Mental math in the primary grades
by Jack A. Hope, Jack Hope, Larry Leutizinger, Barbara J. Reys, Robert Reys
MathematicsProblems, exercisesMental arithmeticJuvenile literatureStudy and teaching (Elementary)Teaching Methods & Materials - MathematicsJuvenile NonfictionElementary
Writing a summary for young readers…
For young readers
Book data: Open Library