4 乘法 20 等于多少？

4 × 19 = 76 4 × 21 = 84 4 × 22 = 88 4 × 18 = 72 4 × 23 = 92 4 × 17 = 68 4 × 24 = 96 4 × 16 = 64 3 × 20 = 60 5 × 20 = 100 2 × 20 = 40 6 × 20 = 120 1 × 20 = 20 7 × 20 = 140 8 × 20 = 160 9 × 20 = 180 1 × 80 = 80 2 × 40 = 80 5 × 16 = 80 8 × 10 = 80 10 × 8 = 80 16 × 5 = 80 67 × 42 = 2814 82 × 70 = 5740 64 × 34 = 2176 64 × 70 = 4480 51 × 71 = 3621 42 × 93 = 3906 50 + 30 = 80 64 + 16 = 80