The document RS Aggarwal Solutions: Whole Numbers Exercise - 3A Notes | EduRev is a part of the Class 6 Course Mathematics (Maths) Class 6.

All you need of Class 6 at this link: Class 6

**Q.1. Write the next three whole numbers after 30999.****Ans. **After 30999, three whole numbers will be

30999 + 1 = 31000

31000 + 1 = 31001

31001 + 1 = 31002

i.e., 31000, 31001 and 31002**Q.2. Write the three whole numbers occurring just before 10001.****Ans.** Before 10001, three whole numbers will

be 10001 – 1 = 10000

10000 – 1 = 9999

9999 – 1 = 9998

i.e., 10000, 9999, 9998**Q.3. How many whole numbers are there between 1032 and 1209 ?****Ans. **Between 1032 and 1209, whole number

are 1209 – 1031 = 178**Q.4. Which is the smallest whole number ?****Ans. **The smallest whole number is 0**Q.5. Write the successor of :****(i) 2540801****(ii) 9999****(iii) 50904****(iv) 61639****(v) 687890****(vi) 5386700****(vii) 6475999****(viii) 9999999****Ans. **The successor of**(i) **2540801 is 2540801 + 1 = 2540802**(ii)** 9999 is 9999 + 1 = 10000**(iii)** 50904 is 50904 + 1 = 50905**(iv) **61639 is 61639 + 1 = 61640**(v)** 687890 is 687890 + 1 = 687891**(vi)** 5386700 is 5386700 + 1 = 5386701**(vii)** 6475999 is 6475999 + 1 = 6476000**(viii)** 9999999 is 9999999 + 1 = 10000000**Q.6. Write the predecessor of :****(i) 97****(ii) 10000****(iii) 36900****(iv) 7684320****(v) 1566391****(vi) 2456800****(vii) 100000****(viii) 1000000****Ans.**

Predecessor of**(i)** 97 is 97 – 1 = 96**(ii)** 10000 is 10000 – 1 = 9999**(iii) **36900 is 36900 – 1 = 36899**(iv)** 7684320 is 7684320 – 1 = 7684319**(v)** 1566391 is 1566391 – 1 = 1566390**(vi) **2456800 is 2456800 – 1 = 2456799**(vii)** 100000 is 100000 – 1 = 99999**(viii)** 1000000 is 1000000 – 1 = 999999**Q.7. Write down the three consecutive whole numbers just preceding 7510001.****Ans. **Three consecutive whole numbers just

preceding 7510001 are

(7510001 – 1), (7510001 – 2),

(7510001 – 3)

i.e. 7510000, 7509999, 7509998.**Q.8. Write (T) for true and (F) for false against each of the following statements :****(i) Zero is the smallest natural number.****(ii) Zero is the smallest whole number.****(iii) Every whole number is a natural number.****(iv) Every natural number is a whole number.****(v) 1 is the smallest whole number.****(vi) The natural number 1 has no predecessor.****(vii) The whole number 1 has no predecessor.****(viii) The whole number 0 has no predecessor.****(ix) The predecessor of a two-digit number is never a single-digit number.****(x) The successor of a two-digit number is always a two-digit number.****(xi) 500 is the predecessor of 499.****(xii) 7000 is the successor of 6999.**

**Ans.****(i)** Zero is not a natural number. (F)**(ii)** Zero is the smallest whole number (T)**(iii) **No, it is false, as zero is not a natural number but it is a whole number.**(iv)** Yes, it is true, as set of natural numbers is a subset of whole numbers.**(v)** False, zero is the smallest whole number.**(vi)** The natural number 1 has no predecessor as 0 is the predecessor of 1 (T) Which is not a natural number**(vii)** The whole number 1 has no predecessor (F)

∵ Predecessor of 1 is 0 which is a whole number**(viii)** The whole number 0 has no predecessor (T)**(ix) **The predecessor of a two-digit number is never a single-digit number (F) As predecessor of two digit number say 99 is 99 – 1 = 98

Which is also a two-digit number and of 10 is 10 – 1 = 9 which is single-digit number**(x) **The successor of a two-digit number is always a two-digit number (F)

∵ The successor of a two-digit number 99 is 99 + 1 = 100 which is a three digit

number**(xi)** 500 is the predecessor of 499 (F) As predecessor of 499 is 499 – 1 = 498

not 500 as 500 is the successor of 499**(xii)** 7000 is the successor of 6999 (T)

Offer running on EduRev: __Apply code STAYHOME200__ to get INR 200 off on our premium plan EduRev Infinity!

191 videos|224 docs|43 tests