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 59 × 65 = 3835 33 × 86 = 2838 5 × 9 = 45 82 × 97 = 7954 85 × 70 = 5950 5 × 88 = 440 79 - 61 = 18 98 - 80 = 18 99 - 81 = 18