21 乘法 3 等于多少？

21 × 2 = 42 21 × 4 = 84 21 × 1 = 21 21 × 5 = 105 21 × 6 = 126 21 × 7 = 147 21 × 8 = 168 21 × 9 = 189 20 × 3 = 60 22 × 3 = 66 19 × 3 = 57 23 × 3 = 69 24 × 3 = 72 18 × 3 = 54 25 × 3 = 75 17 × 3 = 51 1 × 63 = 63 3 × 21 = 63 7 × 9 = 63 9 × 7 = 63 63 × 1 = 63 65 × 68 = 4420 67 × 16 = 1072 31 × 26 = 806 51 × 3 = 153 18 × 20 = 360 28 × 22 = 616 41 + 22 = 63 97 - 34 = 63 12 + 51 = 63