Concept explainers
Egyptian Multiplication TheRhind papyrus contains problems that show a doubling procedure used by the Egyptians to find the product of two whole numbers. The following examples illustrate this doubling procedure. In the examples, we have used Hindu-Arabic numerals so that you can concentrate on the doubling procedure and not be distracted by the Egyptian hieroglyphics. The first example determines the product
In the next example, we use the Egyptian doubling procedure to find the product of 35 and 94. Because the sum of 1, 2, and 32 is 35, we add only the blue numbers in the rows marked with a check to find that
Use the Egyptian doubling procedure to find each product.
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