五年级小数竖式计算.doc

.68.84 85.4416 67.515 289.918 101.79 243.264 16.828 15.6240.13815 1.3527 0.41632 3.645291.23.8 0.7560.18 51.30.27 260.132101.4 2.6880.56 10.62525 126451025 2.77.5 150.06 25.60.03214.362.7 8.336.2 1.70.03 32421.251.2 2.410.7 4.50.07= 6.30.09= 2.53.6= 19.83.3= 50.25= 0.760.4= 2.360.22= 2.84.58= 3.574.2= 82.836= 452.46= 3.60.24= 382.545= 6.45.48= 13.424.73 = 9.658.12 = 7.231.2 = 6.312 = 2.148.3 = 4.91.12 = 21.982.31 = 0.2428.37 = 29.133.14 = 9.8811.21 = 5.511 = 7.50.5 = 61.2 = 3.28 = 7.20.9 = 241.2 = 120.12 = 6.750.25 = 120.75 = 210.7 = 16.90.13= 1.553.9= 3.70.016= 5.636.1= 0.30.15= 0.50.12= 0.630.63= 1.45= 0.10.01= 0.358= 7.357= 10.01= 4.6922.3= 5.52.02= 3.140.68= 3.071.5= 5.261.6= 0.856.3= 52.60.252= 3573= 4、判断。（1）如果两个因数的积不是小数，那么这两个因数一定不是小数。（ ）（2）一个不等于0的数的1.02倍一定比原数大。 （ ）（3）因为1235=420，所以1.23.5=42.（ ）（4）在表示近似数时，5.0也可以写成5。（ ）（5）整数乘法的交换律、结合律和分配律，对于小数乘法同样适用。（ ）（6）0.259.9=0.25（10-1）=0.2510-0.25。（ ）（7）4.10与4.1大小相等，表示意义也相同。（ ）（8）3.994精确到百分位约是4.00.（ ）（9）一个数（0除外）除以小数，商一定比这个数大。（ ）（10）两个数相除的商是0.9，被除数不变，除数扩大10倍，商是9.（ ）5、把下列各式中的乘积点上小数点，使等式成立。 9.362.7=25272 0.896.43=57227 52.11.98=103158 26.153.4=88914.50.07= 6.30.09= 2.53.6= 19.83.3= 50.25= 0.760.4= 2.360.22= 2.84.58= 3.574.2= 82.836= 452.46= 3.60.24= 382.545= 6.45.48= 13.424.73 = 9.658.12 = 7.231.2 = 6.312 = 2.148.3 = 4.91.12 = 21.982.31 = 0.2428.37 = 29.133.14 = 9.8811.21 = 92040= 78060= 96040= 7997= 2832 5425 4861 2337= 4658= 32652= 4512 3312= 3269= 0.828 36 97.2 24 7.65 0.85 12.6 0.28 8.61 2.1 58.75 0.25 220.3 0.7 58.8 0.28 58.9 31 7.67 5.9 83.2 3.2 97.2 5.4 8.424 1848 23184 7.6525 0.9835 2.52525 8456 140.73 8 2.872 1.562.4= 1.440.015= 2.8980.18= 85.4416 42.847 101.79 67.515 230.46 21.2436 0.73623 43.512 35.217 39.624 6.210.0385.4416 42.847 101.79 67.515 230.46 21.2436 0.73623 43.512 35.217 39.624 6.210.03 2101.4 51.30.27 91.23.8 0.7560.18 0.660.3 11.971.5 69.62.9 38.40.8 150.06 0.828 36 97.2 24 7.65 0.85 12.6 0.28 8.61 2.1 58.75 0.25 220.3 0.7 58.8 0.28 58.9 31 7.67 5.9 83.2 3.2 97.2 5.4 8.424 1848 23184 7.6525 0.9835 2.52525 8456 140.73 82.872 1.562.4= 1.440.015= 2.8980.18= 85.4416 42.847 101.79 67.515 230.46 21.2436 0.73623 43.512 35.217 39.624 6.210.03 85.4416 42.847101.79 67.515 230.46 21.2436 0.73623 43.512 35.217 39.624 6.210.03 2101.4 51.30.27 91.23.8 0.7560.18 0.660.3 11.971.5 69.62.9 38.40.8 150.06 1.440.015= 2.8980.18= 1.440.015= 2.8980.18= 0.3288= 3.513= 7.217= 2325= 3.6414= 37.828= 60050= 420.16= 840.25= 0.360.9= 2.43= 200.5= 0.86= 10000.09= 1.3527= 580.32= 1.0852= 8.50.54= 5.622.4= 0.280.16= 1.060.82= 0.060.75= 0.412.01= 0.630.12= 3.52.01 1.260.84=1.456.5+0.556.5 6.1299+6.12 5.9101-5.9 8（ ）=0.8 25.8（ ）=0.258 452( )=45.2 70( )=0.7800.9( )=80.09 360( )=0.36 6.541.04= 0.5220.18=337.5= 100.8= 0.60.015= 0.5320.4=0.050.025= 0.210.012= 3.64.8= 8.010.9=0.510.85= 6.30.42= 25.263= 0.4561.5=16.43+3.6= 21.5-20.83= 5.7+4.33= 20.1-6.9=0.65+19.5= 0.293.18（保两） 4.482.8+1.535.4-9.6（2.65-1.05） 6.3【（0.9+1.8）4.5】以下简便运算12.5320.25 29.4+1.72+3.56 5.17-1.8-3.213.75-（3.75-6.48） 3.45+7.7+16.55+1.3 21.63-（8.5+9.63）36.59-（6.59+7.3） 7.23+6.84-0.84+2.770.31212= 420.16= 840.25= 580.32=1.0852= 540.47= 4203.5= 9.31001000=28710.33= 50-16.66= 60.73= 3.820.45=3.14.05= 0.5220.18= 7.540.26= 91.20.024=1、用竖式计算0.3961.2= 0.7560.36= 7.1522= 90.753.3=3.680.25= 16.90.13= 1.553.9= 3.70.016=13.760.8= 5.20.6 8.41.3 = 13.953.1=6.42.5= 4.484.4= 5.2515= 4.60.6=35.44.2= 0.0420.54= 0.760.32 0.250.046= 0.450.73= 0.430.28= 2.523.4= 1.0825=0.120.50.16（保留两位小数） 3.259.04= （用除法验算）4.80.25 0.1251.4 10.7512.5= （用乘法验算）2.50.7= （保留三位小数）10.13.3= （商用循环小数表示）8.90.05= 3.080.43= 1.526.7= 5.2229=18.723.6= 2.57.14 = 16.129916.12=5.20.90.9= 7.2899+7.28= 4.3500.2=642.640.5=2 615.715.724= (2.275 0.625)0.28=3.94+34.30.2= 1.2(9.62.4)4.8= 8.91.14.7= 2.75.43.9= 3.69.85-5.6= 8.053.4+7.6=6.584.50.9= 2.80.5+1.58= 4.85 + 0.35 1.4= 8.7 17.4 - 8.7 7.4= (1.250.125)8=324.90.9= 4.84.80.5= 4.8100.1= 56.59956.5= 7.0910.80.87.09=12.50.42.58= 0.873.16+4.64= 213.0.8257= 9.5101= 0.68 （5.2 -3.5） 1.25= 40.5 0.81 0.18=4.8 （15 2.4）= 6.81+6.8199= 0.2518540= 4.40.83.40.8= (9.37+937+937+937) 25= 42.1.1.1.75= 2.376.3+2.373.7= 2.51.250.32= 3.810.1= 2.5(3.80.04=) 7.69101= 3.810.1 = 0.2539+0.25= 0.12572= 14.70.07=460.33+540.33= 6.81+6.8199= 0.2518540=(85.27) 1.25= 6.80.750.5= 1.53+23.47.2= 3.750.1252.75= 13.50.98= 12.58.8 = 9.599= 1.21.4 0.378.4 3.142.8 0.152.340.851.12 0.865.4 4014 45.53826.3731 156035 4.82.3 1.553.97.22.1 3.877 146.413 0.3820.135.636.1 2.840.03 26.3731 32422.840.03 4.823 0.3820.13 4.24.52.523.4= 1.0855= 0.120.44= 0.242.15=0.250.046= 6.030.25= 2.931.837= 3.56816=26.5559= 11718= 9.481.36= 36.918=四、单位换算（12%）0.24米=（ ）厘米 0.09吨=（ ）千克 8.54平方分米=（ ）平方厘米 3.64千米=（ ）米 140平方厘米=（ ）平方分米 785米=（ ）千米 23分米=（ ）米 60克=（ ）千克 2.06千克=（ ）克 3元4角=（ ）元15厘米（）米 7吨60千克=（ ）吨五、脱式计算（能简算的要用简便方法计算）（24%）15.89(6.755.89) 5.171.83.2 13.75(6.483.75)3.687.562.68 7.85-（2.340.15） 35.61.815.67.213.354.682.65-5.32 73.81.6413.85.36 5.40.15=2、脱式计算（能简算的要简算）。0.1250.25847.40.28+0.282.6 23.45.85=4.80.9+0.48（40.4）2.5 0.5440.025=2、脱式计算（能简算的要简算）0.125320.781013.265.732.60.070.250.06 0.1250.4 0.640.75 14.50.2810.322 12.84 37.89 10.322.4 3.252.5 5.461.3 0.4650.15 0.7840.566552 11.20.05 90.18 1.820 70.56 7.30.25 0.7980.38 9.81.4 2.522.4 604.8 72.80.8 0.3151.53125 1320 0.09223 72.880.3150.15 9664 17625 11.40.24 2.0826 3648 960.64 7.564.21.21.4 0.378.4 3.142.8 0.851.12 0.865.4 0.152.34 4014 26.3731 45.538 156035 4.82.3 1.553.97.22.1 3.877 146.413 5.636.12.840.03 0.380.13 26.3731 32422.840.03 4.823 0.3820.13 4.24.51.642.35= 8.656.31= 28.44814= 10.8834= 0.58250= 12.53.6= 107.64= 1.867=13.886.29= 9260.15= 8500= 100.22.2826.37.