2 乘法 45 等于多少？

2 × 44 = 88 2 × 46 = 92 2 × 47 = 94 2 × 43 = 86 2 × 48 = 96 2 × 42 = 84 2 × 49 = 98 2 × 41 = 82 1 × 45 = 45 3 × 45 = 135 4 × 45 = 180 5 × 45 = 225 6 × 45 = 270 7 × 45 = 315 8 × 45 = 360 9 × 45 = 405 1 × 90 = 90 3 × 30 = 90 5 × 18 = 90 6 × 15 = 90 9 × 10 = 90 10 × 9 = 90 40 × 18 = 720 53 × 46 = 2438 27 × 4 = 108 87 × 2 = 174 38 × 2 = 76 8 × 9 = 72 19 + 71 = 90 6 + 84 = 90