How to Calculate Quickly
English

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Piracy-free
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Assured Quality
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Secure Transactions
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Fast Delivery
Sustainably Printed
Sustainably Printed
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Easy Returns
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About The Book

Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions.