2 乘法 30 等于多少？

2 × 29 = 58 2 × 31 = 62 2 × 28 = 56 2 × 32 = 64 2 × 33 = 66 2 × 27 = 54 2 × 34 = 68 2 × 26 = 52 1 × 30 = 30 3 × 30 = 90 4 × 30 = 120 5 × 30 = 150 6 × 30 = 180 7 × 30 = 210 8 × 30 = 240 9 × 30 = 270 1 × 60 = 60 3 × 20 = 60 4 × 15 = 60 5 × 12 = 60 6 × 10 = 60 10 × 6 = 60 16 × 20 = 320 31 × 1 = 31 3 × 48 = 144 22 × 19 = 418 2 × 12 = 24 50 × 10 = 500 91 - 31 = 60 8 + 52 = 60