81 乘法 99 等于多少？

81 × 98 = 7938 81 × 100 = 8100 81 × 97 = 7857 81 × 96 = 7776 81 × 95 = 7695 81 × 94 = 7614 81 × 93 = 7533 81 × 92 = 7452 80 × 99 = 7920 82 × 99 = 8118 83 × 99 = 8217 79 × 99 = 7821 84 × 99 = 8316 78 × 99 = 7722 85 × 99 = 8415 77 × 99 = 7623 99 × 81 = 8019 5 × 20 = 100 26 × 73 = 1898 92 × 90 = 8280 16 × 71 = 1136 71 × 29 = 2059 12 × 76 = 912 69 × 47 = 3243 16 × 23 = 368 69 × 29 = 2001 32 × 66 = 2112 41 × 67 = 2747 36 × 42 = 1512