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Question Video: Applying the Commutative Property of Multiplication Mathematics • 3rd Grade

Complete: 8 × 5 = 5 × _.


Video Transcript

Complete: eight times five equals five times what.

We have to find the missing number in this equation. Because there’s an equal sign in the middle, we know that eight times five is equal to five multiplied by our missing number. This array shows eight rows of five counters. Let’s count in fives to find the total number of counters. Five, 10, 15, 20, 25, 30, 35, 40. So we know that eight times five is 40. And if we turn our array the other way round to show five rows of eight, then the product will be the same. Eight rows of five are 40, and five rows of eight are 40. The missing number is eight. We know that we can multiply eight and five in any order; the product will still be 40. Eight times five is equal to five times eight.

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