Some people think that memorizing squares is a waste of time because there are easy methods to finding the squares of numbers. However, I believe that by memorizing the squares, at least through 25, you will have a distinct advantage over those who do not.
Therefore, I believe the following squares are essential:
|
12
= 1 |
22
= 4 |
32
= 9 |
42
= 16 |
52
= 25 |
|
62
= 36 |
72
= 49 |
82
= 63 |
92
= 81 |
102
= 100 |
|
112
= 121 |
122
= 144 |
132
= 169 |
142
= 196 |
152
= 225 |
|
162
= 256 |
172
= 289 |
182
= 324 |
192
= 361 |
202
= 400 |
|
212
= 441 |
222
= 484 |
232
= 529 |
242
= 576 |
252
= 625 |
*Note: I found it helpful to memorize through 30, but 25 should be efficient.