मराठी

Selina solutions for Mathematics [English] Class 6 chapter 21 - Framing Algebraic Expressions (Including Evaluation) [Latest edition]

Advertisements

Chapters

Selina solutions for Mathematics [English] Class 6 chapter 21 - Framing Algebraic Expressions (Including Evaluation) - Shaalaa.com
Advertisements

Solutions for Chapter 21: Framing Algebraic Expressions (Including Evaluation)

Below listed, you can find solutions for Chapter 21 of CISCE Selina for Mathematics [English] Class 6.


Exercise 21
Exercise 21

Selina solutions for Mathematics [English] Class 6 21 Framing Algebraic Expressions (Including Evaluation) Exercise 21

1.1

Write in the form of an algebraic expression:

Perimeter (P) of a rectangle is two times the sum of its length (l) and its breadth (b).

1.2

Write in the form of an algebraic expression:

Perimeter (P) of a square is four times its side.

1.3

Write in the form of an algebraic expression:

Area of a square is square of its side.

1.4

Write in the form of an algebraic expression:

Surface area of a cube is six times the square of its edge.

2.1

Express the following as an algebraic expression:

The sum of x and y minus m.

2.2

Express the following as an algebraic expression:

The product of x and y divided by m.

2.3

Express the following as an algebraic expression:

The subtraction of 5m from 3n and then adding 9p to it.

2.4

Express the following as an algebraic expression:

The product of 12, x, y and z minus the product of 5, m and n.

2.5

Express the following as an algebraic expression:

Sum of p and 2r – s minus sum of a and 3n + 4x.

3

Construct a formula for the following:

Total wages (₹ W) of a man whose basic wage is (₹ B) for t hours week plus (₹ R) per hour, if he Works a total of T hours.

4.1

If x = 4, evaluate:

3x + 8

4.2

If x = 4, evaluate:

x2 – 2x

4.3

If x = 4, evaluate:

`"x"^2/2`

5.1

If m – 6, evaluate:

5m − 6

5.2

If m – 6, evaluate:

2m2 + 3m

5.3

If m – 6, evaluate:

(2m)2

6.1

If x = 4, evaluate:

12x + 7

6.2

If x = 4, evaluate:

5x2 + 4x

6.3

If x = 4, evaluate:

`"x"^2/8`

7.1

If m = 2, evaluate:

16m – 7

7.2

If m = 2, evaluate:

15m2 – 10m

7.3

If m = 2, evaluate:

`1/4xx"m"^3`

8.1

If x = 10, evaluate:

100x + 225

8.2

If x = 10, evaluate:

6x2 – 25x

8.3

If x = 10, evaluate:

`1/50xx"x"^3`

9.1

If a = – 10, evaluate:

5a

9.2

If a = – 10, evaluate:

a2

9.3

If a = – 10, evaluate:

a3

10.1

If x = – 6, evaluate:

11x

10.2

If x = – 6, evaluate:

4x2

10.3

If x = – 6, evaluate:

2x3

11.1

If m = – 7, evaluate:

12m

11.2

If m = – 7, evaluate:

2m2

11.3

If m = – 7, evaluate:

2m3

12

Find the average (A) of four quantities p, q, r and s. If A = 6, p = 3, q = 5 and r = 7; find the value of s.

13.1

If a = 5 and b = 6, evaluate:

3ab

13.2

If a = 5 and b = 6, evaluate:

6a2b

13.3

If a = 5 and b = 6, evaluate:

2b2

14.1

If x = 8 and y = 2, evaluate:

9xy

14.2

If x = 8 and y = 2, evaluate:

5x2y

14.3

If x = 8 and y = 2, evaluate:

(4y)2

15.1

If x = 5 and y = 4, evaluate:

8xy

15.2

If x = 5 and y = 4, evaluate:

3x2y

15.3

If x = 5 and y = 4, evaluate:

3y2

16.1

If y = 5 and z = 2, evaluate:

100yz

16.2

If y = 5 and z = 2, evaluate:

9y2z

16.3

If y = 5 and z = 2, evaluate:

5y2

16.4

If y = 5 and z = 2, evaluate:

(5z)3

17.1

If x = 2 and y = 10, evaluate:

30xy

17.2

If x = 2 and y = 10, evaluate:

50xy2

17.3

If x = 2 and y = 10, evaluate:

(10x)2

17.4

If x = 2 and y = 10, evaluate:

5y2

18.1

If m = 3 and n = 7, evaluate:

12mn

18.2

If m = 3 and n = 7, evaluate:

5mn2

18.3

If m = 3 and n = 7, evaluate:

(10m)2

18.4

If m = 3 and n = 7, evaluate:

4n2

19.1

If a = − 10, evaluate:

3a – 2

19.2

If a = − 10, evaluate:

a2 + 8a

19.3

If a = − 10, evaluate:

`1/5xx"a"^2`

20.1

If x = − 6, evaluate:

4x – 9

20.2

If x = − 6, evaluate:

3x2 + 8x

20.3

If x = − 6, evaluate:

`"x"^2/2`

21.1

If m = − 8, evaluate:

2m + 21

21.2

If m = − 8, evaluate:

m2 + 9m

21.3

If m = − 8, evaluate:

`"m"^2/4`

22.1

If p = − 10, evaluate:

6p + 50

22.2

If p = − 10, evaluate:

3p2 – 20p

22.3

If p = − 10, evaluate:

`"p"^2/50`

23.1

If y = − 8, evaluate:

6y + 53

23.2

If y = − 8, evaluate:

y+ 12y

23.3

If y = − 8, evaluate:

`"y"^3/4`

24.1

If x = 2 and y = − 4, evaluate:

11xy

24.2

If x = 2 and y = − 4, evaluate:

5x2y

24.3

If x = 2 and y = − 4, evaluate:

(5y)2

24.4

If x = 2 and y = − 4, evaluate:

8x2

25.1

If m = 9 and n = − 2, evaluate 4mn

25.2

If m = 9 and n = − 2, evaluate 2m2n

25.3

If m = 9 and n = − 2, evaluate (2n)3

26.1

If m = − 8 and n = − 2, evaluate:

12mn

26.2

If m = − 8 and n = − 2, evaluate:

3m2n

26.3

If m = − 8 and n = − 2, evaluate:

(4n)2

27.1

If x = − 5 and y = − 8, evaluate:

4xy

27.2

If x = − 5 and y = − 8, evaluate:

2xy2

27.3

If x = − 5 and y = − 8, evaluate:

4x2

27.4

If x = − 5 and y = − 8, evaluate:

3y2

28

Find T, if T = 2a – b, a = 7 and b = 3.

29

From the formula B = 2a2 – b2, calculate the value of B when a = 3 and b = − 1.

30

The wages ₹ W of a man earning ₹ x per hour for t hours are given by the formula W = xt. Find his wages for working 40 hours at a rate of ₹ 39.45 per hour.

31

The temperature in the Fahrenheit scale is represented by F and the temperature in the Celsius scale is represented by C. If F = `9/5` × C + 32, find F when C = 40.

Solutions for 21: Framing Algebraic Expressions (Including Evaluation)

Exercise 21
Selina solutions for Mathematics [English] Class 6 chapter 21 - Framing Algebraic Expressions (Including Evaluation) - Shaalaa.com

Selina solutions for Mathematics [English] Class 6 chapter 21 - Framing Algebraic Expressions (Including Evaluation)

Shaalaa.com has the CISCE Mathematics Mathematics [English] Class 6 CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Mathematics [English] Class 6 CISCE 21 (Framing Algebraic Expressions (Including Evaluation)) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Selina textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Mathematics [English] Class 6 chapter 21 Framing Algebraic Expressions (Including Evaluation) are Evaluation of Algebraic Expressions, Algebraic Expressions.

Using Selina Mathematics [English] Class 6 solutions Framing Algebraic Expressions (Including Evaluation) exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Mathematics [English] Class 6 students prefer Selina Textbook Solutions to score more in exams.

Get the free view of Chapter 21, Framing Algebraic Expressions (Including Evaluation) Mathematics [English] Class 6 additional questions for Mathematics Mathematics [English] Class 6 CISCE, and you can use Shaalaa.com to keep it handy for your exam preparation.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×