25. |
Which of the statements are True (T) and which are False (F)?1. A whole number that lies on the number line lies to the right side of another number is the greater number.2. We can’t show the smallest whole number on the number line. |
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Answer» 1. True 2. False |
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| 26. |
Which of the statements are True (T) and which are False (F)?1. Additive identity is 1.2. A whole number on the left of another number on the number line is greater. |
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Answer» 1. False 2. False |
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| 27. |
Are all whole numbers natural numbers? |
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Answer» No. All the whole numbers are not natural numbers. |
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| 28. |
Find the product by suitable rearrangement:a. 2 × 1768 × 50 = (2 × 50) × 1768b. 4 × 166 × 25 = (4 × 25) × 166c. 8 × 291 × 125 = (8 × 125) × 291d. 625 × 279 × 16 = (625 × 16) × 279e. 285 × 5 × 60 = 285 × 5 × 60f. 125 × 40 × 8 × 25 = 125 × 8 × 40 × 25 |
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Answer» a. 2 × 1768 × 50 = (2 × 50) × 1768 = 100 × 1768 = 176800 b. 4 × 166 × 25 = (4 × 25) × 166 = 100 × 166 = 16600 c. 8 × 291 × 125 = (8 × 125) × 291 = 1000 × 291 = 291000 d. 625 × 279 × 16 = (625 × 16) × 279 = 10000 × 279 = 2790000 e. 285 × 5 × 60 = 285 × 5 × 60 = 285 × (5 × 60) = 285 × 300 = 85,500 f. 125 × 40 × 8 × 25 = 125 × 8 × 40 × 25 = (125 × 40) × (8 × 25) (5000) × (200) = 1000 × 1000 = 10,00,000. |
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| 29. |
In each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. Also write them with the appropriate sign (>, <) between them. a. 530, 503 b. 370, 307 c. 98765, 56789 d. 9830415, 10023001 |
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Answer» a. 530 > 503 503 is on the left side of 530 on the number line. b. 370 >307 307 is on the left side of 370 on the number line c. 98765 > 56789 56789 is on the left side of 98765 on the number line d. 9830415 < 10023001 98,30,415 is on the left side of 10023.001 on the number line |
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| 30. |
Which of the following statement are true (T) and which are false(F)?a. Zero is the smallest natural number b. 400 is the predecessor of 399 c. Zero is the smallest whole number d. 600 is the successor of 599 e. All natural numbers are whole numbers f. All whole numbers are natural numbers g. The predecessor of a two digit number is never a single digit numberh. 1 is the smallest whole number i. The natural number 1 has no predecessor j. The Whole number 1 has no predecessor k. The whole number 13 lies between 11 and 12 l. The whole number 0 has no predecessor m. The successor of a two digit number is always a two digit number. |
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Answer» a. Zero is the smallest natural number False b. 400 is the predecessor of 399 False c. Zero is the smallest whole number True d. 600 is the successor of 599 True e. All natural numbers are whole numbers True f. All whole numbers are natural numbers False g. The predecessor of a two digit number is never a single digit number False h. 1 is the smallest whole number False i. The natural number 1 has no predecessor True j. The Whole number 1 has no predecessor False k. The whole number 13 lies between 11 and 12 False l. The whole number 0 has no predecessor True m. The successor of a two digit number is always a two digit number. False |
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| 31. |
Predecessor of 500 is (i) 400 (ii) 499 (iii) 501 (iv) 600 |
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Answer» (ii) Predecessor of 500 is 499 |
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| 32. |
Use the commutative and associative properties to simplify the following:431 + 37 + 69 + 63 |
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Answer» 431 + 37 + 69 + 63 = 431 + (37 + 69) + 63 = 431 + (69 + 37) + 63 (Commutative property) = (431 + 69) + (37 + 63) (Associative property) =(431 + 69) + 100 = 500+ 100 = 600 |
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| 33. |
What would 6 ÷ 0 and 9 ÷ 0 be equal to? |
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Answer» 6 ÷ 0 6 is divided by 0 means, we subtract 0 from 6 repeatedly i.e., we subtract 0 from 6 again and agian from 6. 6 – 0 = 6 once 6 – 0 = 6 twice 6 – 0 = 6 thrice and ………………. If we subtract zero from 6 successively we can’t get zero at any end. So, 6 ÷ 0 is not a number that we can reach. So, division of a whole number by 0 does not give a known number as answer, so it is not defined. Similarly 9 ÷ 0 is not defined. So, we can’t say whether they are equal or not. |
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| 34. |
Verify the following:(5 × 6) × 2 = 5 × (6 × 2) |
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Answer» L.H.S : (5 × 6) × 2 = 30 × 2 = 60 R.H.S : 5 × (6 × 2) = 5 × 12 = 60 ∴ L.H.S = R.H.S So (5 × 6) × 2 = 5 × (6 × 2) ∴ Multiplication of whole numbers is associative. |
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| 35. |
Find the product by suitable rearrangement. i) 25 × 1963 × 4 ii) 20 × 255 × 50 × 6 |
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Answer» i) 25 × 1963 × 4 = 25 × (1963 × 4) = 25 × (4 × 1963) (Commutative property) = (25 × 4) × 1963 (Associative property) = 100 × 1963 = 196300 ii) 20 × 255 × 50 × 6 = 20 × 50 × 255 × 6 (Commutative property) = (20 × 50) × (255 × 6) (Associative property) = 1000 × 1530 = 15,30,000 |
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| 36. |
Find the product using suitable properties.i) 205 × 1989 ii) 1991 × 1005 |
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Answer» i) 205 × 1989 = (200 + 5) × 1989 (Distributive property of multiplication over addition) = (200 × 1989) + (5 × 1989) = 397800 + 9945 = 407745 ii) 1991 × 1005 = 1991 × (1000 + 5) Distributive property of multiplication over addition. = (1991 × 1000)+ (1991 × 5) = 1991000 + 9955 = 2000955 |
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| 37. |
Verify the following:(3 × 7) × 5 = 3 × ( 7 × 5 ) |
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Answer» L.H.S : (3 × 7) × 5 = 21 × 5 = 105 R.H.S : 3 × (7 × 5) = 3 × 35 = 105 ∴ (3 × 7) × 5 = 3 × (7 × 5) ∴ Multiplication of whole numbers is associative. |
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| 38. |
Use the commutative and associative properties to simplify the following:2 × (71 × 5) |
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Answer» 2 × (71 × 5) = 2 × (5 × 71) (Commutative property) = (2 × 5) × 71 (Associative property) = 10 × 71 = 710 |
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| 39. |
Use the commutative and associative properties to simplify the following:319 + 69 + 81 |
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Answer» 319 + 69 + 81 = 319 +(81 + 69) (Commutative property) = (319 + 81) + 69 (Associative property) = 400 + 69 = 469 |
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| 40. |
How many whole numbers are there in between 27 and 46? |
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Answer» Number of whole numbers upto 27 is 28 (from zero to 27) Number of whole numbers upto 45 is 46 (excluding 46) Number of whole numbers between 27 and 46 = 46 – 28 = 18 They are 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45. |
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| 41. |
Study the pattern.1 × 8 + 1 = 9 12 × 8 + 2 – 98 123 × 8 + 3 = 987 1234 × 8 + 4 = 9876 12345 × 8 + 5 = 98765Write the next four steps. Can you find out how the pattern works? |
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Answer» 12 × 8 + 2 = 98 123 × 8 + 3 = 987 1234 × 8 + 4 = 9876 12345 × 8 + 5 = 98765 123456 × 8 + 6 = 987654 1234567 × 8 + 7 = 9876543 12345678 × 8 + 8 = 98765432 123456789 × 8 + 9 = 987654321 The digits on the L.H.S. are in increasing order and the digits on the result (right side) are in decreasing order. |
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| 42. |
Study the pattern :1 × 8 + 1 = 912 × 8 + 2 = 98123 × 8 + 3 = 9871234 × 8 + 4 = 987612345 × 8 + 5 = 98765Write the next two steps, can you say how the pattern works?(Hint: 12345 = 11111 + 1111 +111 +11 +1). |
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Answer» 123456 × 8 + 6 = 987648 + 6 = 987654 1234567 × 8 + 7 = 9876536 + 7 = 9876543 Yes, the pattern works. As 123456= 111111 + 11111 + 1111 + 111 + 11 + 1. 123456 × 8 = ( 111111 + 11111 + 1111 + 111 + 11 + 1) × 8 = 111111 × 8 + 11111 × 8 + 1111 × 8 + 111 × 8 + 11 × 8 + 1 × 8 = 888888 + 88888 + 8888 +888 + 88 + 8 = 987648 = 123456 × 8 + 6 = 987648 + 6 = 987654 |
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| 43. |
Find the value of the following:79 × 4319 + 4319 × 11 |
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Answer» 79 × 4319 + 4319 × 11 = 79 × 4319 + 11 × 4319 Distributive property of multiplication over addition. = (79 + 11) × 4319 = 90 × 4319; = 388710 |
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| 44. |
Study the pattern: 91 × 11 × 1 = 1001 91 × 11 × 2 = 2002 91 × 11 × 3 = 3003 Write next seven steps. Check, whether the result is correct. |
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Answer» 91 × 11 × 1 = 1001 91 × 11 × 7 = 7007 91 × 11 × 8 = 8008 91 × 11 × 9 = 9009 91 × 11 × 10 = 10010 |
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| 45. |
Chandana and Venu purchased 12 note books and 10 note books respectively. The cost of each note book is Rs. 15. Then how much amount should they pay to the shopkeeper? |
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Answer» Number of note books purchased by Chandana = 12 Number of note books purchased by Venu = 10 Total number of note books purchased together = 12 + 10 Cost of each note book = Rs. 15 Cost of (12 + 10) note books = (12 + 10) × 15 = 22 × 15 The amount paid to the shopkeeper = Rs. 330 |
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| 46. |
65 × 99999 = ………………. A) 64935 B) 644935 C) 649335 D) 6499935 |
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Answer» Correct option is D) 6499935 |
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| 47. |
Find using distributive property :i) 2 × (5 + 6) ii) 5 × (7 + 8) |
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Answer» i) 2 × (5 + 6) Given, 2 × (5 + 6) = (2 × 5) + (2 × 6) By using distributive property of multiplication over addition. 2 × 11 = 10 + 12 22 = 22 L.H.S. = R.H.S ii) 5 × (7 + 8) Given, 5 × (7 + 8) = (5 × 7) + (5 × 8) By using distributive property of multiplication over addition. 5 × 15 = 35 + 40 75 = 75 L.H.S = R.HS |
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| 48. |
Fill in the blanks.1. a – b b – a2. Example for a rectangle number ……………… 3. Predecessor of smallest whole number is ……………..4. 1111 × 1111 = …………….. |
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Answer» 1. ≠ 2. 2 × 3 (or) 3 × 2 (or) 2 × 4 (or) 4 × 3, etc 3. 0 4. 1234321 |
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| 49. |
Fill in the blanks.1. The value of a number from 0 to its right ……………….2. 8 + 9 = 9 + 8 is called ……………….3. (5 × 6) × 2 = 5 × (6 × 2) is called ………………..4. (a × b) + (a × c) = ……………….5. Multiplicative identity is ……………… |
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Answer» 1. Increases 2. Addition is commutative 3. Associative over Multiplication 4. a × (b + c) 5. 1 |
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| 50. |
Find the product using suitable properties.a. 738 × 103b. 854 × 102c. 258 × 1008d. 1005 × 168 |
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Answer» a. 738 × 103 |
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