1、精品文档精品文档4.025.40.985.17简便运算练习（1）1.83.213.75(3.75+6.48)3.687.562.687.85+2.340.85+4.667.140.532.473.822.90.189.19.6+4.83.635.61.815.67.25.272.860.661.6313.354.68+2.6547.87.45+8.80.398+0.36+3.6415.75+3.590.59+14.2542.5(6.07+1.13)73.81.6413.85.3666.868.661.340.25X16.2X45.48(9.40.52)3.72X3.5+6.28X3.536.8
2、3.96.1 24.8X7.8+78X0.523.6X102 6.4X0.25+3.6+432+4.9 0.9精品文档9.7X99+9.70.89X100.15.6-3.5146.5(23+46.5)精品文档简便运算练习(2)(1.250.125)X81.25X2.5X32320-1.25-83.522.50.417.8-(1.78X4)9.6-0.8-0.456.5X9.9+56.57.09X10.80.8X7.0918.76X9.9+18.764.78-0.2+3.443.94.1+6.15.90.49-1.44.2-3.53.60.6X2 3.65X10.13.63.6X0.815.2-
3、0.25-44.84.8X0.54.8X100.14.2X99+4.2精品文档3.25+1.790.59+1.7523.40.813.47.20.85X199精品文档简便运算练习(3)15.6X13.115.615.6X2.10.65X101+3.7+2.71+6.30.32X40327.5X3.77.5X3.78.54-2.5-0.43.83X4.56+3.83X5.447.5+4.96.54.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.2482.451.552.35+1.713+0.287+7.651.57+0.245+7.430.134+2.66+
4、0.8661.27+3.9+0.73+16.15.83X2+4.27(45.932.7)-8-0.1254.36X12.5X86.02+3.6+1.983.070.381.621.29精品文档147.322.684.9-1.42.64+8.67+7.36+11.33精品文档3.2+0.36+4.8+1.641.23+3.40.23+6.60.25X36简便运算练习（4）12.7（3.7+0.84）36.541.764.540.25X0.73X47.6X0.8+0.2X7.612.5X0.96X0.80.25X8.5X41.28X8.6+0.72X8.610.49.6X0.354.25-2.5X
5、9.9+0.170.8X（4.3X1.25）3.12+3.12X9928.6X10128.62.4X1024.23+6.17）X0.80.86X15.70.86X14.7精品文档147.322.684.9-1.42.64+8.67+7.36+11.33精品文档精品文档精品文档2.31X1.2X0.53.9-（1.3X5）2.50.25）X0.49.16X1.50.5X9.163.63.6X0.54.5-1.84.2-3.5930简便运算练习（5）-0.6-563.4-2.5-0.47.7+1.54）-0.72.5X2.40.35X1.25X2X0.82.7-4532.4X0.9+0.1X32.415-（0.15X0.4）15-0.25（1.250.125）X87.74X（2.81.3）+1.5X2.2精品文档精品文档21X(9.33.7)5.636.541.764.5423.40.813.47.213.7X0.253.7-44.9宁1.40.85X1990.25X363.2X0.25X12.570-28精品文档精品文档
