How to Calculate Quickly: Full Course in Speed Arithmetic

How to Calculate Quickly: Full Course in Speed Arithmetic

Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions. 1945 edition.

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Book Details  


Publisher: Dover Publications (March 18, 2013)

Parent ISBN: 9780486202952

Page count: 192 pages

Language: English


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