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一、小数加减乘除及混合运算（含简便运算）1.计算下面各题，能简算的用简便方法算，并写出简算过程。1.63.91.25 35.720.0470.323.610.1 0.1386.40.1210.25（1.283.2） 4.872.34+48.70.2666.250.256 68.04（0.213.6）0.4860.013.99 19.752.5-3.5517.52.3-7.52.3 1.251140.890254 8.935.78.933.38.93一、直接写出得数：（10分）0.273 = 7.20.6 = 1.258 = 0.830.27 =0.090.4 = 100.1 = 6.51.3 = 2.8-1.09 =2.54.4 = 8.8101 =计算：68.8485.4416 67.515 289.918101.79243.264 16.828 15.6240.13815 1.35270.416323.645291.23.8 0.7560.18 51.30.27260.13 2101.4 2.6880.56 10.62525 12645 10252.77.5 150.06 25.60.032