Need Totals in "child" Tables/Sheets linked into "parent" Table/Sheet.

Say I have a "parent" sheet with several Tables on it and need to create "child" sheets with tables that perform the same calculation function as the "parent". In the "parent" tables, I need the totals of the respective "child" tables. Dependency is inverse from that of life, in that typically a child is dependent on the parent. In this particular aspect, the parent is dependent on the child (sort of like how an octagenerian may be dependent on their children).

Simplified example attached....