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A Method for 4 × 4 Digit Mental Multiplications (21 April 2006)

Developing a “Number Sense” through Mental Multiplication (6 November 2006)

Fast Approximation of the Tangent, Hyperbolic Tangent, Exponential and Logarithmic Functions (27 June 2007)

The McIntosh–Doerfler Algorithm for Exponentials (17 June 2021)