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 20 × 49 = 980 8 × 72 = 576 97 × 57 = 5529 66 × 16 = 1056 2 × 98 = 196 96 × 42 = 4032 46 - 6 = 40 53 - 13 = 40