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which of the following statements shows the halving and doubling strategy to find 28*50
a. 28*50=14*100
b. 28*50= (14*25)*(14*25)
c. 28*50= (20*50)+(8*50)
d. 28*50= 2*(14*25)

  • math -

    clearly a)

    you halved one factor and doubled the other.

    b) and d) are sheer nonsense
    c) is true but shows the distributive propery

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