How to Calculate Quickly: Full Course in Speed Arithmetic
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Book Details
Author(s)
Sticker, Henry
Publisher
Snowball Publishing
ISBN / ASIN
1607964201
ISBN-13
9781607964209
Marketplace
France 🇫🇷
Description
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.
