五上笔算乘法50题.doc

五年级上册笔算乘法练习要求：先估算，将估算结果写在算式上方，再计算并验算。（提示：部分习题可应用积不变规律列竖式计算）6.5871.5 10.5690.6 0.1257453 0.60823.7 30800.914 6.7244.68756.34.86 0.54631.28 40.0760.65 9800037.65 0.18563.14 0.80775.80.5737680 7.693.009 36000.6458 6.280.875 7.1680.0839 607.80.54628.3657.09 6.2898.75 8640.2787 301.256400 0.86562800 157076.5469.5735.8 5.60940.08 14.658.97 6.3820.9647 500.287.036 0.6020.073946.58.875 408000.0635 42.690.84 0.8477.128 7.19438.6 0.8000539.260.077626.25 293.40.637 1.88435.01 78.3400.26 0.5089.865 5.944.0605638200.0475 0.827394.2 40.08660.55 0.263770.8 0.6859050.6 83.05942003.6270.0839 68.936527.564