Worksheet Questions: Whole Numbers- 2 - Notes | Study Mathematics (Maths) Class 6 - Class 6

Steps to calculate predecessor 

Ques 1: Predecessor of: 
(a) 2340 is __________
(b) 25621 is __________
Ans: (a) 2339
(b) 25620

Steps to calculate successor

Ques 2: Successor of: 
(a) 21029 is __________
(b) 7810 is __________
Ans: (a) 21030
(b) 7811

Ques 3: Match the following:

Ans.
(i) ↔ (c)
(ii) ↔ (a)
(iii) ↔ (d)
(iv) ↔ (b)

Ques 4: A boy is moving from one tree to another find the position of the boy from number line?
(i) 

(ii) 

(iii)  

Ans: (i) Position of boy is 7 units (4 + 3 = 7)
(ii) Position of boy is 9 – 3 = 6 units
(iii) Position of boy is 4 × 3 = 12 units

Ques 5: Represent the following on a number line:
(i) 5 + 3
(ii) 10 – 6
(iii) 2 × 5
Ans. 
(i)
(ii)
(iii)

Ques 6: Simplify by using suitable re-arrangement:
(i) 417 + 225 + 583
(ii) 4 × 537 × 25
(iii) 8212 + 284 + 788 + 716
(iv) 125 × 4 + 125 × 8
Ans: (i) 1,225
(ii) 53,700
(iii) 10,000
(iv) 1,500

Ques 7: Find the value of following using suitable properties:
(i) 437 × 102
(ii) 925 × 99
(iii) 143 × 22 + 143 × 8
(iv) 12345 × 15 – 2469 × 25
(v) 92785 × 98 + 92785 × 2
Ans: (i) 44,574
(ii) 91,575
(iii) 4,290
(iv) 1,23,450
(v) 92,78,500

Ques 8: Write the smallest 3-digit number which will not change on reversing the digits.
Ans: 101

Ques 9: The difference of smallest 3-digit number and its predecessor is __________.
Ans: 1

Ques 10: Write 'True' or 'False' for the following statements:
(i) The product of two odd numbers is always odd.
(ii) The product of two even numbers is always even.
(iii) The sum of two odd numbers is always odd.
(iv) The difference of one even and an odd number is always even.
(v) The difference of two odd numbers is always even.
Ans: (i) True
(ii) True
(iii) False
(iv) False
(v) True