Only 10% of Students Can Explain Why −5 × −4 = 20 | Why is negative times negative positive?

Think you understand negative numbers? Most students know that −5 × −4 = 20, but far fewer can explain why a negative multiplied by a negative becomes positive. In this video, I break it down step by step using simple mathematical reasoning so you understand the rule instead of just memorizing it. Perfect for students learning integers, algebra, negative numbers, multiplication rules, and foundational mathematics. Can you explain it before watching the solution? #Math #Algebra #MathChallenge #NegativeNumbers #MathExplained