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September 30, 2014

September 30, 2014

Posted by **MARKO** on Monday, September 26, 2011 at 7:42pm.

i know for 4 (10.2) i do this

= 4 (10 + 2)

= 4 (10) + 4 (2)

= 40. + .8

= 40.8

but I am not sure how to show work on on following 2 problems:

11.6 (9)

and 3.4 (5)

- algebra mental math distributive property -
**MathMate**, Monday, September 26, 2011 at 7:59pmThree ways you could do the multiplication mentally:

9(11.6)=9*10 + 9*1.6 = 90 + 14.4 = 104.4

9(11.6)=9*11 + 9*0.6 = 99 + 5.4 = 104.4

11.6(9)= 11.6*(10-1) =116 - 11.6 = 104.4

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