Key to the New normal mental arithmetic, and, Methods of teaching mental arithmetic
Subtitle: containing, also, methods for arithmetical contractions and a collection of problems of an interesting and amusing character, for class exercises
By: by Edward Brooks.
Contributors: Brooks, Edward, 1831-1912.
Publisher: Sower, Potts & Co.
Published: 1873
Place of publication: Philadelphia
Language: eng
Number of pages: 160
Subjects: Mental arithmetic.
Other titles: Methods of teaching mental arithmetic.