Haryana State Board HBSE 6th Class Maths Solutions Chapter 2 Whole Numbers Ex 2.1 Textbook Exercise Questions and Answers.
Haryana Board 6th Class Maths Solutions Chapter 2 Whole Numbers Exercise 2.1
Question 1.
Write the next three natural numbers after 10,999.
Solution:
After 10,999 next three natural numbers are :
10,999 + 1 = 11,000
11,000 + 1 = 11,001
and 11,001 + 1 = 11,002.
Question 2.
Write the three whole numbers occurring just before 10,001.
Solution:
Before 10,001 three whole numbers are :
10,001 – 1 = 10,000
10,000 – 1 = 9,999
and 9,999 – 1 = 9,998.
Question 3.
Which is the smallest whole number ?
Solution:
Zero is the smallest whole number.
Question 4.
How many whole numbers are there between 32 and 53 ?
Solution:
There are 20 whole numbers between 32 and 53.
Question 5.
Write the successor of:
(a) 24,40,701
(b) 1,00,199
(c) 10,99,999
(d) 23,45,670.
Solution:
(a) Successor of 24,40,701 is 24,40,701 + 1 = 24,40,702.
(b) Successor of 1,00,199 is 1,00,199 + 1 = 1,00,200.
(c) Successor of 10,99,999 is 10,99,999 + 1 = 11,00,000.
(d) Successor of 23,45,670 is 23,45,670 + 1 = 23,45,671.
Question 6.
Write the predecessor of:
(a) 94
(b) 10,000
(c) 2,08,090
(d) 76,54,321.
Solution:
(a) Predecessor of 94 is 94 – 1 = 93.
(b) Predecessor of 10,000 is 10,000 – 1 = 9,999.
(c) Predecessor of 2,08,090 is 2,08,090 – 1 = 2,08,089.
(d) Predecessor of 76,54,321 is 76,54,321 – 1 = 76,54,320.
Question 7.
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.
Solution: (a) 503 is on the left to 530.
∴ 503 < 530 or 530 > 503.
(b) 307 is on the left to 370.
∴ 307 < 370 or 370 > 307. ,
(c) 56789 is on the left to 98765.
∴ 56789 < 98765 or 98765 > 56789.
(d) 9830415 is on the left to 10023001.
∴ 9830415 < 10023001 or 10023001 > 9830415.
Question 8.
Which of the following state¬ments 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 number.
(h) One 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.
Solution:
(a) F,
(b) F,
(c) T,
(d) T,
(e) T,
(f) F,
(g) F,
(h) F,
(i) T,
(j) F,
(k) F,
(l) T,
(m) F.