Adding and Subtracting Integers for Class 7
Integers are positive and negative whole numbers, including zero. Adding and subtracting integers involves understanding the rules for combining positive and negative numbers.

Addition of Integers
- When adding integers with the same sign, keep the sign and add the numbers.
- When adding integers with different signs, subtract the smaller number from the larger number and keep the sign of the larger number.
- For example, (-3) + (-5) = -8 and (-3) + 5 = 2.

Subtraction of Integers
- To subtract integers, add the opposite.
- Change the subtraction sign to addition and change the sign of the number being subtracted.
- For example, 7 - (-3) becomes 7 + 3 = 10.

Rules to Remember
- When adding or subtracting integers, always pay attention to the signs.
- A positive number plus a positive number equals a positive number.
- A negative number plus a negative number equals a negative number.
- A positive number plus a negative number may be positive or negative depending on the numbers involved.

Practice Problems
1. (-4) + 6 = ?
2. 8 - (-2) = ?
3. (-5) + (-7) = ?
4. 3 - 9 = ?
By following these rules and practicing with different examples, students can master the addition and subtraction of integers in Class 7.