Some facts about square numbers and their roots.
Squares and roots When a number or integer (not a fraction) is multiplied by itself, the resultant is called a 'Square Number' . For example, 3 multiplied by 3 is equal to 3-squared or 3 x 3 = 3 2 . Some interesting facts This particular collection of numbers are called square numbers (or squared numbers) for the simple reason that they form the area of a square. As squares have equal sides, finding the area is simple – just “square” (multiply by itself) one of its sides! As we know that all the perfect square number ends with 1,4,9,6,5,0. So, a number having 2,3,7 or 8 at unit's place is never a perfect square. 1. The square numbers end in 0, 1, 4, 5, 6 or 9 only. 2. If a number ends with 1 or 9, its square ends with 1. 3. If a number ends with 2 or 8, its square ends with 4. 4. If a number ends with 3 or 7, its square ends with 9. 5. If a number ends with 4 or 6, its square ends with 6. 6. If a number ends with 5 or 0, its square also ends with 5 or 0, re...