Squaring any number that ends in 5 is a simple two-step process:
3 × 4 = 12
35² = 1225 = 1225
With this quick trick, squaring numbers like 15, 25, 35, and so on becomes effortless!
5² = [0×1]25 = [0]25 = 25
15² = [1×2]25 = [2]25 = 225
25² = [2×3]25 = [6]25 = 625
35² = [3×4]25 = [12]25 = 1225
45² = [4×5]25 = [20]25 = 2025
55² = [5×6]25 = [30]25 = 3025
65² = [6×7]25 = [42]25 = 4225
95² = [9×10]25 = [90]25 = 9025