Schnellere Mathematik: Tricks und Tipps: 30 Tage bis zur Beherrschung der Zahlen von Edward H. Julius
25,77 €
Math skills you can count on! And have fun while doingit! Discover how you canquickly subtract by oversubtracting. Speed up your calculating withplace-value multiplication. See how to add in seconds by breaking anumber apart.
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