40 乘法 2 等于多少？

40 × 1 = 40 40 × 3 = 120 40 × 4 = 160 40 × 5 = 200 40 × 6 = 240 40 × 7 = 280 40 × 8 = 320 40 × 9 = 360 39 × 2 = 78 41 × 2 = 82 38 × 2 = 76 42 × 2 = 84 37 × 2 = 74 43 × 2 = 86 44 × 2 = 88 36 × 2 = 72 1 × 80 = 80 2 × 40 = 80 4 × 20 = 80 5 × 16 = 80 8 × 10 = 80 10 × 8 = 80 74 × 21 = 1554 16 × 87 = 1392 35 × 24 = 840 8 × 25 = 200 28 × 93 = 2604 64 × 54 = 3456 25 + 55 = 80 98 - 18 = 80