Learn your times tables. :)
65 feet per second is equal to 42.34 mph (71.32 kph).
Association
pick out unusual stuff about them.
All you need to do is memorize the songs and then start practicing it and soon enough you can rap it fast!
Jose Reyes can run 6.2 seconds in the sixty yard
4.1 
About sixty with the regular size tires.
7.9 seconds
Fast Second was created in 2005.
sixty miles per hour.
Just read the names and symbols 3 times a day for at least 3 days.
The only way to memorize the times table is by doing it over and over until you can do it in under a minute without looking - that's probably going to take you more than a day, but if you get started, you can see how fast you can learn it! Have someone write out a bunch of sample problems and see how fast you can do them.