发表于2024-11-29
Speed Mathematics Simplified 2024 pdf epub mobi 电子书
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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.
Speed Mathematics Simplified 2024 pdf epub mobi 电子书