Math: What Every 5th Grader Should Know (21 of 25) Ch 3: How to Square 2-Digit Number Ending in 1

479 views · Published 14 January 2016 · 3:32 · Indexed 14 November 2026

Channel: Michel van Biezen · 2016 · Education

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In this video I will explain the rules and tricks of squaring numbers (ending in “1”) quickly “in your head.”

Next video in this series can be seen at:
https://youtu.be/b-MlWhVSEic

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