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THE QUESTION BOX
1. What did Titus and Caius use to help them divide one number by another?
2. Why was the first method of dividing used by Filippo called the scratch, or galley, method?
3. How did Filippo's second method of dividing differ from the one that we use?
4. How did Filippo prove that his work in division was correct?
5. In whose book is to be found the first printed example in long division, substantially by our method?
6. Count the number of figures used by Adriaen and Michael in the galley method of dividing 1728 by 12, and
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then count the number used by us in our method. Then compare the space required in the two cases. Can you see why the world refused so long to use our method?
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