Square Roots. A square root goes the other way: 3 squared is 9, so a square root of 9 is 3. A square root of a number is ... ... a value that can be multiplied by itself to give the original number.A square root of 9 is ...... 3, because when 3 is multiplied by itself we get 9. square root goes the other way: 3 squared is 9, so a square root of 9 is 3. A square root of a number is ... ... a value that can be multiplied by itself to give the original number. A square root of 9 is ... ... 3, because when 3 is multiplied by itself we get 9.