How to Calculate Quickly: Full Course in Speed Arithmetic

ISBN 13: 9780486202952

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Author Henry Sticker
Format Paperback
No. of Pages 192
Brand: Dover Publications

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Many useful procedures explained and taught: two-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful short cuts. More than 8,000 problems, with solutions. Reprint of 1945 edition.

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