How can i memorize square roots 1-30? . i got the list from yahoo answers: . . 1² = 1. 2² = 4. 3² = 9. 4² = 16. 5² = 25. 6² = 36. 7² = 49. 8² = 64. 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. 26² = 676. 27² = 729. 28² = 784. 29² = 841. 30² = 900. . . but any ideas/ways on how i could memorize them? . i need to know them by monday.