document.write( "Question 101849: what if i forgot the value of 8 times 7 how cold i use the distributive propertyto find 8 times seven \n" ); document.write( "
Algebra.Com's Answer #74043 by Fombitz(32388) You can put this solution on YOUR website! Let's review the distributive property. \n" ); document.write( "A*(B+C) = A*B + A*C \n" ); document.write( "So how does that apply to 8*7? \n" ); document.write( "8*(7)=8*(6+1)=8*(5+2)=8*(4+3) \n" ); document.write( "So all of these sums should be the same. Let's check. We'll work backwards. \n" ); document.write( "8*(4+3) = 8*4 + 8*3 = 32 + 24 = 56 \n" ); document.write( "8*(5+2) = 8*5 + 8*2 = 40 + 16 = 56 \n" ); document.write( "8*(6+1) = 8*6 + 8*1 = 48 + 8 = 56 \n" ); document.write( "So then 8*7 = 56 \n" ); document.write( "Eventually you could get down to \n" ); document.write( "8*7 = 8*1 + 8*1 + 8*1 + 8*1 + 8*1 + 8*1 + 8*1 + 8*1 or 8 added 7 times or (8 times 7) and that would still equal 56. \n" ); document.write( "Multiplication is just quicker addition. \n" ); document.write( " |