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2

Mental Addition and Subtraction

Lecture no. 2 from the course: The Secrets of Mental Math

Mental Addition and Subtraction

Taught by Professor Arthur T. Benjamin | 31 min | Categories: The Great Courses Plus Online Mathematics Courses

Professor Benjamin demonstrates how easily you can mentally add and subtract one-, two-, and three-digit numbers. He also shows you shortcuts using the complement of a number (its distance from 100 or 1000) and demonstrates the uses of mental addition and subtraction for quickly counting calories and making change.

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m********m
April 21, 2017
5 star

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g********m
August 30, 2016

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w********u
August 12, 2016
Very useful information

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