五年级小数点计算题

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1、1、直接写出得数。0.45×2.5＝0.8×1.25＝0.3×3.6＝0.3×0.3＝10×0.07＝0.3×1.4＝0.05×7＝0.92×0.4＝0.2×0.26＝0.14×4＝0.02×0.1＝1.2×0.3＝0.2×0.4＝8.2＋1.8＝100－35.22＝2.3×4＝2.5×0.4＝2.4×5＝0.22×4＝3.25×0＝0.9－0.52＝3.99×1＝0×3.52＝12.5×8＝1÷0.5=8÷10=10-1.8-7.2=0.43+3.57=2.5×4×12=1.05×100=0.9×0.8=0.96÷3=1

2、.47÷0.7=5.4÷6=4÷0.8=0.16.5×10=0.56×100=3.78×100=3.215×100=0.8×10=4.08×100=1.1×0.2=0.6×0.8=3×0.9=2.5×0.4=3.6×0.4=12.5×8=50×0.04=80×0.3=1.1×9=0.16×5＝1.78＋2.2=9.6÷0.6=1.2×0.5-0.4=0.7÷0.01=2.5×0.4=12－3.9=1.25×8÷1.25=6.6÷0.66=5.37×0+4.63=4.2÷3.5＝1.6+2.4×0.3=2.14－0.9＝27

3、＋456＋73=0.3×0.3=7.2＋2.8＝0.9÷0.01＝12÷0.3=2.87÷0.7＝13÷4＝0.96÷0.3＝1.5×0.4＝7÷0.25＝2.5×0.7×0.8=8－2.5＝16÷1.6＝5.6×1.01=8×（2.5＋0.25）＝0.36＋0.64＝64.32÷16＝72.8÷0.8＝8.4÷4.2＝13.8＋9.9＝2.4×2.5＝0.05×0.8＝1.25×0.8×0.5＝12×2.5＝1.23×3＝3.2÷1.6＝3.5＋3.5×3＝19.6÷2＝8.8÷2.2=0.75×4＝（1.5＋0.25）

4、×4＝0.5×0.8=8.4×0.2=1.6×0.2＝7.2×0.3=2.8×0.3＝0.9÷0.15=1.8×0.4=5.5÷0.55=0.08×100=2.2÷0.11=5.46＋4.54=12.5×0.8=0.35×0.3=1.4×5=2.8×4=19.6÷4=22.5×4=2、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÷3.33.68×0.216.9

5、÷0.131.55÷3.93.7×0.01613.76×0.8=5.2×0.68.4×1.36.4×0.54.48×0.45.25×535.4×4.20.042×0.540.76×0.320.25×0.0462.52×3.41.08×250.12×0.5×0.16＝4.8×0.25＝0.125×1.4（保留两位小数）2.5÷0.7=（保留三位小数）10.1÷3.3=（商用循环小数）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＋16.1

6、25.2×0.9＋0.97.28×99+7.284.3×50×0.264－2.64×0.53.94+34.3×0.226×15.7＋15.7×24(2.275＋0.625)×0.281.2×(9.6÷2.4)÷4.88.9×1.1×4.72.7×5.4×3.93.6×9.85-5.468.05×3.4+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＋56.57.09×10.8－0.8×7.094.85+0.35÷1

7、.48.7×17.4-8.7×7.42．13.×0.×825712.5×0.4×2.5×80.87×3.16+4.649.5×1010.68÷（5.2-3.5）×1.254.8×（15÷2.4）40.5÷0.81×0.186.81+6.81×990.25×185×404.4×0.8－3.4×0.80.25×39+0.25(9.37+9.37+9.37+9.37)×2．54.2.×1.＋1.×1.7546×0.33+54×0.32.37×6.3+2.37×3.72.5×1.25×0.323.8×10.10.125×722.5

8、×(3.8×0.04)7.69×1013.8×10.1