Following the Cuban Revolution, Baldor was forced into exile in the United States, living in Brooklyn and later Miami.
If you’re a student who wants to actually understand arithmetic (not just pass a test), download the PDF. If you’re an adult who forgot how to divide fractions, this is your redemption arc. And if you’re a parent… buy your kid the physical book. The PDF is great, but nothing builds character like the thud of a Baldor textbook hitting a desk at 7 AM. aritmetica baldor pdf