Fundamental Operations ICSE Class-6th Concise Selina Mathematics Ch-19

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Chapter-19. We provide step by step Solutions of Exercise / lesson-19 Fundamental Operations for ICSE Class-6 Concise Selina Mathematics. Our Solutions contain all type Questions of Exe-19 A, Exe-19 B, Exe-19 C and Exe-19 D to develop skill and confidence. Visit official Website  CISCE for detail information about ICSE Board Class-6 .

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Chapter-19


–: Select Topics :–

Exe-19 A,

 Exe-19 B,

Exe-19 C,

 Exe-19 D,


 Exercise – 19 A Fundamental Operations ICSE Class-6th Concise Selina Mathematics

Question- 1.

Fill in the blanks :
(i) 5 + 4 = ………… and 5x + 4x = ………….
(ii) 12 + 18 = ………… and 12x2y + 18x2y = ………….
(iii) 7 + 16 = ………….. and 7a + 16b = …………
(iv) 1 + 3 = ………… and x2y + 3xy2 = ………..
(v) 7 – 4 = …………… and 7ab – 4ab = …………..
(vi) 12 – 5 = ………… and 12x – 5y = ……………
(vii) 35 – 16 = ………….. and 35ab – 16ba = ………….
(viii) 28 – 13 = …………. and 28ax2 – 13a2x = ………….
Answer-1

(i) 5 + 4 = 9 and 5x + 4x = 9x
(ii) 12 + 18 = 30 and 12x2y + 18x2y = 30x2y
(iii) 7 + 16 = 23 and 7a + 16 b = 7a + 16b
(iv) 1 + 3 = 4 and x2y + 3xy2 = x2y + 3xy2
(v) 7 – 4 = 3 and 7ab – 4ab = 3ab
(vi) 12 – 5 = 7 and 12x – 5y = 12x – 5y
(vii) 35 – 16 = 19 and 35ab – 16ba = 19ab
(viii) 28 – 13 = 15 and 28ax2 – 13a2x = 28ax2 – 13a2x

Question- 2.

Fill in the blanks :
(i) The sum of – 2 and – 5 = …………. and the sum of – 2x and – 5x = …………….
(ii) The sum of 8 and – 3 = ………….. and the sum of 8ab and – 3ab = ………….

(iii) The sum of – 15 and – 4 = …………….. and the sum of – 15x and -4y = ………………

(iv) 15 + 8 + 3 = ……….. and 15x + 8y + 3x = …………….
(v) 12 – 9 + 15 = …………… and 12ab – 9ab + 15ba = ……………..
(vi) 25 – 7 – 9 = and 25xy – 7xy – 9yx = ……………
(vii) – 4 – 6 – 5 = …………. and – 4ax – 6ax – 5ay = …………….
Answer-2

(i) The sum of – 2 and – 5 = – 7 and the sum of – 2x and – 5x = -7x
(ii) The sum of 8 and -3 = 5 and the sum of 8ab and – 3ab = 5ab
(iii) The sum of – 15 and – 4 = – 19 and the sum of – 15x and – 4y = – 15x – 4y
(iv) 15 + 8 + 3 = 26 and 15x + 8y + 3x = 18x + 8y
(v) 12 – 9 + 15 = 18 and 12ab – 9ab + 15ba = 18ab
(vi) 25 – 7 – 9 = 9 and 25xy – 7xy – 9yx = 9xy
(vii) – 4 – 6 – 5 = – 15 and – 4ax – 6ax – 5ay = – 10ax – 5ay

Question -3.

Add:
(i) 8xy and 3xy
(ii) 2xyz, xyz and 6xyz
(iii) 2a, 3a and 4b
(iv) 3x and 2y
(v) 5m, 3n and 4p
(vi) 6a, 3a and 9ab
(vii) 3p, 4q and 9q
(viii) 5ab, 4ba and 6b
(ix) 50pq, 30pq and 10pr
(x) – 2y, – y and – 3y
(xi) – 3b and – b
(xii) 5b, – 4b and – 10b
(xiii) – 2c, – c and – 5c
Answer-3

(i) 8xy + 3xy = 11xy
(ii) 2xyz + xyz + 6xyz = (2 + 1 + 6) xyz = 9xyz

Fundamental Concept class -6 Concise Maths Exe-19.1 C Ans-3

Question -4.

Evaluate :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-A-4
Answer-4

(i) 6a – a – 5a – 2a = 6a – (1 + 5 + 2).a

= 6a – 8a = -2a

Fundamental Concept class -6 Concise Maths Exe-19 A Ans-4

Question -5.

Evaluate :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-A-5
Answer-5

Fundamental Concept class -6 Concise Maths Exe-19. A Ans-5

Question -6.

Subtract the first term from the second :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-A-6
Answer6

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-A ans 6

Question -7.

Simplify :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-A-7
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-A-7.1
Answer-7

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-A ans 7.1


Selina Solutions of Exercise – 19 B Fundamental Operations for ICSE Class-6th Concise Mathematics

Question-1

Find the sum of :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-1
Answer-1

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 1.1

Question- 2.

Add the following expressions :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-2
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-2.1
Answer-2
Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 2

Question- 3.

Evaluate :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-3
Answer-3

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 3

Question -4.

Subtract :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-4
Answer-4

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 4

Question -5.

selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-B-5
Answer-5

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 5

Question- 6.

From the sum of x + y – 2z and 2x – y + z subtract x + y + z.
Answer-6

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 6

Question -7.

From the sum of 3a – 2b + 4c and 3b – 2c subtract a – b – c.
Answer-7:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 7

Question -8.

Subtract x – 2y – z from the sum of 3x – y + z and x + y – 3z.
Answer-8:

(3x – y + z) + (x + y – 3 z) – (x – 2y – z)
= 3x – y + z + x + y – 3z – x + 2y + z
= 3x + x – x – y + y + 2y + z + z – 3z
= 3x + 2y – z

Question -9.

Subtract the sum of x + y and x – z from the sum of x – 2z and x + y + z
Answer-9

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 9

Question- 10.

By how much should x + 2y – 3z be increased to get 3x ?
Answer-10:

3x – (x + 2y – 3z)
= 3x – x – 2y + 3z
= 2x – 2y + 3z

Question- 11.

The sum of two expressions is 5x2 – 3y2. If one of them is 3x2 + 4xy – y2, find the other.
Answer-11:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 11

Question -12.

The sum of two expressions is 3a2 + 2ab – b2. If one of them is 2a2 + 3b2, find the other.
Answer-12:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-B ans 12


Concise Maths Selina solutions of Exe-19 C Fundamental Operations for ICSE Class-6th 

Question- 1.

Fill in the blanks :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-1
Answer-1:

(i) 6 x 3 = 18 and 6x x 3x  = 18x2

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -1

Question- 2.

Fill in the blanks :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-2
Answer-2:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -2

Question- 3.

Find the value of :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-3
Answer-3:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -3

Question -4.

Multiply :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-4
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-4.1
Answer-4:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -4

Question- 5.

Multiply :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-5
Answer-5:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -5

Question -6.

Multiply :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-6
Answer-6:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -6

Question- 7.

Multiply :
(i) x + 2 and x + 10
(ii) x + 5 and x – 3
(iii) x – 5 and x + 3
(iv) x – 5 and x – 3
(v) 2x+ y and x+ 3y
(vi) (3x – 5y) and (x + 6y)
(vii) (x + 9y) and (x – 5y)
(viii) (2x + 5y) and (2x + 5y)
Answer-7:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -7

Question -8.

Multiply :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-8
Answer-8:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -8

Question -9.

Find the product of :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-C-9
Answer-9:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-C ans -9.1


Exercise – 19 D Fundamental Operations ICSE Class-6th Concise Selina Mathematics

Question-1

Divide :

selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-1
Answer-1:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-D Ans-1

Question -2.

Simplify :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-2
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-2.1
Answer-2:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-D Ans-2

Question- 3.

Divide :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-3
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-3.1
Answer-3:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-D Ans-3.1

Question- 4.

Simplify :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-4
Answer-4:

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-D Ans-4

Question -5.

Divide :
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-5
selina-concise-mathematics-class-6-icse-solutions-fundamental-operations-D-5.1
Answer-5

Fundamental Operations ICSE Class-6th Concise Selina Mathematics Exe-19-D Ans-5.1

— End of Fundamental Operations ICSE Class-6th Solutions :–

Return to – Concise Selina Maths Solutions for ICSE Class -6

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