1 乘法 9 等于多少？

1 × 8 = 8 1 × 10 = 10 1 × 11 = 11 1 × 7 = 7 1 × 12 = 12 1 × 6 = 6 1 × 13 = 13 1 × 5 = 5 2 × 9 = 18 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 7 × 9 = 63 8 × 9 = 72 9 × 9 = 81 3 × 3 = 9 9 × 1 = 9 4 × 1 = 4 1 × 3 = 3 2 × 2 = 4 8 × 1 = 8 4 × 2 = 8 71 - 62 = 9 51 - 42 = 9 63 - 54 = 9 16 - 7 = 9 19 × 58 = 1102 4 × 90 = 360 70 × 19 = 1330