NCERT Solutions for class 6 maths chapter 2 Exercise 2.1 is all about practicing of addition, subtraction, multiplication and dividing the numbers. there may be different ways to solve them with less amount of time. Class 6 maths chapter 2 exercise 2.1 solutions are provided here in simple ways. Class 6th maths 2.1 has total 8 questions to solve. so, students can check the solutions of whole number exercise 2.1 given below.
NCERT Solutions for Class 6 Maths, chapter 2, Whole Numbers, Exercise 2.1
Q.1. Write the next three natural numbers after 10999.
Ans: The next three natural numbers after 10999 are
10,999 +1 = 11,000
11,000 +1 = 11,001
11,001 +1 = 11,002
Hence, the next three natural number after 10,999 are 11,000, 11,001 and 11,002.
Q.2. Write the three whole numbers occurring just before 10001.
Ans: The three whole numbers occurring just before 10001 are
10,001 -1 = 10,000
10,000 -1 = 9,999
9,999 – 1 = 9,998
Hence, the three whole numbers occurring just before 10001 are 10,000, 9,999 and 9,998.
Q.3. Which is the smallest whole number?
Ans: The smallest whole number is 0 (Zero).
Q.4. How many whole numbers are there between 32 and 53?
Ans: The whole numbers between 32 and 53 = 53 – 32 – 1 = 20
(33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
Hence, there are 20 whole numbers between 32 and 53
Q.5. Write the successor of : (a) 2440701 (b) 100199 (c) 1099999 (d) 2345670
Ans: The successors of:
(a) 2440701 + 1 = 2440702
(b) 100199 + 1 = 100200
(c) 1099999 + 1 = 1100000
(d) 2345670 + 1 = 2345671
Q.6. Write the predecessor of : (a) 94 (b) 10000 (c) 208090 (d) 7654321
Ans: The predecessors of:
(a) 94 – 1 = 93
(b) 10000 – 1 = 9999
(c) 208090 – 1 = 208089
(d) 7654321 – 1 = 7654320
Q.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
Ans: (a) Since, 530 > 503
Hence, 503 appear on the left side of 530 on the number line.
(b) Since, 370 > 307
Hence, 307 appear on the left side of 370 on the number line.
(c) Since, 98765 > 56789
Hence, 56789 appear on the left side of 98765 on the number line.
(d) Since, 9830415 < 10023001
Hence, 9830415 appear on the left side of 10023001 on the number line.
Q.8. Which of the following statements 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) 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.
Ans:
