五年級小數(shù)豎式計算精選

1、68.84-4=85.44+16=67.5+15=289.9+18=101.7+9=243.2/4=16.8+28=15.6+24=0.138+15=1.35+27=0.416+32=3.64+52=91.2+3.8=0.756+0.18=51.3+0.27=26+0.13=210+1.4=2.688S56=10.625+25=126+45=14.36+2.7=8.33y.2"1.7+0.03=32+421.25+1.2=2.41S7=4.5X0.07=6.3+0.09=2.5X3.6=19.8+3.3=5+0.25=0.76+0.4=2.36X0.22=2.8X4.58=3.57+

2、4.2=82.8+36=45X2.46=3.6S24=382.5+45=6.4X5.48=13.42X4.73=9.65X8.12=7.23X1.2=6.3X12=2.14X8.3=4.9X1.12=21.98X2.31=0.24X28.37=29.13X3.14=9.88X11.21=5.5+11=7.5+0.5=6+1.2=3.2+8=7.2+0.9=24+1.2=12+0.12=6.75+0.25=12+0.75=21+0.716.9+0.13=1.55+3.9=3.7X0.016=5.63£1=0.3S15=0.5X0.12=0.6X3S6X3=1.4X5=0.1X0.01=

3、0.35X8=7.35+7=1+0.01=4.692-2.3=5.5>2.02=3.14>0.68=3.07M.5=5.26T.6=0.85>6.3=52.6>0.252=35+73=4、判斷。(1)如果兩個因數(shù)的積不是小數(shù)，那么這兩個因數(shù)一定不是小數(shù)。()(2)一個不等于0的數(shù)的1.02倍一定比原數(shù)大。()(3)因為12X35=420,所以1.2X3.5=42.()(4)在表示近似數(shù)時，5.0也可以寫成5。()(5)整數(shù)乘法的交換律、結(jié)合律和分配律，對于小數(shù)乘法同樣適用。()(6) 0.25X9.9=0.25X(10-1)=0.25X10-0.25。()(7) 4.1

4、0與4.1大小相等，表示意義也相同。()(8) 3.994精確到百分位約是4.00.()(9) 一個數(shù)(0除外)除以小數(shù)，商一定比這個數(shù)大。()(10)兩個數(shù)相除的商是0.9,被除數(shù)不變，除數(shù)擴大10倍，商是9.()5、把下列各式中的乘積點上小數(shù)點，使等式成立。9.36>2.7=252720.89>6.43=5722752.1M.98=10315826.15>3.4=88914.5X0.07=6.3-0.09=2.5X3.6=19.8+3.3=3.57X.2=82.8+36=45X2.46=3.6+0.24=382.5+45=6.4X5.48=13.42X4.73=9.65X

5、8.12=7.23X1.2=6.3X12=2.14X8.3=4.9X1.12=21.98X2.31=0.24X28.37=29.13X3.14=9.88X11.21=920M0=780與0=960440=79X97=28>2=46X58=32X69=12.66.2854X25=48X61=326X52=45X12=0.8283697.2248.61-2.158.750.2523X37=33X12=7.65.85220.30.758.86.2858.9-317.675.983.2-3.297.2548.4-24184823+1847.65-250.98-352.5252584抬6140.7

6、382.8-721.56-2.4=1.44-0.015=2.8980.18=85.444642.84子101.7967.515230.4621.24360.7362343.51235.21子39.6之46.21-0.0385.444642.847101.7967.545230.4621.24W60.7362343.54235.21子39.6之46.21.03210勺.411.974.569.6-2.938.4-0.815卻.060.8283697.2247.650.8512.60.288.612158.750.25220.30.758.80.2858.9317.675.983.23.297.2

7、548.4-24184823+1847.65芝50.98W52.5252584寺6140.7382.8¥21.56-2.4=1.44-0.015=2.898.18=85.441642.84子101.7967.545230.4621.24360.7362343.54235.21子39.6芝46.21-0.0385.441642.84子101.7967.545230.4621.24360.7362343.54235.21子39.6-246.21-0.03210制.451.36.2791.2-3.838.4-0.815卻.061.44-0.015=1.44-0.015=2.898.18=0

8、.328+8=7.21-7=23+25=3.64+14=600+50=42X0.16=84X0.25=37.8+28=0.36X0.9=2.8980.18=3.51+3=2.4+3=20X0.5=0.8X6=1000X0.09=1.35+27=5.62X2.4=0.41X2.01=58X0.32=0.28X0.16=0.63X0.12=1.08X52=1.06X0.82=3.5X2.011.45X6.5+0.55X6.56.12X99+6.128.5X0.54=0.06X0.75=1.26+0.84=5.9X101-5.98+()=0.825.8+()=0.258452+(尸45.270+()

9、=0.7800.9-(尸80.09360+()=0.366.54X1.04=0.522+0.18=33+7.5=10+0.8=0.6+0.015=0.532+0.4=0.05+0.025=0.21+0.012=3.6+4.8=8.01+0.9=25.2+63=0.456+1.5=0.51+0.85=6.3+0.42=16.43+3.6=21.5-20.83=5.7+4.33=20.1-6.9=2.8+1.50.65+19.5=0.29X3.18(保兩)4.48-35.4-9.6+(2.65-1.05)6.3X【(0.9+1.8)+4.5以下簡便運算|12.5X32X0.2529.4+1.72+

10、3.565.17-1.8-3.213.75-(3.75-6.48)3.45+7.7+16.55+1.321.63-(8.5+9.63)36.59-(6.59+7.3)7.23+6.84-0.84+2.770.312X12=42X0.16=84X0.25=58X0.32=1.08X52=54X0.47=420X3.5=9.3+100X1000=2871+0.33=50-16.66=6X0.73=3.82X0.45=3.1X4.05=1、用豎式計算0.3964.2=0.522+0.18=0.756.36=3.680.25=16.9-0.13=13.760.8=5.2>0.67.54+0.26

11、=7.1522=1.553.9=8.4X.3=91.2+0.024=90.753.3=3.70.016=13.953.1=6.4)2,5=4.4844=5.25X5=4.6僅6=35,442=0.0420.54=0.760.320.25)0.046=0.45)0.73=0.43處.28=2.523<4=1.08)25=0.12®.5）0,16=（保留兩位小數(shù)）3,25軟04=（用除法驗算）4.8保25=0.125X1.4=10.7542.5=(用乘法驗算)2.5-0,7=（保留三位小數(shù)）10.13.3=（商用循環(huán)小數(shù)表示）18.723.6=2.5H.1M=16.129g16.1

12、2=5.2休9+0.9=7.2829+7.28=4.3>50X0.2=64-2.6485=26X15.7+15.7/4=(2.275+0.625)休28=3.94+34.30.2=1.2(9.62.4)4.8=8.9X14.7=2.754)3.9=3.6務(wù)85-5.6=8.0584+7.6=6.584.5)0.9=8.717.4-8.77.4=(1.25-0.125)8=2.8>0.5+1.58=4.85+0.351.4=32+4.9-0.9=56.599+56.57.0910.8-0.8H.09=4.8-4.8®.5=4.8t00.1=12.5®.4)2.5潟

13、0.87*16+4.64=2.13.>0.>8257=9.5101=0.68十5.2-3.5)X1.25=40.50m1保18=4.8X15皮.4)6.81+6.8199=0.25X85>40=4.4)0.8-3.44.2.X.+1.)0.8=(9.37+9.37+9.37+9.37)X2.5=>1.75=2.3763+2.373.7=2.51.25)0.32=3.8¥0.1=2.5)(3.80.04=)7.69101=3.810.1=46)0.33+540.25為9+0.25=0.12572=14.7+0.07=833=6.81+6.8199=0.25185

14、>40=3.756.125275=13.50.98=12.58.8=9.5>99=1.2X1.4=0.37X8,4=3.14X2,8=0.15X2.34=0.85X1.12=0.86X5,4=40+14=45.5+38=26.37+31=1560+35=4.8-2.3=1.55+3.9=7.2+2.1=3.87+7=146.4+13=0.382X0.13=2.84X0.03=4.8+23=0.382X0.13=4.2+4.5=2.5284=1.08«5=0.12)0.44=0.24)2.15=0.258046=6.03825=2.93-1.837=3.56816=26.5

15、559=117T8=9.48+1.36=36.948=四、單位換算(12%)0.24米=()0.09噸=()千克3.64千米=(8.54平方分米=()平方厘米)米140平方厘米=（）平方分米785米=（）千米23分米=（60克=(）千克15厘米=（3元4角=（2.06千克=(7噸60千克=（五、脫式計算（能簡算的要用簡便方法計算）（24%)13.75(6.48+3.75)15.89+(6.755.89)5.17-1.8-3.23.68+7.56-2.687.85-(2.340.15)35.6-1.8-15.6-7.213.35-4.68+2.65-5.3273.8-1.64-13.8-5.36

16、5.4+0.15=2、脫式計算（能簡算的要簡算）。0.125X0.25X8X47.4X0.28+0.28X2.623.4+5.85=4.8X0.9+0.48(40.4)X2.50.544+0.025=2、脫式計算（能簡算的要簡算）0.125320.781013.265.7X32.6處.070.25私060.12540.640歹514.5便2810.32212.8-37.89+10.32243.25255.464.30.4650.150.7840.56655211.26.059-0.181.8207代567.30之50.7980.389.842.52芝.460全872.80.出0.3154.53

17、12513200.092芝372.88+0.315.1596641762511.4&242.08芝636%896&647.564.21.2¥.4=0.37)8.4=3.14&8=0.85X.120.86)5.4=0.15&34=40+14=26.373145.5W8=156045=4.8芝.3=1.55W.9=7.2-2.1=2.84)0.03=2.84)0.03=3.87斗=146.413=5.636.10.3813=4.8-23=26.3731=0.3820.13=4.2-4.5=1.64+2.35=0.58)250=13.88-6.29=26.3

18、+7.93=18-24=0.15753.15=8.65-6.31=28.44814=10.8834=12.5+3.6=10-7.64=1.86米=926>0.15=23X7.06=43.6826=0.6121.8=100.2-2.28443（精確到百分位）25.36.88=124.8+0.24=16.7870.28（保留一位小數(shù)）2.36®.222.8M.583.574.245)2.4682.8W6382.5456.4)5.480.7560.36=0.3964.2=27.56025=5.08便65(得數(shù)保留兩位小數(shù))9.626.158（得數(shù)保留兩位小數(shù)）14.241（商用循環(huán)小數(shù)表示）203.5+11=25.2+6=34.5+15=5.6+4=1.8+12=1.8+12=7.83+9=4.08+8=0.54+6=6.3+14=72+15=14.21+7=24+15=1.26+18=43.5+29=18