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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+48.7 0.2666.250.256 68.04 （0.213.6）0.4860.013.99 19.75 2.5-3.5517.52.3-7.52.3 1.25 1140.890254 8.93 5.78.933.38.93一、直接写出得数：（ 10 分）0.273 = 7.20.6 = 1.258 = 0.83 0.27 = 0.090.4 = 100.1 = 6.51.3 = 2.8-1.09 = 2.54.4 = 8.8 101 =计算：68.8485.441667.515289.918101.79243.26416.82815.6240.138151.35270.416323.645291.23.8260.1310.625252.77.50.7560.182101.412645150.0651.30.272.6880.56102525.60.032