## NCERT Solutions for Class 7 Maths Chapter 12 (EX 12.2)

## FAQs on NCERT Solutions for Class 7 Maths Chapter 12: Symmetry - Exercise 12.2

1. What is the main focus of Class 7 Maths Chapter 10 Exercise 10.2 Solutions?

Exercise 10.2 deals with evaluating and simplifying algebraic expressions.

2. What are algebraic expressions according to class 7 maths chapter algebraic expressions exercise 10.2?

Algebraic expressions are combinations of variables, numbers, and mathematical operations (+, -, *, /).

3. What does it mean to evaluate an expression in Maths Class 7 Chapter 10 Exercise 10.2?

Evaluating an expression means finding its numerical value by substituting specific numbers for the variables.

4. How do I know which terms to combine when simplifying expressions?

As we studied in class 7 maths chapter algebraic expressions exercise 10.2, You can combine terms only if they are "like terms." Like terms have the same variable raised to the same power.

6. What are some examples of like terms in Class 7 Maths Exercise 10.2 Answer?

3x^2, 5x^2 (both have x raised to the power of 2)

-2y, 7y (both have y raised to the power of 1, which is understood)

7. What are some examples of, unlike terms we studied in Class 7 Maths Exercise 10.2 Answer?

3x^2, 5x (different exponents)

2a, 3b (different variables)

8. What's the importance of PEMDAS/BODMAS?

PEMDAS/BODMAS tells you the correct order of operations to use when evaluating expressions with multiple operations (+, -, *, /).

9. How does PEMDAS/BODMAS work?

PEMDAS/BODMAS stands for Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right).

You perform operations within parentheses first, then exponents, then multiplication and division (whichever comes first from left to right), and finally addition and subtraction (from left to right).

10. What are some tips for solving problems in class 7 maths chapter algebraic expressions exercise 10.2?

Read the question carefully to understand what's being asked.

Identify the variables and their values (if provided).

Use PEMDAS/BODMAS to evaluate expressions with multiple operations.

Combine like terms whenever possible to simplify the expression.

11. Where can I find solutions to the problems in Maths Class 7 Chapter 10 Exercise 10.2?

You can refer to your NCERT textbook, solution manuals, or online resources for detailed solutions to the problems in Exercise 10.2 available at Vedantu.