4.5+6.36.5+4.88.6+7.710.05+0.434.6-4.99-4.23.45÷1065.5÷109.43÷103.2÷1002.75×106.783

4.5+6.36.5+4.88.6+7.710.05+0.434.6-4.99-4.23.45÷1065.5÷109.43÷103.2÷1002.75×106.783×1000.35×20.8×65.2+1.70.01×81.6×0.37.31×1003.8×46.3×0.10.8×0.90.7×1.22.5×0.44.5-1.57.5-0.10.125×80.23×0.59.6+58.36+0.750.35×60.83+0.63.16×20.65×24.7×0.4×00.09×60.4×0.12.3×0.38.3-2.45×0.021.68+3.349.6÷60.03×1.20.4+1.57.9×0.010.45+0.551.2+439.2-0.80.85×410.3+2.9100×0.60.3×7125×0.82.5×43.7+4.87×0.083.6÷0.69.3+0.70.162×1004.2÷30.25×4×1.2．

解：4.5+6.3=10.86.5+4.8=11.38.6+7.7=16.310.05+0.4=10.4534.6-4.9=29.79-4.2=4.83.45÷10=0.34565.5÷10=6.559.43÷10=0.9433.2÷100=0.0322.75×10=27.56.783×100=678.30.35×2=0.70.8×6=4.85.2+1.7=6.90.01×8=0.081.6×0.3=0.487.31×100=7313.8×4=15.26.3×0.1=0.630.8×0.9=0.720.7×1.2=0.842.5×0.4=14.5-1.5=37.5-0.1=7.40.125×8=10.23×0.5=0.1159.6+5=14.68.36+0.75=9.110.35×6=2.10.83+0.6=1.433.16×2=6.320.65×2=1.34.7×0.4×0=00.09×6=0.540.4×0.1=0.042.3×0.3=0.698.3-2.4=5.95×0.02=0.11.68+3.34=5.029.6÷6=1.60.03×1.2=0.0360.4+1.5=1.97.9×0.01=0.0790.45+0.55=11.2+43=44.29.2-0.8=8.40.85×4=3.410.3+2.9=13.2100×0.6=600.3×7=2.1125×0.8=1002.5×4=103.7+4.8=8.57×0.08=0.563.6÷0.6=69.3+0.7=100.162×100=16.24.2÷3=1.40.25×4×1.2=1.2解析分析：根据小数的加减乘除及四则混合运算进行计算即可．点评：口算题目，要求快速准确，能用简便方法的要用简便方法．

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