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Direct linkArzt, Joshua; Gaze, Eric – Mathematics and Computer Education, 2004
Divisibility tests for digits other than 7 are well known and rely on the base 10 representation of numbers. For example, a natural number is divisible by 4 if the last 2 digits are divisible by 4 because 4 divides 10[sup k] for all k equal to or greater than 2. Divisibility tests for 7, while not nearly as well known, do exist and are also…
Descriptors: Number Concepts, Mathematics Education, Arithmetic, Number Systems
Peer reviewedAnderson, Oliver D. – Mathematics and Computer Education, 1989
Compares two methods of approaching problem solving in quantitative disciplines. The danger of looking at answers too quickly is discussed. (YP)
Descriptors: Arithmetic, College Mathematics, Computation, Computer Software
