How to Calculate Quickly - Full Course in Speed Arithmetic

Size 5.339 MB   13 seeders     Added 2013-02-10 08:31:24

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How to Calculate Quickly
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.
How to Calculate Quickly - Full Course in Speed Arithmetic.pdf 5.339 MB
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