This complementary text provides detailed solutions for the problems that appear in C.A.J. Fletcher's treatise Computational Techniques for Fluid Dynamics. The solutions are indicated in enough detail for the reader to complete any intermediate steps. Many of the problems require a computer program to be written, some of which are completely new; their listing forms part of the solution. Many problems are substantial enough to be considered mini-projects, and they should encourage the reader to explore extensions and further developments. Although targeted at instructors, the manual should be of considerable interest for mechanical engineers and fluid dynamicists.