# Number System Class 6 RS Aggarwal Exe-1A Goyal Brothers ICSE Maths Solutions

Number System Class 6 RS Aggarwal Exe-1A Goyal Brothers ICSE Maths Solutions.  We provide step by step Solutions of lesson-Number System  for ICSE Class-6 Foundation RS Aggarwal Mathematics of Goyal Brothers Prakashan . Our Solutions contain all type Questions of Exe-1 A to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-6 Mathematics.

## Number System Class 6 RS Aggarwal Exe-1A Goyal Brothers ICSE Maths Solutions Ch-1

 Board ICSE Publications Goyal brothers Prakashan Subject Maths Class 6th Ch-1 Number System Writer RS Aggrawal Book Name Foundation Topics Solution of Exe-1A Academic Session 2023 – 2024

### Exercise- 1A Number System

Ch-1 Class 6 RS Aggarwal  ICSE Maths Solutions Foundation RS Aggarwal Mathematics of Goyal Brothers Prakashan

Page- 15

##### Que-1: Write the numeral for each of the following :

(i) Eight lakh five thousand twelve.
(ii) Thirteen lakh three thousand eight
(iii) Three crore three lakh three thousand three
(iv) Five crore twelve lakh eighteen
(v) Nine crore nineteen lakh five thousand eight
(vi) Six crore thirty five lakh nineteen thousand sixteen
(vii) Eleven crore twenty two lakh thirty three thousand four hundred fifty

Solution- (i) 8,05,012
(ii) 13,03,008
(iii) 3,03,03,003
(iv) 5,12,00,018
(v) 9,19,05,008
(vi) 6,35,19,016
(vii) 11,22,33,450

##### Que-2: Write each of the following in words :

(i) 8,08,080
(ii) 15,07,063
(iii) 87,08,109
(iv) 2,14,05,063
(v) 3,03,03,103
(vi) 10,06,05,368

Solution- (i) Eight lakh eight thousand eighty
(ii) Fifteen lakh seven thousand sixty three
(iii) Eighty seven lakh eight thousand one hundred nine
(iv) Two crore fourteen lakh five thousand sixty three
(v) Three crore three lakh three thousand one hundred three
(vi) Ten crore six lakh five thousand three hundred sixty eight.

##### Que-3: (i) Write the place value of 4 in 8,46,572 (ii)Write the place value of 7 in 7,30,493 (iii) Write the place value of 6 in 23,76,400 (iv) Write the place value of 9 in 19,63,605 (v) Write the place value of 8 in 20,07,189 (vi) Write the place value of 3 in 23,608

Solution- (i) 40,000
(ii) 7,00,000
(iii) 6,000
(iv) 9,00,000
(v) 80
(vi) 3,000

##### Que-4: Find the difference between the place-values of two sixes in 6,56,348.

Solution- The number is: 6,56,348

The first six is in the ten-thousands place, and the second six is in the units place.

So, the place-values of the two sixes are:

Six at the thousands place: 6×1,000 = 6,000

Six at the one-lakhs place: 6 x 1,00,000 = 6,00,000
The difference between these place-values is:

6,00,000−6,000 = 5,94,000 Ans.

##### Que-5: Find the difference between the place-value and the face-value of 8 in the numerical 5,86,273.

Solution-  Place value of 8 = 8×10,000 = 80,000

Face value of 8 = 8

Difference 80,000 – 8 = 79,992

Hence the difference between place value and the face value of 8 is 79,992

##### Que-6: Write each of the following in expanded form :

(i) 5,16,287
(ii) 13,25,694
(iii) 8,08,808
(iv) 64,72,319
(v) 1,36,04,107
(vi) 9,36,50,519

Solution- (i) (5×100,000)+(1×10,000)+(6×1,000)+(2×100)+(8×10)+(7×1)
(ii) (1×10,00,000)+(3×1,00,000)+(2×10,000)+(5×1,000)+(6×100)+(9×10)+(4×1)
(iii) (8×100,000)+(8×1,000)+(8×100)+(8×1)
(iv) (6×10,00,000)+(4×1,00,000)+(7×10,000)+(2×1,000)+(3×100)+(1×100)+(9×1)
(v) (1×100,00,000) + (3×10,00,000) + (6×1,00,000) + (4×1,000) + (1×100) + (7×1)
(vi)(9×1,00,00,000)+(3×10,00,000)+(6×1,00,000)+(5×10,000)+(5×100)+(1×10)+(9×1)

##### (i) (5×1,00,000) + (1×10,000) + (4×1,000) + (7×100) + (3×10) + (8×1) (ii) (6×1,00,000) + (6×1,000) + (3×10) + (6×1) (iii) (1×10,00,000) + (2×1,00,000) + (3×10,000) + (4×100) + (6×10) + (9×1) (iv) (2x10,00,000) + (3x1,00,000) + (7×1,000) + (9×100) + (4×10) + (5×1) (v) (9x10,00,000) + (8×1,000) + (8×100) + (8×1)

Solution- (i) 5,14,738
(ii) 6,06,036
(iii) 12,30,469
(iv) 23,07,945
(v) 90,08,808

##### Que-8: Write the successor of each of the following :

(i) 6,001
(ii) 1,099
(iii) 12,749
(iv) 2,19,708
(v) 62,399

Solution- (i) 6,002
(ii) 1,100
(iii) 12,750
(iv) 2,19,709
(v) 62,400

(i) 99
(ii) 1,305
(iii) 32,000
(iv) 1,65,000

Solution- (i) 98
(ii) 1,304
(iii) 31,999
(iv) 1,64,999

##### Que-10: Write the whole number whose successor is :

(i) 100
(ii) 6,299
(iii) 71,650
(iv) 42,000

Solution-  (i) 99
(ii) 6,298
(iii) 71,649
(iv) 41,999

##### Que-11: Write the whole number whose predecessor is :

(i) 1,000
(ii) 3,189
(iii) 3,001
(iv) 8,000
(v) 9,999

Solution- (i) 1,001
(ii) 3,190
(iii) 3,002
(iv) 8,001
(v) 10,000

##### Que-12: Write down three consecutive whole numbers succeeding 72,597.

Solution- 72,598; 72,599; 72,600

##### Que-13: Write down three consecutive whole numbers just preceding 5,10,001.

Solution- 5,10,000; 5,09,999; 5,09,998

##### Que-14: How many 6-digit numbers are there in all?

Solution- 9,00,000

##### Que-15: (i) Write the largest 8-digit number. (ii) Write the smallest 8-digit number.

Solution- (i) 9,99,99,999
(ii) 1,00,00,000

##### Que-16: Write all possible 2-digit numbers formed by the digits 3,7 and 9, when repetition of digits is not allowed.

Solution- the possible 2-digit numbers are: 37, 39, 73, 79, 93, and 97.

##### Que-17: (i) Write all possible 3-digit numbers that can be formed by the digits 1,3 and 7, using each digit only once in each number. (ii) Write all possible 3-digit numbers that can be formed by the digits 9,2 and 0, using each digit only once in each number.

Solution- (i) 137, 173, 317, 371, 713, 731
(ii) 209, 290, 902, 920

##### Que-18: (i) Write the smallest 4-digit number that can be formed by the digits 0,1,3 and 6, using each digit only once. (ii) Write the greatest 4-digit number that can be formed by the digits 0,2,7 and 5, using each digit only once.

Solution- (i) 1,036
(ii) 7,520

Solution- 1,023

##### Que-20: Write the greatest 4-digit number of four different digits.

Solution- 9,876

— : end of Number System Class 6 RS Aggarwal Exe-1A Goyal Brothers ICSE  Foundation Maths Solutions:–