Sites like Resh Skysmart provide step-by-step solutions for the Vilenkin 5th-grade textbook, including theoretical questions and "Checking Yourself" sections that often feature these puzzles.

Terms like "Sum," "Product," "Quotient," and "Remainder". Common 5th Grade Math Terms Found in Puzzles

Definitions for "Ray" (a line with a beginning but no end), "Vertex," and "Segment".

Scribd hosts various PDF versions and supplementary materials for the Vilenkin curriculum that may include scanned puzzle pages.