五年级数学计算能力竞赛.doc

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1、五年级数学计算能力竞赛一、用竖式计算0.396÷1.2=0.756÷0.36=15.6×13=0.18×15=0.025×14=3.06×36=0.04×0.12＝3.84×2.6≈5.76×3＝（保留一位小数）7.15×2290.75÷3.33.68×0.2516.9÷0.131.55÷3.93.7×0.01613.76×0.8=5.2×0.68.4×1.36.4×0.54.48×0.45.25×535.4×4.20.042×0.540.76×0.3202.5×0.0462.52×3.41.08×250.12×.05×0.16＝4.8×0.

2、25＝0.125×1.4≈（保留两位小数）2.5÷0.7=（保留三位小数）10.1÷3.3=（商保留两小数）10.75÷12.5=（用乘法验算）3.25×9.04=（用除法验算）3、脱式计算（能简算的要简算）2.5×7.1×416.12×99＋16.125.2×0.9＋0.97.28×99+7.284.3×50×0.264－2.64×0.526×15.7＋15.7×24(2.275＋0.625)×0.283.94+34.3×0.21.2×(9.6÷2.4)÷4.88.9×1.1×4.72.7×5.4×3.93.6×9.85-5.460.68÷

3、（5.2-3.5）×1.258.7×17.4-8.7×7.48.05×3.4+7.66.58×4.5×0.92.8×0.5+1.5832＋4.9－0.94.8－4.8×0.5(1.25－0.125)×84.8×100.156.5×99＋56.57.09×10.8－0.8×7.0912.5×0.4×2.5×80.87×3.16+4.649.5×10140.5÷0.81×0.184.8×（15÷2.4）2.13×0.4×82576.81+6.81×990.25×185×404.4×0.8－3.4×0.8(9.37+9.37+9.37+.937)×

4、2.54.2.×1.75＋15.8×1.752.37×6.3+2.37×3.72.5×1.25×0.323.8×10.12.5×(3.8×0.04)7.69×1013.8×10.10.25×39+0.250.125×7246×0.33+54×0.33(8×5.27)×1.256.81+6.81×990.25×185×406.8×0.75÷0.53.75÷0.125–2.751.53+23.4÷7.29.5×9913.5×0.9812.5×8.84.85+0.35÷1.4