Stop Counting On Your Fingers, Forever! - Sea, Dave
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Using a series of exercises that will train you to add and subtract single-digit numbers in your head, without using your fingers. With easy to understand and learn exercises and by using humor and a direct-conversation style, it keeps you relaxed with low to non-existent stress levels, and a slight comic-relief so you don't get bored.

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Produktbeschreibung
Using a series of exercises that will train you to add and subtract single-digit numbers in your head, without using your fingers. With easy to understand and learn exercises and by using humor and a direct-conversation style, it keeps you relaxed with low to non-existent stress levels, and a slight comic-relief so you don't get bored.
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