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Math Help - Help with questions please! :)

  1. #1
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    Help with questions please! :)

    Any smart people care to help me out with a couple of questions I am stuck on?

    1)
    Show three methods that could be used to calculate 26 x 12 without using formal multiplication algorithms. Explain which of these is most efficient and why.

    2)



    1. Use words or symbols to state the distributive law for multiplication over addition.



    2. Explain how the distributive law can be used to calculate 59 x 73 + 59 x 27 mentally.
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  2. #2
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    Re: Help with questions please! :)

    Quote Originally Posted by JDC182 View Post
    1)
    Show three methods that could be used to calculate 26 x 12 without using formal multiplication algorithms. Explain which of these is most efficient and why.
    26\times 12=26(10+2)=260+52=~?
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  3. #3
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    Re: Help with questions please! :)

    Hello, JDC182!

    2. Explain how the distributive law can be used to calculate 59 x 73 + 59 x 27 mentally.

    59\times73 + 59\times 27 \;=\; 59 \times (73 + 27) \;=\;59\times 100 \;=\;5900
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