小学五年级小数计算题

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1、1、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）7.15×22=90.75÷3.3=3.68×0.25=16.9÷0.13=1.55÷3.9=3.7×0.016=13.76×0.8=5.2×0.6=8.4×1.3=6.4×0.5=4.48×0.4=5.25×5=35.4×4.2=0.042×0.54=0.76×0.32=0.25×0.046=2.52×3.4=1.08×25=0.12×1.6

2、＝4.8×0.25＝0.125×1.4≈（保留两位小数）2.5÷0.7=10.1÷3.3=0.43×0.28= （保留三位小数）（商用循环小数）10.75÷12.5=3.25×9.04=（用乘法验算）（用除法验算）0.43×0.28=6.45×0.73=4.6×0.6=8.9×0.05=3.08×0.43=1.5×26.7=5.22÷29=18.72÷3.6=13.95÷3.1=7.15×22=      90.75÷3.3 =         3.68×0.25=2、脱式计算（能简算的要简算）2.5×7.1×416.12×99＋

3、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)÷4.88.9×1.1×4.72.7×5.4×3.93.6×9.85-5.468.05×3.4+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

4、.48.7×17.4-8.7×7.412.5×0.4×2.5×80.87×3.16+4.649.5×1010.68÷（5.2-3.5）×1.2540.5÷0.81×0.184.8×（15÷2.4）2．13.×0.×82576.81+6.81×990.25×185×404.4×0.8－3.4×0.8(9.37+9．37+9．37+9．37)×2．54．2.×1.＋1.×1.752.37×6.3+2.37×3.72.5×1.25×0.323.8×10.12.5×(3.8×0.04)7.69×1010.25×39+0.250.125×7

5、246×0.33+54×0.330.25×185×40(8×5.27)×1.256.81+6.81×993.94+34.3×0.26.8×0.75÷0.53.75÷0.125–2.751.53+23.4÷7.29.5×9913.5×0.9812.5×8.86.81+6.81×99            0.25×185×402.08×(9.6÷2.4)÷4.8二、解方程：54-X=247X=495.6x+4.4x=5.213+A=28.52.4X=26.47.5x－3x=185×1.3-2x=5.524x+6x=63.66×5+2

6、X=445×1.3-2x=5.5              24x+6x=63.614X-8X=1220X-50=5028+6X=8832-22X=103X+5X=4810X×（5+1）=6099X+X=100X+3=18X-6=1256-2X=204y+2=6x+32=763x+6=1816+8x=402x-8=84x-3×9=298x-3x=105x-6×5=42x+5=72x+3=1012x-9x=96x+18=4856x-50x=305x=1578-5x=2832y-29=35x+5=1589x-9=80100-20x=2

7、055x-25x=6076y-75=123y-23=234x-20=080y+20=10053x-90=162x+9x=1112y-12=2480+5x=1007x-8=665x+35=10019y+y=4025-5x=1579y+y=8042x+28x=1403x-1=890y-90=9080y-90=7078y+2y=16088-x=809-4x=120x=4065y-30=10051y-y=10085y+1=-8645x-50=40