18 乘法 1 等于多少？

18 × 2 = 36 18 × 3 = 54 18 × 4 = 72 18 × 5 = 90 18 × 6 = 108 18 × 7 = 126 18 × 8 = 144 18 × 9 = 162 17 × 1 = 17 19 × 1 = 19 20 × 1 = 20 16 × 1 = 16 21 × 1 = 21 15 × 1 = 15 22 × 1 = 22 14 × 1 = 14 1 × 18 = 18 2 × 9 = 18 3 × 6 = 18 6 × 3 = 18 9 × 2 = 18 6 × 23 = 138 78 × 87 = 6786 8 × 2 = 16 20 × 67 = 1340 8 × 95 = 760 83 × 75 = 6225 22 - 4 = 18 56 - 38 = 18 60 - 42 = 18