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发表于2024-11-23
Speed Mathematics Simplified pdf epub mobi txt 電子書 下載 2024
Entertaining, easy-to-follow suggestions for developing greater speed and accuracy in doing mathematical calculations. Surefire methods for multiplying without carrying, dividing with half the pencil work of long division, plus advice on how to add and subtract rapidly, master fractions, work quickly with decimals, handle percentages, and much more.
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Speed Mathematics Simplified pdf epub mobi txt 電子書 下載 2024