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Fraction × Whole Number: Proof

Grade Four · Lesson 20 · 1:24 · Animated lesson with English narration

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A fraction B over C times C equals B. A fraction B over C equals B times one over C. The associative law: A times B times C equals A times B times C.

From lesson seventeen, A over C plus B over C equals A plus B over C. Three times two fifths equals three times two over five, equals six fifths. Two fifths. Six fifths.

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