1、四年级数学下册典型例题系列之第六单元：小数加减法脱式计算与简便计算专项练习（解析版）1怎样简便怎样算。20.74.563.9815.20.90.18.152.851.1519.924.89.9248.67（5.670.9）7.52.57.52.5【答案】21.28；16.2；4.1514.8；42.1；52脱式计算。63.5（15.62.7）56.4（12.60.5）【答案】50.6；68.53用简便方法计算下列各题。24.561.295.443.7110.375.172.8345.68（7.848.16）1.832.510.8336.75（4.251.8）2.721.881.722.12【答
2、案】35；2.37；29.683.51；39.2；54脱式计算，能简算的要简算。27.373.272.743.2510.43.253.81.376.212.6376.827.412.6【答案】173.2；29.6；24；36.85计算下面各题，怎样简便就怎样计算。【答案】36.8；86.9；10.29；5.1；16.56；50.556计算下面各题，怎样简便就怎样计算。【答案】1.75；13.63；1.2；67计算下面各题，能简算的要简算。【答案】；8计算下面各题。12.61.450.2820.9611.387.0318.20.983.2787.4（63.729.56）【答案】14.33；2.5
3、5；20.49；53.269计算下面各题，怎样简便就怎样计算。【答案】11.58；12.17；5.4；9.02；7.4；12.9210计算下面各题，怎样简便就怎样计算。5.78（376.8）17.683.96.6835.92.377.6331.82.653.352.80.510.497.24.083.82.67【答案】35.98；14.9；45.925.8；11；2.9511计算下面各题，怎样简便就怎样计算。6.310.50.750.56.643.364.86.052.20.958.36（7.75.36）31.97（2.454.2）17.853.745.56【答案】17.5；40.5；14；1
4、0.7；25.32；16.0312计算下列各题，能简算的要简算。27.373.272.743.2510.43.2524.63.985.46.025.85（1.891.85）64.318.7515.711.253.90.13.90.1【答案】173.2；29.6；20；2.11；50；0.213计算下面各题，怎样简便就怎样计算。8.6+15.65+1.419.325.563.4437.6(7.6+3.25)5.49+2.683.496.27+3.83+1.738.4+3.58.4+3.5【答案】25.65；10.3226.75；4.6811.83；714脱式计算。3.61.283.094.32（
5、1.262.34）20.350.2750.44.36（2.012.29）0.48【答案】5.41；0.72；1.775；0.54；15脱式计算，能简算的要简算。9985+855.63+8.8+4.37+1.2 3619 -93655101 62.6- (32.6+18.09)950128- (154-34)【答案】8500；20360；555511.91；760016用简便方法计算。27.3+73.2+72.744.25-10.75-3.254.35+8.6+15.65+1.45.49+2.68-3.4937.6-(7.6+3.25)19.38+(15.25-7.38)【答案】173.2；30
6、.25；30；4.68；26.75；27.2517脱式计算。（能用简便方法计算的要简算）3.81.42.3518.33.64.414.35.64.36.24（2.191.86）5.312.384.73.29.46.8【答案】2.85 ；10.3；4.42.19 ；22.38；19.418脱式计算。（能用简便方法计算的要简算）13.755.284.722.254.80.752.58（3.52.42）87.193.838.47.853.29.65（7.031.65）【答案】3.75；7.8；1.54.64；3.75；0.9719用简便方法计算下面各题。27.3+73.2+72.77.35-(5.2
7、-2.65)1.7+1.52+8.3+16.4876.8-27.4-12.65.85+1.89-2.855.18+6.67+4.82+5.33【答案】173.2；4.828；36.84.89；2220怎样简便就怎样计算。18.51-9.03-0.9732+6.4+68+3.675.41-(13.8+9.41)66.45-(23.18-3.55)【答案】8.51；110；52.2；46.8221怎样算简便就怎样算。4.56+1.29+5.44+3.7110.37-5.17-2.8345.68-(7.84+8.16)45.6-(83.7-78.8)36.75+(4.25-1.8)2.72+1.88-1.72+2.12【答案】15；2.37；29.68；40.7；39.2；522脱式计算，能简算的要简算53.47-（9.5+3.47）12.76-5.98+7.245.18+6.67+4.82+5.337.25-（5.1-2.75）4.65+1.88-2.6570.43-10.82-20.43-9.18【答案】40.5；14.02；22；4.9；3.88；3023计算下面各题，怎样简便就怎样计算38.73（8.735.72）98.723.4116.5917.839.52.8318.21.572.80.43【答案】24.28；58.724.5；23
