51 乘法 20 等于多少？

51 × 19 = 969 51 × 21 = 1071 51 × 22 = 1122 51 × 18 = 918 51 × 23 = 1173 51 × 17 = 867 51 × 24 = 1224 51 × 16 = 816 50 × 20 = 1000 52 × 20 = 1040 49 × 20 = 980 53 × 20 = 1060 48 × 20 = 960 54 × 20 = 1080 47 × 20 = 940 55 × 20 = 1100 12 × 85 = 1020 15 × 68 = 1020 17 × 60 = 1020 20 × 51 = 1020 30 × 34 = 1020 34 × 30 = 1020 100 × 95 = 9500 7 × 97 = 679 99 × 11 = 1089 8 × 31 = 248 7 × 71 = 497 61 × 47 = 2867 80 × 15 = 1200 11 × 87 = 957