小数乘法计算题.doc

五年级小数乘法计算过关练习题 1、列竖式计算下面各题。7.62 0.238.9 2.890.8 4.80.25 1250.08 7.372.6967.3 3.1416 0.375.62.612 3.1425 6.690.3 363.14 5.430.9 0.472 0.725= 2.054= 12.47=2.312= 6.70.3= 0.560.04= 6.58.4= 3.74.6= 0.290.07=2.61.08= 0.877= 12.542= 0.370.4= 1.0625= 0.60.39=1.70.45= 5.21.4= 0.378.4=0.861.2= 2.040.15= 212.84= 6.825= 581.6= 362.4=2.063.7= 1.560.08= 1.035.3= 1.121.1= 1.51.5= 3.142.5=3.142= 3.143= 3.144=3.145= 3.146= 3.147= 3.148= 3.149= 3.540.6= 3.140.8= 0.250.4= 1.2580= 0.1423= 3.54.8= 2.2580= 8.160.4= 12.50.8= 350.57= 13.70.06= 5.040.29= 3.529.6= 6.90.15= 2.580= 0.125800= 140.25= 3.141.8= 2.1570= 1.862.4= 0.150.63= 2.752.2= 12.80.3= 0.892.9= 1.20.16= 6.159.4= 1.80.85= 13.740= 2、用简便方法计算下面各题。0.3 63 99.7 63 1.2 31 98.8 31 6.1 68 93.9 68 4 4.8 61 95.2 61 4.9 45 95.1 45 4.4 20 95.6 20 1.5 24 98.5 24 7 82 93 82 8.8 27 91.2 27 6.8 8 93.2 85.498.694.09 9.335.935.23 257.14 12.9254 12.50.698350.20.5 0.75500.4 1.285.9380254.4 8.81.25 10.15.69.92.6 1.51.6 0.253.61.6 6798.4 67 0.18.20.28.29.7 8.2 1.25320.4 4.80.25 0.78980.52.338 1.5105 0.3 2.5 0.41.2 2.5+0.8 2.5 3.72 99+3.72 9.98 9.91.25 0.9 0.8 4 （6.32.5） 6.40.2512.52.516.7-2.50.7 1.089+1.08 0.391993.140.68+31.40.032 1.288.6+7.20.869.161.53-0.05391.6 480.56+440.483、计算下面各题，并按要求保留积的小数位数。（1）得数保留一位小数0.60.9 0.570.86 0.80.313.582 0.5630.856 0.372.4（2）得数保留两位小数35.60.50