1 乘法 40 等于多少？

1 × 39 = 39 1 × 41 = 41 1 × 38 = 38 1 × 42 = 42 1 × 37 = 37 1 × 43 = 43 1 × 44 = 44 1 × 36 = 36 2 × 40 = 80 3 × 40 = 120 4 × 40 = 160 5 × 40 = 200 6 × 40 = 240 7 × 40 = 280 8 × 40 = 320 9 × 40 = 360 2 × 20 = 40 4 × 10 = 40 5 × 8 = 40 8 × 5 = 40 10 × 4 = 40 20 × 2 = 40 64 × 61 = 3904 28 × 82 = 2296 35 × 51 = 1785 72 × 48 = 3456 42 × 77 = 3234 16 × 41 = 656 83 - 43 = 40 32 + 8 = 40