Abstract
Suppose you have to do an addition, say 357 + 586. How much do you need to know in order to know the last digit of the answer? Would the last digit of each summand be enough? Suppose, instead, that it’s a subtraction problem? A multiplication problem? A division problem?
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© 1997 Springer Science+Business Media New York
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Hilton, P., Holton, D., Pedersen, J. (1997). A Far Nicer Arithmetic. In: Mathematical Reflections. Undergraduate Texts in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-1932-3_2
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DOI: https://doi.org/10.1007/978-1-4612-1932-3_2
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