2 乘法 20 等于多少？

2 × 19 = 38 2 × 21 = 42 2 × 22 = 44 2 × 18 = 36 2 × 23 = 46 2 × 17 = 34 2 × 24 = 48 2 × 16 = 32 1 × 20 = 20 3 × 20 = 60 4 × 20 = 80 5 × 20 = 100 6 × 20 = 120 7 × 20 = 140 8 × 20 = 160 9 × 20 = 180 1 × 40 = 40 4 × 10 = 40 5 × 8 = 40 8 × 5 = 40 10 × 4 = 40 20 × 2 = 40 37 × 51 = 1887 83 × 7 = 581 40 × 94 = 3760 61 × 32 = 1952 67 × 60 = 4020 45 × 59 = 2655 22 + 18 = 40 31 + 9 = 40