Download Selina Solutions Concise Mathematics Class 6 Chapter 1 Number System

Download Selina Solutions Concise Mathematics Class 6 Chapter 1 Number System 

Selina Solutions Concise Mathematics Class 6 Chapter 1 Number System, students are providing an accurate solution which will help you understand the nature of the solution to the questions. In Selina Solutions class 6 maths, various dimensions of the number system have been solved quite simply.Students who have difficulty in solving difficult questions can take advantage of it, all the difficult questions have been solved in brief. These solutions will play an important role for the students and at the same time their self-confidence will also increase which will surely get good numbers in the upcoming exams.

Selina Studyit Maths chapter 1 Number System covered various topics like Natural numbers, whole numbers,comparing whole numbers, combining or uniting numbers and estimating numbers etc. Selina PDF Solution for Class 6 will be very helpful in solving logical questions of Numbers System.Selina Solutions Concise Mathematics Class 6 Chapter 1 Number System all solutions solved by top ICSE expert Teacher which is provided by Maths Pdf Solution free of cost.

Selina Mathematics Class 6 Chapter 1 Number System

Selina mathematics class 6 chapter 1 Number System consist only two Exercise 1(A) and Exercise 1(B)

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Selina PDF Class 6 chapter 1 Number System

Selina ICSE Solutions Concise Mathematics Class 6 Chapter 1 Number System 
                
Before solving the questions of the chapter, you must have knowledge of Indian number system.

INDIAN   NUMBERING  SYSTEM
Ten-lakh	Lakh	Ten-thousand	Thousand	Hundred	Ten	One
1000000	100000	10000	1000	100	10	1

                                       

                                     Exercise 1(A)


Question 1.
Which is greater ?
(i) 537 or 98
(ii) 2428 or 529
(iii) 2,59,467 or 10,35,729

Solution:
(i) 537 or 98 
 since 537 three digiit number and 98 is two digit number.
Hence, 537>98 and 537 is greater

(ii) 2428 or 529
since 2428 is four digit number and 529 is three digit number.
Hence, 2428 > 529 and 2428 is greater

(iii) 2,59,467 or 10,35,729
since 10,35,729 is seven digit number and 2,59,467 is six digit number.
Hence, 10,35,729 > 2,59,467 and 10,35,729 is greater

Question 2.
Which is smaller ?
(i)   428 or 437
(ii)  2497 or 2597
(iii) 3297 or 3596

Solution:-
(i)   428 or 437
here the both number are three digits.
hundreds place number are same but tens place number of first number is 2 and tens place number of second number is 3(greater)
so, 3 >2
428 < 437
437 is greater

(ii) 2497 or 2597
Here the both number are four digit
and thousands place number of both number is 2, hundreds place of first number is 4 and hundreds place of second number is 5.
so, 4 < 5
2497 < 2597,
2597 is greater

(iii) 3297 or 3596
Here the both number are four digit
and thousands place number of both number is 3, hundreds place of first number is 2 and hundreds place of second number is 5.
so, 2 < 5
3297 < 3596
3596 is greater

Question 3.
Which is greater ?
(i)   45293 or 45427
(ii)  380362 or 381007
(iii) 63520  or 63250

Solution:- 
(i) 45293 or 45427
Here the both number are five digit.
 ten thousands place number of both number is 4(same), thousands place number of both number is 5 (same), hundreds place of first number is 2 and hundreds place of second number is 4.
so, 2 < 4
45293 < 45427

(ii)  380362 or 381007
Here the both number are Six-digit.
Lakh place number of both number is 3 (same) and ten thousands place number of both number is 8 (also same). thousands place number of first number is 0,thousands place number of second number is 1.
so, 0 < 1
380362 < 381007

(iii) 63520  or 63250
45293 or 45427
Here the both number are five digit.
 ten thousands place number of both number is 6(same), thousands place number of both number is 3 (same), hundreds place of first number is 5 and hundreds place of second number is 2.
so, 5 > 2
63520  > 63250

Question 5.
By making a suitable Chart, compare
(i)  540276 and 369998
(ii) 6983245 and 6893254

Solutions:-

(i)  540276 and 369998

5	4	0	2	7	6
3	6	9	9	9	8

Here, the both having six-digit number
and just compare the lakh place digit.
lakh place digit of first number is 5 and lakh place digit of second number is 3.
so, 5 > 3
540276 > 369998
540276 is greater

(ii) 6983245 and 6893254

Here, the both having seven digit number. Ten lakh place digit of both number is same i.e. 6

Now, just compare the lakh place digit.
lakh place digit of first number is 9 and Ten lakh place digit of second number is 8.
so, 9 > 8
6983245 > 6893254
6983245 is greater
                                              

6	9	8	3	2	4	5
6	8	9	3	2	5	4

Question 5.
 Compare the numbers within the following table by writing them in ascending order.

5   4     3       2      9      7       2

2    3   1     0      6       2      9       3

5   2     2       3      7      9       1

2    3    1    8       2      6       3      4

5    4    3     4       4      7      8      2

 Solution:-
The given number in ascending order are as:
54344782 > 23182634 > 23106293 > 5432972 > 5223791 

5    4    3     4       4      7      8      2

2    3    1    8       2      6       3      4

2    3    1     0      6       2      9       3

5    4     3       2      9      7       2

5    2     2       3      7      9       1

Question 6.
Use table from to compare the numbers in desending order 543287, 5482900, 2732940, 43877, 78396, and 4999

Solution:-
The given number in desending order are as:

4    9   9     9

4    3   8    7    7

7    8   3    9    6

5   4   3    2    8    7

2    7   3   2    9    4    0

5    4    8   2   9    0    0

4999 < 43877 < 78396 < 543287 < 2732940 < 5482900

Question 7.
Find the smallest and the heightest numbers in each case given below.
(i) 983, 5754, 84, and 5942
(ii) 32849, 53626, 5499, and 54909

Solution:-
(i) 983, 5754, 84, and 5942

Greatest Number-  5942
Smallest Number- 84

(ii) 32849, 53626, 5499, and 54909

Greatest Number -  54909
Smallest Number -  5499

Question 8.
From the greatest and the smallest 4 digit numbers using the given digits without repetition.
(i)    3, 7, 2 and 5
(ii)   6, 1, 4 and 9
(iii)  7, 0, 4 and 2
(iv)  1, 8, 5 and 3
(v)   9, 6, 0 and 7

Solution:- 
(i) The 4 digit are 3, 7, 2 and 5 given,
Greatest 4- digit number -7532
Smallest 4-digit number - 2357

(ii)   The 4 digit are 6, 1, 4 and 9 given,
Greatest 4- digit number - 9641
Smallest 4-digit number - 1469

(iii) The 4 digit are 7, 0, 4 and 2 given
Greatest 4- digit number - 7420
Smallest 4-digit number - 2047

(iv)   The 4 digit are 1, 8, 5 and 3 given
Greatest 4- digit number - 8531
Smallest 4-digit number - 1358

(v)    The 4 digit are 9, 6, 0 and 7 given
Greatest 4- digit number -  9760
Smallest 4-digit number -  6079

Question 9.
From the greatest and smallest 3-digit numbers using any three different digits with the condition that digit 6 is always at the unit (one's place).

Solution:-
Condition- Three-digit number of three different digit is 6(one's place)
therefore,
Greatest 3-digit number -986
Smallest 3-digit number - 106

Question 10.
From the greatest and smallest 4-digit numbers using any four different digits with the condition that digit 5 is always at the ten's(ten's place).

Solution:-
Condition- Four-digit number of four different digit is 5(ten's place)
therefore,
Greatest 4-digit number - 9851
Smallest 4-digit number - 1052

Question 11.
 Fill in the blanks:
(i) The largest number of 5-digit is.................and the smallest number of 6-digit is..........
(ii) The difference between smallest number of four digits and the largest number of three digits = ......................... - ............................. = ......................
(iii) The sum of the smallest number of three digits and largest number of two digit = ..............+.............. = ......................
(iv) On addition one to the largest five digit number, we get ......... which is the smallest ............digit number.
(v) On subtracting one from the smallest four digit number. we get ......... which is the ....................three digits number.

Solution:-

(i) The largest number of 5-digit is 99999 and the smallest number of 6-digit is 100000
(ii) The difference between smallest number of four digits and the largest number of three digits = 1000 - 999 =  1
(iii) The sum of the smallest number of three digits and largest number of two digit = 100 + 99 = 199
(iv) On addition one to the largest five digit number, we get 100000 which is the smallest six-digit number.
(v) On subtracting one from the smallest four digit number. we get 999 which is the greatest three digits number.

Question 12.
From the largest number with the digits 2, 3, 5. 9, 6 and 0 without repetition of digits.

Solution:-
largest number -  965320

Question 13.
Write the smallest and the greatest numbers of 4-digits without repetition of digits.

Solution:-
largest number   - 9876
smallest number - 1023

Question 14.
find the greatest and smallest five digit numbers with 8 in hundred's place and with all thedigits different.

Solution:-
Greatest 5-digits number = 97865 and smallest 5-digits number = 10823

Question 15.
find the sum of the largest and the smallest four-digits numbers.

Solution:-
Greatest  four digits number = 9999
 smallest four digits number  = 1000
Sum =  9999 + 1000 = 10999

Question 16.
find the differeence of the largest and the smallest six-digits numbers.
Solution:-
Greatest  six digits number = 999999
 smallest six digits number  = 100000
difference = 999999 - 100000 = 899999

Question 17.
(i)  how many four digit numbers are there between 999 and 3000?
(ii) how many  four digit number are there between 99 and 3000?

Solution:-
(i)  2999 - 999 = 2000 numbers between 999 and 3000?
(ii) 2999 - 999 = 2000 numbers between 99 and 3000?

Question 18.
How many four digit numbers are there between 500 and 3000 ?

Solution:-
2999 - 999 = 2000 numbers between 500 and 3000

Question 19.
Write all the possible three digit numbers using the digit 3, 6 and 8 only. if the repetition of digits is not allowed.

Solution:-
Possible three digit numbers form by the digit 3, 6 and 8
836, 863, 368, 386, 638, 683

Question 20.
Make the greatest and the smallest 4-digits numbers using the digits 5, 4, 7 and 9 (without repeating) and with the condition that:
(i)    7 is at unit place.
(ii)   9 is at ten's place
(iii)  4 is at hundred place

Solution:-
(i)    smallest 4-digits numbers using the digits 5, 4, 7 and 9  =  4597 and 9547 (7 is at unit place)
(ii)   smallest 4-digits numbers using the digits 5, 4, 7 and 9  =  9547 and 7594 (9 is at ten's place)
(iii) smallest 4-digits numbers using the digits 5, 4, 7 and 9  =  5479 and 9475 (4 is at hundred                                                                                                                                                              place)




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Selina PDF Class 6 chapter 1 Number System