20 乘法 4 等于多少？

20 × 3 = 60 20 × 5 = 100 20 × 2 = 40 20 × 6 = 120 20 × 1 = 20 20 × 7 = 140 20 × 8 = 160 20 × 9 = 180 19 × 4 = 76 21 × 4 = 84 22 × 4 = 88 18 × 4 = 72 23 × 4 = 92 17 × 4 = 68 24 × 4 = 96 16 × 4 = 64 1 × 80 = 80 2 × 40 = 80 4 × 20 = 80 5 × 16 = 80 8 × 10 = 80 10 × 8 = 80 1 × 95 = 95 86 × 96 = 8256 83 × 51 = 4233 54 × 95 = 5130 63 × 93 = 5859 98 × 66 = 6468 29 + 51 = 80 89 - 9 = 80