An Exce-L-ent Algorithm for Factors and Multiples
Jae Ki Lee, Kyong Mi Choi, and Melissa McAninch
November 2012, Volume 18, Issue 4, Page 236
The L-shaped 2-5-3-7 algorithm, combining efficient Singaporean and Korean procedures with divisibility rules of primes 2, 3, 5, and 7, helps students identify LCMs and GCFs.
Multiplication and Division