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1、简便计算题：1)6.9+4.8+3.10.456+6.22+3.7815.89+(6.755.89)2)4.02+5.4+0.985.171.83.213.75(3.756.48)3)3.68+7.562.687.85+2.340.85+4.6635.61.815.67.24)3.82+2.9+0.18+9.19.6+4.83.67.140.532.475)5.27+2.860.66+1.6313.354.68+2.6573.81.6413.85.366)47.87.45+8.80.398+0.36+3.6415.75+3.590.59+14.257)66.868.661.340.25x16.
2、2x4(1.250.125)x88)3.6x1023.72x3.5+6.28x3.536.83.96.19)28.6x10128.64.8x7.8+78x0.52324.90.910)4.8x100.156.5x9.9+56.57.09x10.80.8x7.0911)25.48(9.40.52)4.2=3.5320=1.25=812)18.76x9.9+18.763.52=2.5=0.43.94.1+6.15.913)5.6=3.59.6=0.8=0.44.2x99+4.21.25x2.5x3214)17.8=(1.78x4)0.49=1.415)15.2=0.25=40.89x100.114
3、6.5(23+46.5)16)3.83x4.56+3.83x5.444.36x12.5x89.7x99+9.717)27.5x3.77.5x3.78.54=2.5=0.40.65x10118)(45.932.7片8=0.1253.14x0.68+31.4x0.0325.6=1.25=0.8=2.5=0.425)4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.2418)(45.932.7片8=0.1253.14x0.68+31.4x0.0325.6=1.25=0.8=2.5=0.419)7.2x0.2+2.4x1.48.9x1.017.74x(2.81.3
4、)+1.5x2.2620)3.9x2.7+3.9x7.3181.8=0.125=0.812.7x9.9+1.2721)21x(9.33.7)5.615.02-6.8-1.025.4x11-5.422)2.3x16+2.3x23+2.39.43-(6.28-1.57)3.65x4.736.5x0.3723)46x57+23x8613.7x0.253.7=42.22x9.9+6.66x6.724)101x0.87-0.91x8710.7x16.1-15.1x10.70.79x19925)4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.2426)2.35+1.
5、713+0.287+7.651.57+0.245+7.436.02+3.6+1.9827)0.134+2.66+0.8661.27+3.9+0.73+16.17.5+4.96.528)3.070.381.621.29+3.7+2.71+6.382.451.5529)3.251.790.591.7523.40.813.47.20.32x40330)3.20.364.81.641.23+3.40.23+6.60.25x3631）12.7（3.70.84）36.541.764.540.25x0.73x432)7.6x0.8+0.2x7.60.85x1990.25x8.5x433)1.28x8.6+0.72x8.612.5x0.96x0.810.49.6x0.3534)0.8x(4.3x1.25)3.12+3.12x99
