Blue series books - in what order?

Many people use Math Mammoth BLUE Series to help their children catch up if they are seriously behind. Some others use the Blue series as their main math curriculum.

The Blue series consists of TOPICAL books... so how does one use them in sequence? In what ORDER would they be used? The choice is yours, and lots of flexibility... but to help you get some idea of what goes where in regards to grade levels, this chart can help:

Study order for Math Mammoth Blue Series books

Keep in mind, the above link presents just a broad outline. The order of studying these books is not set in stone. :)