Practical arithmetic
By: by W. M. Spangler.
Contributors: Horan, Edward, 1942-; International Correspondence Schools.
Edition: Ed. 3.
Publisher: International Correspondence Schools
Published: 1977
Place of publication: Scranton, Pa
Language: eng
Subjects: Arithmetic.
Notes: "2750   ."
Pt. 4 rev. by E. Horan.
Table of contents: title: pt. 1. Whole numbers.; title: pt. 4. Speeding up and checking calculations, powers, roots, and number systems.