RS Aggarwal Class 6 Math Third Chapter Whole Numbers Exercise 3A Solution
EXERCISE 3A
(1) Write the Next three whole numbers after 30999.
Ans: 31000, 31001, 31002.
(2) Write the three whole numbers occurring just before 1001.
Ans: 10000, 9999, 9998.
(3) How many whole numbers are there between 1032 and 1209?
Ans: 176.
(4) Which is the smallest whole number?
Ans: 0.
(5) Write the successor of :
(i) 2540801
The successor of 2540501= (2540801 + 1)= 254802.
(ii) 9999
The successor of 9999= (9999 + 1)= 10000.
(iii) 50904
The successor of 50904= (50904 + 1)= 50905.
(iv) 61639
The successor of 61639= (61639 + 1)= 61640.
(v) 687890
The successor of 687890= (687890 + 1)= 687891.
(vi) 5386700
The successor of 5386700= ( 5386700 + 1)= 5386701.
(vii) 6475999
The successor of 6475999= (6475999 + 1)= 6476000.
(viii) 9999999
The successor of 9999999= (999999 + 1)= 10000000.
(6) Write the predecessor of:
(i) 97
The predecessor is (97 – 1)= 96.
(ii) 10000
The predecessor is (10000 – 1)= 9999.
(iii) 36900
The predecessor is (36900 – 1)= 36899.
(iv) 7684320
The predecessor is (7684320 – 1)= 7684319.
(v) 1566391
The predecessor is (1566391 – 1)= 1566390.
(vi) 2456800
The predecessor is (2456800 -1)= 2456799.
(vii) 100000
The predecessor is (100000 – 1)= 99999.
(viii) 1000000
The predecessor is (1000000 – 1)= 999999.
(7) Write down three consecutive whole numbers just preceding 7510001.
Ans: 7510000, 7509999, 7509998.
(8) Write (T) for true and (F) for false against each the following statements:
(i) Zero is the smallest natural number.
Ans: F
Statement: 1 is smallest natural number.
(ii) Zero is the smallest whole number.
Ans: T
(iii) Every whole number is a natural number.
Ans: F
Statement: Natural numbers together with ‘0’ are called whole number.
(iv) Every natural number is a whole number.
Ans: T
(v) 1 is the smallest whole number.
Ans: F
Statement: 0 is the smallest whole number.
(vi) The natural number 1 has no predecessor.
Ans: T
(vii) The whole number 1 has no predecessor.
Ans: F
Statement: The predecessor of 1 is 0.
(viii) The whole number 0 has no predecessor.
Ans: T
(ix) The predecessor of a two-digit number is never a single-digit number.
Ans: F
Statement: The predecessor of 10 is 9. Which is single-digit number.
(x) The successor of a two-digit number is always a two-digit number.
Ans: F
Statement: The successor of two-digit number will be a also three digit-number. If it is 99.
(xi) 500 is the predecessor of 499.
Ans: F
Statement: 500 is the successor of 501.
(xii) 7000 is the successor of 6999.
Ans: T.
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