Multiplying 3-digit by 2-digit: comparing standard algorithm to partial products | Khan Academy

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https://www.khanacademy.org/math/5th-grade-illustrative-mathematics/xe7a2395079b692f7:wrapping-up-multiplication-and-division-with-multi-digit-numbers/xe7a2395079b692f7:standard-algorithm-multi-digit-numbers-without-composing/v/multiplying-3-digit-by-2-digit-comparing-standard-algorithm-to-partial-products

A worked example that shows how to use the standard algorithm to multiply a 3-digit number by a 2-digit number, without composing new units.

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