+8 +8 +8 +8 +8 +8 +8 +8 +8 8 -8 -8 -8 -8 -8 -8 -8 -8 -8 80 8 x 1= 8 x 10= 8 x 2= 8 x 9= 8 x 3= 8 x 8= 8 x 4= 8 x 7= 8 x 5= 8 x 6= 8 x 6= 8 x 5= 8 x 7= 8 x 4= 8 x 8= 8 x 3= 8 x 9= 8 x 2= 8 x 10= 8 x 1= -77-