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1、4.66=0.1815=31.524.50.631.051、得数保留一位小数。15.6x13=，3.06x36二,4.230,0280.320.20.372A35.60.5066.7283.234.30.238.97=0.02514=0.80.56360.563.5820.50.92、得数保留两位小数。，8.91.1473.69.85-5.466.584.50.92.5(3.80.04)(85.27)1.250.2539+0.252.7x5.4x398.053.4+7.62.80.51.587.69101，460.33+540.330.125x72，1、下面各题，怎样算简便就怎样算。9.8+9
2、99.81.25884.6532+2,546.5+0.46543012.50.42.589.51014.27.8+2.24.20.87x3.16+4.64,50.30.25.26-106.8-0.849.8-O.6+3.2O.60.51.138.25+2.4O.512.8-4.8O.25201.95-1.87. 5+2.55.21020.454.30.250.450.8101-50.8.7.80.36-0.647.880.91.250.4(2.5+25)2.4+7.63.414.2514.64.2514.6811.012.1399.36.24.264(O.1620.5)2.61.92.62.8
3、80.127.58. 5-21.287.66.8(O.256.80.251.2532O.133.89+0.136.111028.56.750.250.4.38.75-(24.5+8.75)O.42.32O.25O.75IO1.4.23.20.97.5699+7.5670.317.487.63.645.223.321.8O.8-1.2545(5.25O.25)16.5101-16.50.960.3141.2542.58.36.45(O.82+3.40.2)9.072.640.41.510113.6O.85-3.6O.851048.5O.256.2O.4236.5+176.512.67.5+8.3
4、86.46.4-O.4360.40.25(24.6-18.1)3.47.69.9+7.60.b13.60.812.523.98.5-3.98.5(2.55+9.616)0.429.20.254.脱式计算,能简算的要简算。，O.1750.254O.1750.250.4200(172-72)25.630840(240-212)800252000125,256349000125列竖式计算：2124=7.20.18=,列竖式计算（得数保留两位小数）。”2101.48.560.42.688O.561OO.004,2.77.525.60.03242040800409427“10-7.64=.13.88-6
5、.29二，12.6+7.4378.44814二326.07-二、列竖式计算.1.64+2.35=O.48350三9.5234二9.25X16=8.34-6.2：12.6+3.4=81.36=850=2922（保留两位小数）1.25X320X25,489101-489.1.86X7三26.3+7.93=100.2-2.28=三、计算.0.252744536+64459.9999+9.98251.25162845+301356+5.690.9854+1.5.二、列竖式计算.0.58X250=10.8834=9260.15=8500=449（精确到百分位）23X7.06=三、计算(能简便的用简便方法
6、计算).8251.2516445.55-(6.82+15.55)4.839+614.834.52-17.87-12.232.556+4.565.489X1014894.57+3.17+3.43+5.83(85+40)X(205).578-4054516444.6-4.6X4.2、用竖式计算：（6分），O.372.4=1.55+3.82（保留一位小数）,3、递等式计算，能简便的用简便方法计算。（18分），5.58.2+1.85.50.250.8944.8X0.98.8.8X1.257.650.85+1.123.45.2X3.2,4、用竖式计算：（6分）56.50.24=93.60.052=3、递
7、等式计算，能简便的用简便方法计算。（18分），2.35X4.64+5.362.3512.51.360.82.610.1.4.40.2525.212+2.943.515-1.45。4、用竖式计算：（6分），0.59X0.027=6.726.4=5、递等式计算，能简便的用简便方法计算。（18分），1.873.05+8.13X3.051.250.450.89.83.7.O.442.52.250.40.631.043.2-4.7,3、递等式计算，能简便的用简便方法计算。（18分），3.26X10.1-0.13.260.1259.88102X4.8，2.42.5（27.8-15.6）0.89.1257+
8、4.84.2、用竖式计算：（6分）.1.035.9=3.84.5.（得数保留两位小数）一3、递等式计算，能简便的用简便方法计算。（18分），1.396.1+3.91.390.251.60.410.IX1.9.2.4X1.250.48X20.2-4.242.720.48+0.52,2、用竖式计算：（6分）O.861.2=5.636.1.（得数保留两位小数）.3、递等式计算，能简便的用简便方法计算。（18分），1.22.5+0.82.52.330.2541020.45.8.81.257.06X2.4-5.70211.4+262、竖式计算：，1.062.5=2.70.43=28.20.45=5.61.3=-O.15753.15=O.6121.8=16.7870.28(保留一位小教)，3、脱式计算：，2.1399.36.2376-1.50.24*0.720.80.324.264(0.16X20.5)“4、计算卜面各题。能简便的用简便方法计算.6.82.7+2.73.2，4.80.27+0.522.7.4.050.5+10.7521.60.8-1.258.46.9(6.44-4.14)0.38102
