3.14乘1至50的積如下所示：1 x 3.14 = 3.14 2 x 3.14 = 6.28 3 x 3.14 = 9.42 4 x 3.14 = 12.56 5 x 3.14 = 15.7 6 x 3.14 = 18.84 7 x 3.14 = 21.98 8 x 3.14 = 25.12 9 x 3.14 = 28.26 10 x 3.14 = 31.4 11 x 3.14 = 34.54 12 x 3.14 = 37.68 13 x 3.14 = 40.82 14 x 3.14 = 43.96 15 x 3.14 = 47.1 16 x 3.14 = 50.24 17 x 3.14 = 53.38 18 x 3.14 = 56.52 19 x 3.14 = 59.66 20 x 3.14 = 62.8 21 x 3.14 = 65.94 22 x 3.14 = 69.08 23 x 3.14 = 72.22 24 x 3.14 = 75.36 25 x 3.14 = 78.5 26 x 3.14 = 81.64 27 x 3.14 = 84.78 28 x 3.14 = 87.92 29 x 3.14 = 91.06 30 x 3.14 = 94.2 31 x 3.14 = 97.34 32 x 3.14 = 100.48 33 x 3.14 = 103.62 34 x 3.14 = 106.76 35 x 3.14 = 109.9 36 x 3.14 = 113.04 37 x 3.14 = 116.18 38 x 3.14 = 119.32 39 x 3.14 = 122.46 40 x 3.14 = 125.6 41 x 3.14 = 128.74 42 x 3.14 = 131.88 43 x 3.14 = 135.02 44 x 3.14 = 138.16 45 x 3.14 = 141.3 46 x 3.14 = 144.44 47 x 3.14 = 147.58 48 x 3.14 = 150.72 49 x 3.14 = 153.86 50 x 3.14 = 157 擴充套件資料：乘法運算定律1、整數的乘法運算滿足：交換律，結合律， 分配律，消去律。2、隨著數學的發展， 運算的物件從整數發展為更一般群。群中的乘法運算不再要求滿足交換律。 最有名的非交換例子，就是哈密爾頓發現的四元數群。 但是結合律仍然滿足。