Squaring Numbers Ending with 5

When you square any number ending with 5, the result always ends with 25. There is a quick and easy method to find the square without actually multiplying the entire number.

Method:

1. Consider a number ending with 5, for example 45
2. Multiply 4 by 5 (follower, first number after 4).
3. Write down 20 and next to it 25.
4. Result is 2025

So all you need to calculate is product of numbers before 5 and their follower.

Examples:

• 15² = (1*2)25 =225
• 95² = (9*10)25 =9025
• 115² = (11*12)25 = 13225
  
  

This method works for any number ending with 5, making squaring quick and efficient!