Depending on your age, you’ll remember the traditional, straight forward method (algorithm) of doing a three-digit subtraction calculation, like 352 – 164, to arrive at the correct answer of 188. That ...

Subtract within 1000 using various representations, strategies, and algorithms. Warm up with a Mystery Math Mistake to find a mistake made in using an algorithm for addition and subtraction. Subtract ...

Publications of the Astronomical Society of the Pacific, Vol. 126, No. 936 (February 2014), pp. 170-179 (10 pages) AbstractWe present a fast and portable reimplementation of Piskunov and Valenti’s ...