Why a negative times a negative makes sense
6:14
Why a negative times a negative makes sense
Dec 22, 2012
Khan AcademySal Khan
Negative times Negative: A Deep Dive into Understanding It
Negative times Negative: A Deep Dive into Understanding It
1K viewsFeb 5, 2024
substack.com
Everyone memorizes that “a negative times a negative equals a positive” — but few people actually understand why. In this video, we’ll use patterns and the distributive property to prove this rule visually on the lightboard! You’ll see how number patterns naturally lead to this result — no memorization, just logic and math beauty. Perfect for middle school, Algebra 1, or SAT prep students who want to deeply understand signed number operations. Drop a comment if this visual made the concept click
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