Start with groups that have four digits in each one them : (3. 141)(5926)(5358)(9793)(2384)(6264)(3383), etc. You can also group the digits in such a way that they all have a pattern, like: (31415)(92)(6535)(8979)(323), etc.
Start by memorizing four groups of four digits each. You can work your way up to ten groups of four digits each, one at a time, slowly. Then double your recitations to five groups of eight digits each. It’ll be exactly the same number of digits, but you’ll be able to up your memorization by adding larger “sets. "
Giving them alphabetical names ensures that when you’ve memorized the first 260, you can start over and complete a whole “phone book. "
Also try using real names and associating real things with the name on the list, or even fake things about each person. The closer you can link the numbers to the list of names in your mind, the easier it will be to remember the numbers. You can also combine this technique with the major system and linking techniques discussed below.
A piem: Now I will a rhyme construct, / By letter count, the young instruct. / Cunningly devised endeavors, / Con it and remember ever. / Widths in circle here you see, / Sketched out in strange obscurity.
Lots of other memorization songs use the same technique: “If numbers had a heaven / their God would surely be / 3. 14159 / 26535. " The ABC tune, aka “Baa-Baa Black Sheep,” aka “Twinkle Twinkle Little Star”: 3 1 4 1 5 9 2 / 6 5 3 5 8 9 / 7 9 3 2 3 8 4 / 6 2 6 4 3 3 8 / 3 2 7 9 5 0 2 / 8 8 4 1 9 7 1 Try writing your own song or rhyme to help yourself remember.