The really rough rule of thumb that I use is that what I pay for a property is equal to just putting that money in savings and drawing off of it for 30 years. (biggerpockets.com)
A very rough rule of thumb is 1 % of the value of the property as an annual flood insurance premium. (themultifamilyguy.com)
Using the very rough rule of thumb that a 10 - point change in NAEP scores equals about one year of learning, in 2011 our fourth graders are about two years ahead of where they were in 1992. (educationnext.org)