四年级数学下册计算题练习一、直接写出得数：2.7+6.3=0.58+3.5=6-2.2=5.6-2.8=25×12=6.68-2.1=6.38+5.62=3.92-0.9=0.25×10=100×2.003=62÷10=123.5÷100=9.025×100=9-2.3-3.7=4×31×25=28×0÷54=65+37×0=5.5+2.81+4.5=25×4÷25×4＝二、竖式计算并验算：12.65+3.5=85.6-3.21=三、计算，有些能简便的要简便计算：89×99+892.63+5.8+7.37+4.252×15-5×5255×1022.58-1.6+3.42125×6445×25+75×4523.5-2.8-7.258.65-(3.2+8.65)99×125×83200÷25÷4250÷8×480+（146-46×3）48-（5.2+2.03×10）32×15+（32.6+8.09）3.7+8.4=0.58+3.2=6-3.3=5.4-2.8=25×16=6.68-2.5=6.38+8.62=3.92-0.2=0.225×10=100×2.03=6.2÷10=123÷100=0.025×100=13-2.3-3.7=4×28×25=36×0÷2.55=2.8+58×0=5.5+4.52+4.5=100×3÷100×312.65+7.5=83.6-4.35=99×85+855.63+8.8+4.37+1.236×19-9×3655×1012.38-2.4+3.62125×2475×55+75×4527.5-6.8-3.255.83-(3.2+5.83)29×125×85600÷25÷4250÷8×458+124-24×332.3-5.02+2.03×1032×18+32.6+18.09“√”“×”117.53.56+6.442120.3987.6212.3834.9+5.1-13.7+2.3432.17-0.45-4.1757.7218.562627.5872.460.7418.325.617.522.7210.8222.9910.849.1628040.6838.446*40.959.55.9*530.05100,10.86M0.7M2.15M*30.04CM0.8M034670.231.081.421.861.5262.440.7=()0.36=()0.005=()0.888=()0.06=()0.404=()10.9920.03330.0044451:0.18×10=4.3÷10=0.18×100=4.3÷100=0.18×1000=4.3÷1000=93.07×10=93.07×100=93.07×1000=93.07×10000=93.07÷10=93.07÷100=93.07÷1000=93.07÷10000=37m=()km53+70=9+55=800=9.5=8+9=÷10×100030.070.062×10÷1003.73237.328.7387.30.8730.008738730□30.07÷100.062×10003.732×1037.32÷1005.70=1.75=75=42.195km=m400m=km1.42m=cm0.617kg=g2650kg=t985g=kg0.98L=mL1250mL=L750mL=L2925cm2=m20.075dm2=cm2623.7cm2=dm2375mL○0.8L0.98t○120kg1.563km77m=m0.12m20.28dm2=m210028.8080030.9=0.90043.030=3.357.050=7.0566=6.0003=500=23=80=×÷19=9.0=9.00=9.0002501/10051/105001/100031430.00=350.050.05003.14○4.135.192○5.12912.001○12.010.473○0.4610.347○10.3437.281○8.001396