Document for Maths Answers for Class 8

Introduction:
Maths is a subject that requires a lot of practice to master. Having a document with all the answers to the questions can be extremely helpful for students to check their work and improve their understanding of the concepts. Here is a document that provides answers to some of the common questions in Mathematics for Class 8 students.

Answers to Common Questions:

1. Algebra:
- Simplify the following expressions:
- 3x + 2y - 5x + 4y
- Answer: -2x + 6y
- 2a + 3b - 4a - 2b
- Answer: -2a + b

2. Geometry:
- Find the perimeter of a rectangle with length 8cm and width 5cm:
- Answer: Perimeter = 2(8+5) = 26cm
- Find the area of a circle with radius 4cm:
- Answer: Area = πr^2 = π(4)^2 = 16π cm^2

3. Fractions:
- Simplify the following fractions:
- 12/30
- Answer: 2/5
- 20/25
- Answer: 4/5

4. Decimals:
- Add the following decimals:
- 3.14 + 1.23 + 5.67
- Answer: 10.04
- Subtract the following decimals:
- 7.89 - 4.56
- Answer: 3.33

Conclusion:
Having a document with answers to common Maths questions can be extremely helpful for Class 8 students to improve their understanding of the concepts and to check their work. However, it is important to remember that simply memorizing the answers will not help in the long run. It is important to practice and understand the reasoning behind the solutions to truly master the subject.