Squaring 2-digit numbers can seem challenging, but with simple tricks, you can quickly compute them in your head. In this guide, we’ll cover shortcuts to find squares of numbers ending in 5, 4, 6, and 1. These mental math techniques will help students, competitive exam aspirants, and math enthusiasts.
For any 2-digit number ending in 5 (e.g., 25, 35, 45), use this simple trick:
(AB)² = A × (A + 1) | 25
Find (35)²:
For numbers ending in 4, use this method:
(A4)² = A × (A + 1) × 100 + 16
Find (24)²:
For numbers ending in 6, apply this formula:
(A6)² = A × (A + 1) × 100 + 36
Find (26)²:
For numbers ending in 1, follow this technique:
(A1)² = A × A × 100 + 2A × 10 + 1
Find (21)²:
Using these tricks, you can mentally square numbers ending in 5, 4, 6, and 1 within seconds. These techniques are particularly useful for competitive exams and daily calculations. Master them to boost your mental math skills!