21 乘法 70 等于多少？

21 × 69 = 1449 21 × 71 = 1491 21 × 68 = 1428 21 × 72 = 1512 21 × 67 = 1407 21 × 73 = 1533 21 × 74 = 1554 21 × 66 = 1386 20 × 70 = 1400 22 × 70 = 1540 19 × 70 = 1330 23 × 70 = 1610 24 × 70 = 1680 18 × 70 = 1260 25 × 70 = 1750 17 × 70 = 1190 15 × 98 = 1470 30 × 49 = 1470 35 × 42 = 1470 42 × 35 = 1470 49 × 30 = 1470 70 × 21 = 1470 42 × 12 = 504 1 × 43 = 43 81 × 56 = 4536 90 × 25 = 2250 83 × 51 = 4233 79 × 73 = 5767 88 × 41 = 3608 34 × 84 = 2856