The Distributive Property of Multiplication

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The Distributive Property of Multiplication. Grade 4 GLE 17. Recall the distributive property of multiplication over addition . . . symbolically: a (b + c) = a b + a c and pictorially (rectangular array area model):. b. c. a. a b. a c. An example: 6 x 13 - PowerPoint PPT Presentation

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  • The Distributive Property of MultiplicationGrade 4 GLE 17

  • Recall the distributive property of multiplication over addition . . . symbolically:

    a (b + c) = a b + a cand pictorially (rectangular array area model):a ba cabc

  • An example: 6 x 13 using your mental math skills . . . symbolically:

    6 (10 + 3) = 6 10 + 6 3and pictorially (rectangular array area model):6 106 36103

  • What about 12 x 23? Mental math skills?

    (10+2)(20+3) = 1020 + 103 + 220 + 23

    10 2010 3102032 322 20