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Mathematics 8 Online
OpenStudy (anonymous):

What is 9*8

OpenStudy (anonymous):

81-9

OpenStudy (twopointinfinity):

72 (: Try using your fingers. Look upo the trick

OpenStudy (anonymous):

9*9=81, so 81-9= the answer

OpenStudy (anonymous):

72

OpenStudy (anonymous):

That's too complicated Im going to use this trick with my fingers.

OpenStudy (anonymous):

9*8=72

OpenStudy (anonymous):

or you just do 10*8 then subtract what you are multiplying by 8 then u get 72. 9*5 10*5=50-5 is 45 and it makes u look smarter because you are doing it in your head.

OpenStudy (anonymous):

lol :)

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