How to Calculate Quickly: Full Course in Speed Arithmetic -Mantesh
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DescriptionQuote:How to Calculate Quickly - Full Course in Speed Arithmetic Publisher: Dover Publications Henry Sticker 1955 Language: English ISBN-10: 048620295X ISBN-13: 978-0486202952 192 pages 5.09 MB 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. Trackers
Torrent hash: A638588ACFAFCCEBB5BAA4A3892391B19CB814D7 |