10 乘法 21 等于多少？

10 × 20 = 200 10 × 22 = 220 10 × 19 = 190 10 × 23 = 230 10 × 24 = 240 10 × 18 = 180 10 × 25 = 250 10 × 17 = 170 11 × 21 = 231 9 × 21 = 189 12 × 21 = 252 8 × 21 = 168 13 × 21 = 273 7 × 21 = 147 14 × 21 = 294 6 × 21 = 126 3 × 70 = 210 5 × 42 = 210 6 × 35 = 210 7 × 30 = 210 14 × 15 = 210 15 × 14 = 210 21 × 84 = 1764 61 × 99 = 6039 13 × 68 = 884 9 × 71 = 639 88 × 33 = 2904 18 × 86 = 1548 50 × 34 = 1700 63 × 63 = 3969