Square Numbers Ending with 5 in Seconds
A quick mental maths trick that saves time in exams!
To square a number ending with 5:
Step 1: Take the number before 5 → e.g. for 25, it's 2
Step 2: Multiply it with its successor → 2 × 3 = 6
Step 3: Add 25 at the end → 625
✅ So 25² = 625This works for 15², 35², 45², 95² — try them!