3.OA.5.b
Associative property of multiplication: 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30.
Khan Academy ResourcesMore with multiplication and division: FAQUse associative property to multiply 2-digit numbers by 1-digitUnderstand associative property of multiplicationAssociative property of multiplicationProperties of multiplicationAssociative property of multiplicationProperties and patterns for multiplicationUsing associative property to simplify multiplication

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