MODERN JUNIOR MATHEMATICS: BOOKS ONE, TWO & THREE: Full 3-Volume Set of 1990

New York, NY: The Gregg Publishing Co, 1920. First Edition . Hard Cover/3 Volume Set. Collectible - Very Good/None as Issued?. Classic,full 3-volume Set. 1920 First Edition, Gregg Publishing Co, New York. Physical decrription for all 3 books: A) ,Text/Bright & Near New .B) ,Beige linen boards/VG; strong & sound w/edge rubs & surface wear. C), DJ/None (as Issued?. And D), PO name (same) stamped to fEP. Highschool mathematics textbooks; systematic coverage of business applications, geomentry and algebra. BOOK ONE (7th grade text). 222 pgs in 4 chapters: 1, Accurate Rapid Calculation; 2, Everyday Arithmetic in Business;, and 4, Tests of Acheivement. BOOK TWO (8th grade text), 239 pgs in 14 chapters. 1, Form & Measurement; 2, Surfaces of Common Solids; 3, A Study of Triangles; 4, Constructions; 5, Further Study of Triangles; 6, Parallel Lines; 7, Quadrilaterals; 8, Measured & Unmeasured Lines; 9, Review Problems; 10, Similar Figures; 11, Polygons; 12, Cylinders & Circles; 13, Volumes; and 14, Review of Formulas. And BOOK THREE (9th grade text), 246 pgs, in 14 chapters: 1, A New Kind of Number; 2, Meaning of Algebraic Numbers; 3, The Equation; 4, Subtraction & Division; 5, Equation w/Parentheses; 6, Fractions; 7, Multiplication & Divsion of Fractions; 8, Simple Equations w/Two Unknowns; 9, Quadratic Equations w/One Unknown; 10, Quadratic Equations w/Two Unknowns; 11, Ratios in Right Triangles; 12, New Uses of Exponents; 13, Test of Acheivement; and 14, Geometry.