81 乘法 4 等于多少？

81 × 3 = 243 81 × 5 = 405 81 × 2 = 162 81 × 6 = 486 81 × 1 = 81 81 × 7 = 567 81 × 8 = 648 81 × 9 = 729 80 × 4 = 320 82 × 4 = 328 83 × 4 = 332 79 × 4 = 316 84 × 4 = 336 78 × 4 = 312 85 × 4 = 340 77 × 4 = 308 4 × 81 = 324 6 × 54 = 324 9 × 36 = 324 12 × 27 = 324 18 × 18 = 324 27 × 12 = 324 7 × 84 = 588 26 × 89 = 2314 35 × 36 = 1260 35 × 84 = 2940 20 × 72 = 1440 21 × 24 = 504 24 × 5 = 120 35 × 76 = 2660