20 乘法 20 等于多少？

20 × 19 = 380 20 × 21 = 420 20 × 22 = 440 20 × 18 = 360 20 × 23 = 460 20 × 17 = 340 20 × 24 = 480 20 × 16 = 320 19 × 20 = 380 21 × 20 = 420 22 × 20 = 440 18 × 20 = 360 23 × 20 = 460 17 × 20 = 340 24 × 20 = 480 16 × 20 = 320 4 × 100 = 400 5 × 80 = 400 8 × 50 = 400 10 × 40 = 400 16 × 25 = 400 25 × 16 = 400 85 × 31 = 2635 45 × 76 = 3420 44 × 73 = 3212 11 × 72 = 792 25 × 25 = 625 1 × 65 = 65 5 × 18 = 90 3 × 28 = 84