小学五年级上数学计算题巧算与速算

-.z.一、五年级简便计算12.3×4×0.2512.96－〔9.6－1.52〕85×10.11.2÷0.25＋1.3×4103×0.25〔4.8＋6.4〕÷835÷12540.5÷0.81×1.0534.5×0.03+34.5×0.97〔203.4＋72.2〕÷〔1.3×0.2〕8×4.3×12.597.5÷0.39－136.72.5×10286.4÷0.24×0.254.2÷2811.16÷〔10－0.7〕(9.6+3.2)÷0.8〔300－94.8〕÷0.50.125×1612.6÷[3.5－〔9.8－8.7〕]3.2×5.6－11.40.648÷[〔0.4＋0.5〕×0.6]5.74×99＋5.748．9×1.1×4.74.75＋3.25×2.4＋7.62.7×5.4×3.93.8×1.4＋18.2÷0.73.6×9.85-5.464.8×0.258.05×3.4+7.64.7×10.26.58×4.5×0.97.63×99＋7.632.8×0.5+1.586.73＋2.56＋1.44＋3.278×5.2+3.8×3.8+3.82.37×2.5×4(6.7+6.7+6.7+6.7)×2.51.5×1029.8×25×42400÷16÷0.532×0.25×0.1252.8×3.2＋3.2×7.27.4－0.15×2.83.76×0.25－0.490.008+0.92×5－1.280.25×4.78×47.8÷〔1.3×4〕0.65×2017.2×0.9＋0.01×7.21.2×2.5＋0.8×2.58.6×10.12.5×7.1×45.6×(12.5－8.5÷0.85)16.12×99＋16.12[(8.1－5.6)×0.9－1]×0.45.2×0.9＋0.98.25×4.08+0.75×4.08+4.084.3×50×0.24.32＋5.43＋6.6864－2.64×0.515.17－6.8－3.226×15.7＋15.7×2412.75－(2.75＋6.8)(2.275＋0.625)×0.281.27＋3.9＋0.73＋16.13.94+34.3×0.212.8－4.9－5.11.2×(9.6÷2.4)÷4.86.75－〔0.9＋3.75〕8.9×1.1×4.71.34＋1.8＋3.66＋0.22.7×5.4×3.90.96－0.28＋0.04－0.723.6×9.85-5.4612.78-(4.97+2.78)8.05×3.4+7.631.7－0.5×0.7－1.656.58×4.5×0.935.72-4.9-〔5.72+5.1〕2.8×0.5+1.58111－3.67×2.8－3.67×7.232＋4.9－0.912.5×6.3+27×1.25+0.125÷0.014.8－4.8×0.53.1+25.78+6.9(1.25－0.125)×815.25+4.72+4.75+5.284.8×100.134.82－(4.82+15.2)56.5×99＋56.57.28+0.94+2.72+0.067.09×10.8－0.8×7.097.84+0.73—0.844.85+0.35÷1.46.3×99+6.38.7×17.4-8.7×7.415.7—4.3—5.712.5×0.4×2.5×81.6+0.4—1.6+0.40.87×3.16+4.6462.8÷2.5÷0.49.5×1017.3×990.68÷〔5.2-3.5〕×1.25(1.25+2.5)×840.5÷0.81×0.189.42×10—94.2×0.94.8×〔15÷2.4〕1.8×2.48+1.52×1.8-0.52．13.×0.×82578.76+0.4×3.6×2.5+1.246.81+6.81×996.5×(10-3.7)+2.980.25×185×40［4.75+8.4÷(9.2-6.8)］×404.4×0.8－3.4×0.8×(9.37+9．37+9．37+9．37)×2．50.125×7.9×164．2.×1.＋1.×1.752.48×(7.3-5.8)+1.5×7.522.37×6.3+2.37×3.712.773-［4.5×(0.75-0.356)+9.23］2.5×1.25×0.32(6.4+0.88)÷0.8+3.2×1.253.8×10.124-［5.4+(0.63+1.29÷0.23)］2.5×(3.8×0.04)2.18+4.65+7.82+5.35+12.57.69×1013.8×10.1(25+2.5+0.25)×40.25×39+0.25(35.2×45.6+45.6×63.8+45.60.125×7212.25－3.1＋0.85－6.1746×0.33+54×0.33〔〔1.9－1.9×0.9〕÷〔3.8－2.8〕二、用竖式计算1.8+0.02=5.76×3＝2.08×7.5=0.43×0.28=0.72÷0.9=90.75÷3.31.05×2.4=4.6×0.6=0.2÷0.01=16.9÷0.131.89÷0.54=3.08×0.43=0.25×40=3.7×0.0165.61÷6.1=5.22÷29=1.25×0.8=5.2×0.66.21÷0.3=13.95÷3.1=5.5×66=6.4×0.51.3÷0.95.93×0.767.8×0.35=5.25×521.84÷0.73—2.088.4×0.25=0.042×0.5428.14÷6.73.54×130.25×0.0460.396÷1.2=20－5.6746.84×7.451.08×2515.6×13=5.4÷0.03636.72÷2.40.125×1.4≈0.025×14=5.778÷5.4=110.7÷0.5410.1÷3.3=0.04×0.12＝1.5×0.25=1.204÷0.43=3.25×9.04=6÷1.2=9.2÷2.3=3.5×0.2=7.15×2218.9÷0.54=6.45×0.73=4.8+2=1.55÷3.90.35×8.6=1.5×26.7=3.5×24=8.4×1.354÷0.36=7.218÷364.25×24=35.4×4.20.462÷1.45.24÷7.25.24÷7.22.52×3.40.756÷0.36=5.84÷0.1687.11÷3.12.5÷0.7=3.06×36=8.02×3.5=1-0.01=3.68×0.251.44÷1.8=8.9×0.05=7.6×1.05=4.48×0.45.86÷0.2416.32÷515.56÷0.834.8×0.25＝0.18×15=8÷116.5-5.6=13.76×0.8=9.58÷0.23=18.72÷3.6=2.84×0.05=10.75÷12.5=3.84×2.6≈28.56÷5.1=0.42×0.3080.76×0.324.32÷3.62.7+3.13三、速算与巧算(1)5.8+2.32+0.68+4.2(2)1999+199.9+19.99+1.999(3)12.59-3.24-5.76(4)8.1+7.8+8.2+8.4+7.9+7.7(5)18×5.5(6)8.88×1.25(7)34.7×0.25(8)238÷1.25(9)0.25×12.5×3.2(10)124.68+324.68+524.68+724.68+924.68(11)5795.5795÷5.7957×579.5(12)1990×198.9-1989×198.8(13)2.25×0.16+264×0.0225+5.2×2.25+0.225×20(14)(1+0.28+0.84)×(0.28+0.84+0.66)-(1+0.28+0.84+0.66)×(0.28+0.84)(15)4.82×0.59+0.41××5.9(16)0.125×0.25×32(17)16×4.5(18)0.25×1.25×22.4(19)0.9+0.99+0.999+0.9999+0.99999(20)(72×357+357×28)÷(51×7×4)(21)98989898×99999999÷1010101÷11111111(22)4.8×÷7.5)(23)(67.8+9.48)÷×30.05(24)[1.7+1.7×(5.8-2.8)]+(1.75÷1.4)(25)3.04××2.9+5.8×6.96(26)(0.1+0.2+0.3+0.4+…+1)÷5.5(27)3.14×6.5+4.5×3.14-3.14(30)1-2+3-4+5-6+…-98+99-100+100(28)1240×3.8+124×51+1.24×1400+760×9.6+0.76×700(29)1÷(2÷3)÷(3÷4)÷(4÷5)÷…÷(1999÷2000)