五年级数学小数练习题.doc
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1、小数乘除法计算题乘法:5.62.9=3.771.8=0.0296=5.220.3=9.990.02=4.670.9=52.44=1.6666.1=9.4320.002=5.66.5=4.882.9=5.614.3=8.92.4=5.555=9.770.02=1.3845.1=8.7883=2.661=0.0590.2=4.2681.7=(保留三位小数)2.50.7 (保留两位小数)0.120.50.16 (商用循环小数)10.13.3 0.80.9 (用乘法验算)51.30.27= 10.7512.5= (用除法验算)1.54.9=3.259.04= 3、脱式计算(能简算的要简算)2.57.1
2、4 16.129916.12 5.20.90.97.2899+7.28 4.3500.2 642.640.52615.7+15.724 (2.275 0.625)0.28 3.94+34.30.2575.7=9.462.85=17.86.4=1.54.9=2.50.88=5.5555.2=2.223.33=7.65885=36.020.3=56.788=15.613=0.1815= 0.02514= 3.0636=0.040.123.842.6= 5.7634.80.25 0.1251.4=0.250.046 = 2.523.4= 1.0825=1.2(9.62.4)4.8.91.14.7 2
3、.75.43.9 3.69.85-5.46 8.053.4+7.6 6.584.50.9 2.80.5+1.58324.90.9 4.84.80.5 (1.250.125)84.8100.1 56.59956.5 7.0910.80.87.094.85 + 0.35 1.4 8.7 17.4 -8.77.412.50.42.58 0.873.16+4.64 9.5101 0.68 (5.2 -3.5)1.25 40.5 0.81 0.18 12.58.8 除法:85.4416=42.847=101.79=67.515=230.46=21.2436=0.73623=43.512=35.217=3
4、9.624=76.45.4=4.73=1.251.2=3242=14.362.7=8.336.2=1.70.03=2.410.7=0.3961.2=0.7560.36= 0.80.9= 4.8 (15 2.4)6.81+6.8199 0.2518540 4.40.83.40.80.4X9.37X 25 2.376.3+2.373.7 2.51.250.32 3.810.12.5(3.80.04) 7.69101 0.2539+0.25 0.12572 460.33+540.33(85.27) 1.25 6.81+6.8199 0.25185406.80.750.5 3.750.1252.75
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