## RS Aggarwal Class 6 Solutions Chapter 1 Number System Ex 1A

These Solutions are part of RS Aggarwal Solutions Class 6. Here we have given RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1A

Other Exercises

Question 1.
Solution:
(i) Nine thousand eighteen = 9,018.
(ii) Fifty four thousand seventy three = 54,073
(iii) Three lakh two thousand five hundred six = 3,02,506.
(iv) Twenty lakh ten thousand eight = 20,10,008.
(v) Six crore five lakh fifty-seven = 6,05,00,057.
(vi) Two crore two lakh two thousand two hundred two = 2,02,02,202.
(vii) Twelve crore twelve lakh twelve thousand twelve = 12,12,12,012.
(viii) Fifteen crore fifty lakh twenty thousand sixty-eight = 15,50,20,068.

Question 2.
Solution:
(i) 63,005 = Sixty three thousand five.
(ii)7,07,075 = Seven lakh, seven thousand seventy five.
(iii) 34,20,019 = Thirty-four lakh twenty thousand nineteen.
(iv) 3,05,09,0.12 = Three crore, five lakh, nine thousand twelve.
(v) 5,10,03,604 = Five crore ten lakh three thousand six hundred four.
(vi) 6,18,05,008 = Six crore eighteen lakh five thousand eight.
(vii) 19,09,09,900 = Nineteen crore nine lakh, nine thousand nine hundred.
(viii) 6,15.30,807 = Six crore fifteen lakh, thirty thousand eight hundred seven.
(ix) 6,60,60,060 = Six crore sixty lakh sixty thousand sixty. Ans.

Question 3.
Solution:
(i) 15,768 = (1 x 10000) + (5 x 1000) + (7 x 100) + (6 x 10) + (8 x 1)
(ii) 3,08,927 = (3 x 100000) + (8 x 1000) + (9 x 100) +(2 x 10) +(7 x 1)
(iii) 24,05,609 = (2 x 1000000) + (4 x 100000) + (5 x 1000) + (6 x 100) + (9 x 1)
(iv) 5,36,18,493 = (5 x 10000000) + (3 x 1000000) + (6 x 100000) + (1 x 10000) + (8 x 1000) + (4 x 100) + (9 x 10) + (3 x 1)
(v) 6,06,06,006 = (6 x 10000000) + (6 x 100000) + (6 x 1000) + (6 x 1)
(vi) 9,10,10,510 = (9 x 10000000) + (1 x 1000000) + (1 x 10000) + (5 x 100) + (1 x 10) Ans,

Question 4.
Solution:
(i) 6 x 10000 + 2 x 1000 + 5 x 100 + 8 x 10 + 4 x 1
= 60000 + 2000 + 500 + 80 + 4
= 62,584.
(ii) 5 x 100000 + 8 x 10000 + 1 x 1000 + 6 x 100 + 2 x 10 + 3 x 1
= 500000 + 80000 + 1000 + 600 + 20 + 3
= 5,81,623
(iii) 2 x 10000000 + 5 x 100000 + 7 x 1000 + 9 x 100 + 5 x 1
= 20000000 + 500000 + 7000 + 900 + 5
= 2,05,07,905
(iv) 3 x 1000000 + 4 x 100000 + 6 x 1000 + 5 x 100 + 7 x 1
= 3000000 + 400000 + 6000 + 500 + 7
= 34,06,507 Ans.

Question 5.
Solution:
In 79520986
Value of first 9 = 9000000
and value of second 9 = 900
Difference = 9000000 – 900
= 89,99,100 Ans.

Question 6.
Solution:
In 27650934
place value of 7 = 7000000
and face value of 7 = 7
Difference = 7000000 – 7
= 6999993 Ans.

Question 7.
Solution:
There are 900000 6-digits numbers in all
i.e. 999999 – 99999
= 900000 Ans

Question 8.
Solution:
There are 9999999 – 999999
= 9000000 7-digits numbers in all.

Question 9.
Solution:
In 1,00,000, there are 100 thousands. Ans.

Question 10.
Solution:
In 10000,000, there are 10000 thousands.

Question 11.
Solution:
Given Number = 738
Reversing its digits = 837
Difference between 738 and 837
= 837 – 738
= 99 Ans.

Question 12.
Solution:
Numbers after 9547999
= 9547999 + 1
= 9548000 Ans.

Question 13.
Solution:
Number first before 9900000
= 9900000 – 1
= 9899999 Ans.

Question 14.
Solution:
Number first before 10000000
= 10000000 – 1
= 9999999 Ans.

Question 15.
Solution:
3-digits numbers using 2, 3, 4 taking each digit only once will be
234, 243, 324, 342, 423, 432 Ans.

Question 16.
Solution:
The smallest number by using different digits 3, 1, 0, 5 and 7 will be
= 10357 Ans.

Question 17.
Solution:
The largest number formed by using different digits 2, 4, 0, 3, 6 and 9 will be
= 964320. Ans.

Question 18.
Solution:

(i) Seven hundred thirty five thousand eight hundred twenty-one.
(ii) Six million fifty seven thousand eight hundred ninety-four.
(iii) Fifty-six million nine hundred forty-three thousand eight hundred twenty-one.
(iv) Thirty-seven million five hundred two thousand ninety-three.
(v) Eighty-nine million three hundred fifty thousand sixty-four.
(vi) Ninety million seven hundred three thousand and six. Ans.

Question 19.
Solution:

OBJECTIVE QUESTIONS
Tick the correct answer in each of the following :

Question 20.
Solution:
(c) Because 6 is at lakh place.

Question 21.
Solution:
(a) Because face value is always same.

Question 22.
Solution:
(b) Because place value and face value of 5 in 87653421 are 50000 and 5.
difference
= 50000 – 5
= 49995.

Question 23.
Solution:
(b) Smallest counting number or natural number is 1.

Question 24.
Solution:
(b) Number of 4-digits numbers
= 9999 – 999 (i.e. these are 1000 to 9999)
= 9000

Question 25.
Solution:
(b) Number of 7-digit numbers (from 1000000 to 9999999)
= 9999999 – 999999
= 9000000

Question 26.
Solution:
(c) Numbers of 8-digit numbers (from 10000000 to 99999999)
= 99999999 – 9999999
= 90000000

Question 27.
Solution:
(b) Because 1000000 – 1
= 999999 Ans.

Hope given RS Aggarwal Solutions Class 6 Chapter 1 Number System Ex 1A are helpful to complete your math homework.

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