18 x 1 = 18 18 x 2 = 36 18 x 3 = 54 18 x 4 = 72 18 x 5 = 90 18 x 6 = 108 18 x 7 = 126 18 x 8 = 144 18 x 9 = 162 18 x 10 = 180 18 x 11 = 198 18 x 12 = 216 18 x 13 = 234 18 x 14 = 252 18 x 15 = 270 18 x 16 = 288 18 x 17 = 306 18 x 18 = 324 18 x 19 = 342