Important Squares and their square root.
THE STUDENT MUST MEMORISE THIS BY TONGUE.
| 42 = 16 | 112 = 121 |
| 52 = 25 | √(25)=5 |
| 62 = 36 | √(36)= 6 |
| 72 = 49 | √(49 ) = 7 |
| 82 = 64 | √(64)= 8 |
| 92 = 81 | √(81)= 9 |
| 102 = 100 | √(100) = 10 |
| 112 = 121 | √(121) = 11 |
| 122 = 144 | √(144 ) = 12 |
| 132 = 169 | √(169 ) = 13 |
| 142 = 196 | √(196 ) = 14 |
| 152 = 225 | √(225 ) = 15 |
| 162 = 256 | √(256 ) = 16 |
| 172 = 289 | √(289 ) = 17 |
| 202 = 400 | √(400 ) = 20 |
| 252 = 625 | √(625 ) = 25 |
