Growth in Arithmetic, grade 6 hardcover.  Copyright 1952 and 1956 (revised edition).
By World Book Company, Yonkers-on-Hudson NY.
This is an “old school” textbook — no frills, no tricks, no “new Math.”
Just explanations and problems.  LOTS of problems.
Perfect for homeschooling, or for reinforcing basic concepts at home.
Condition:  covers are worn with some stains and scribbles. Interior pages are excellent; no rips, chips, scribbles, answers written in, grubbiness.  Bright, tight block, no missing pages.
Front endpapers are messy with names of previous students. 
See photos.
Will be sent Media mail, respectfully packaged.