五年级小数除法计算题500道(口算及笔算）含答案.docx

五年级小数除法计算题500道（口算及笔算）含答案一.口算题（共50小题）1.直接写出得数.2.1÷0.7=2÷5=l÷0.2=7÷8=5.3÷0.53=0.1÷0.01=0.25×40=6.5-5.6=1.26÷0.6=0.54÷6=2.直接写出下面各题的得数.4.8÷0.8=7.5-4.5=0.75÷15=3.5×0.4=10÷0.01=10-2.05=0.6×1.5=4÷0.25=1.36+2.87+3.64=1.8×0.4X0.25=3,直接写得数30.2÷2=0.01÷0.5=0.72÷8=4.8÷0.06=6.4+3.6=1÷3=10-1.55=1.25×8=4.口算.0.9÷0.03=7.2-2=0.05×2=0.74X11=0.25×4÷0.25×4=3.1÷3.1=1.32+8-1.32+8=7.2÷40=6.25-0.87+0.13=0.4X2.7X25：5,直接写得数.6.3÷0.3=1.8×0.5=25.1+4.9=2.5×0.5X4=6,直接写出得数.6.4÷0.2=0.9-0.89=1.07+8.3=3.6÷10=100X1.5=8.1+9=4.5X0.2=11-3.9=7.直接写得数.5.6÷0.8=6.82-5.2=2.5X0.04=1-0.5+0.5=9.15÷0.3=17.2÷0.86=1.8÷0.1=12.5×0.8XO=8,直接写得数1.4×100=2.80÷10=2.4÷100=0.33×1000=90÷6=0.025×100=90÷100=0.32+1.98=14.3+5.7=9×99+9=10÷0.01=0.22+0.8=10-2.05=4÷0.25=0÷19.8=0.2×0.05=1.36+3.64=0.4×0.25=10.直接写得数0.25÷0.5=0.32÷0.04=1.25X4=1.6÷0.4=0.54÷6=5.6÷7=11.直接写得数.5.09÷10=12.5X0.8=0.5÷0.25=45.6÷1=32.1X0.2=0.25X6=0.4×0.5=0.54÷0.9=10.2÷0.01=12.5×0.8=12.口算4÷5=1.8÷0.03=75÷2.5=0.2X25.4=3.6+4.4=10-5.2=3.4×0.2=7.8÷6=13.直接写出得数3.6÷0.3=6.3÷7=5.6×100=0.25X4=0.56÷28=36÷0.9=0.64+0.8=0.72X3=1.2×20=7÷5=6.12÷0.5=2.9÷5÷0.2=14.口算3.4÷2=2.7÷0.3=0.42÷6=4.12X2=6.3÷0.9=1.53+2.4=4.8×0.5=6.4÷80=40X0.41=30.9×9=10×4.1=4.6÷0.5=15.直接写得数.0.25÷5=0.72÷0.9=3.145×100=7.2÷3.6=l÷50=12.4÷4.1=0.01+0.99=7.6÷7.6=1.25×4=50-0÷2.5=16.直接写得数0.35÷5=0.3X2=03÷0.2=0.7×0.9=0÷7÷3=2.4X5=4.9×0=2X0.45×5=17.口算我最棒.0.64÷1.6=1.4X0.5=0.72÷0.9=10.9-8.9=2.7+7.2=0÷1.5=2.7×0.3=24÷0.3=43+2.7=200×0.07=0.25×4.9=4÷0.8=18.直接写得数0.8÷10=25+8=187÷100O=0÷58=237-9=257+0=0×0.008=0.001×100=6.0805XlOOO=24×5=19.直接写得数.0.63÷9=5.4÷1.45=0×4.65=3.5÷0.7=l÷0.25=4X0.5=0.1÷0.05=3.3÷0.1=2.7÷0.90.36÷0.12=0.14÷2=9.6÷6=20.直接写得数.8.4÷4=3.6÷0.2=0.72÷90=1.1×0.8=0.56+4.44=1.25×5×8=2.9+3.7+2.1=7.6×8+2.4×8=0.4×0.25=21.请你直接写出得数4.8÷0.8=7.5-0.45=5.7÷3.3=l÷0.25=6.2÷0.62-10.75÷1.5=0.2÷4=0.21X4=1.2×60=5+3.2÷0.8=22.直接写出得数.0.72÷0.9=23.7+2.63=4.8÷0.4=0.5÷2=6.5-5.6=l÷0.25=8÷0.8=10÷4=0.4X0.8=0.48÷0.8=0.35X4=0.3÷0.15=23.直接写出得数1.2÷0.4=2÷8=4÷0.5=0.72÷4=0÷5.32=3.6÷1.8=1-0.73=0.24÷0.6=6.4÷1.6=0.125X80=0.5×0.8=13.2÷0.6=24.直接写得数.2.5÷0.5=0.42÷0.6=3.5÷0.01=0.54÷0.6=0.8-0.35=0.25X4=12.5X0.8=0.2X50=0÷3.68=0.3×0.2=25.直接写出得数.0.56÷0.7=0.6+0.65=3.9÷1.3=12÷0.03=5.2÷O.13=99×1.01=13.5-2.8-7.2=25×0.32×125=26.算3.6÷1.2=8.1÷9=4.8÷0.6=1.25×8=99÷0.9=25÷0.05=88÷0.008=1÷2.5=27.直接写得数.0.64÷0.32=0.7×1.2=7.2÷(0.8X9)=40X0.25=0÷4.8=2.9÷2.9=0.3×0.6=0.07×50=100X0.07=22.1X1=28.口算0.02×0.1=12-4.3=36÷0.01=0.8×0.125=23+0.8=0.36÷0.4÷9=29.口算.3.6÷1.2=4.4÷4=4.8÷0.4=l÷0.25=30.直接写得数：.6.4÷8=9.8÷0.14=4.8÷16=0.63÷9=8.7÷29=0.99÷9.9=5.5÷0.11=13.8÷6.9=31.直接写出得数.0.56÷8=0.07XlO=3-1.9=1.2×0.1=51÷0.3=4.3+15.37=2.9X10.02%12.1÷3.96÷0.5832.直接写出得数.3.6÷3=7.8÷6=9.9÷9=56.7÷7=4.8÷4=3.9÷13=3.6÷12=8.1÷27=0.04÷2=0.88÷4=1.25÷5=7.5÷0.05=33.口算l÷0.25=0.78÷6=2.4÷24=6.6÷0.6=5÷O.5=34÷0.2=34.直接算出得数2.1÷2=3.8+1.02=7.5×0.4=2x-0.7×=10÷8=0.8×0.6=3.2×0.5=9.6÷0.06=3.57÷0.7=4.5+0.76=35.直接写出得数.22.4÷4=0.25X4=0.21÷7=5.6÷7=1.2X5=42÷3=6.12÷0.6=0.54÷6=38.5÷5=24÷0.8=36.直接写出得数.1.6÷0.4=7.2÷8=4.2÷0.01=2-3.6÷1.8=4÷5=4.6÷0.46=5.4÷1.8=0÷21.3=37.口算1.2÷3=0.48÷6=4.6÷23=6.8÷4=0.72÷12=0.72÷4=9.6÷6=5.2÷13=12.5÷5=0.12÷5=38.直接写得数.56÷100=1.29-0.29=0.56X100=5.35+2.5=0.625X100=5-2.1=359+402=18.6-7=8.07XlO=3.5+0.9=1.2+0.08=4×(25X14)=7.34X0=3.31+1.2=25×4÷25×4=0.25+0.2+0.75=39.口算0.42÷0.6=5X0.6=2.4÷0.24=1.25×2.3×8=7.8+1.2=10÷0.1=0.1×0.1=2.5-2.5×0.4=40.直接写出得数.10-9.9=0.67+0.3=8.9×100=2.5X4=8÷16=0.9×60=1.04÷2=9.1÷7=1.5×8=0.39÷39=0.25÷8=0.05×300=0.45÷9=7.2÷9=0X5.8=4X8X0.25=2.4÷0.2=4.8÷0.6=9.6÷0.3=96÷3=42.直接写出得数16÷5=22÷4=48÷100=12.6÷3=6.06÷6=35÷70=95÷5=1.3×4=12.6÷0.6=1.8÷6=43.直接写的数0.75÷0.5=1.6÷0.4=7÷3.5=16.8÷0.4=2.8÷0.28=0.5÷0.25=44 .口算下面各题.5.74÷10=4.2÷0.07=0.16×4=0.4÷0.8=1.2×5=0.64÷2=0.56÷0.7=0.6+0.65=3.9÷1.3=45 .计算.12.8÷4=31.5÷5=39.6÷4=97.8÷6=11.7÷3=29.4÷2=83.5÷5=95.2÷4=67.8÷2=46.口算：0.96÷8=0.08÷0.01=0.2÷0.05=036÷0.18=5.1÷1.7=0.54÷0.6=4.8÷0.24=10-0.92=0.9÷45=2.5×4÷2.5×4=47.直接写出得数.2.5×4=10÷0.1=2.8÷0.4=4.5÷0.15=7.2÷0.9=1.5×6=15÷0.5=5÷2=1.2÷0.03=1.3×3=48.直接写出得数.0.3+5.7=1-0.6=33+5.6=0.25+5.75=5.3+50.7=0.4-0.35=1-0.04=8+50.28=2.4÷2=48÷0.6=0.24÷0.2=4.8÷6=49.直接写出得数.3.6÷1.2=0.72÷0.9=2.6÷13=4.8÷0.4=4.4÷4=0.78÷6=7.2÷0.4=l÷0.25=7.1×0.4=4.5÷0.15=1-0.07=0.42÷0.7=50.直接写得数0.29÷100=5÷1000=19+0÷19=423-(100+23)=170×100=320÷100=90-26-13=0.56×100÷1000=0.26X1000=24X99+24=38-25÷12-25=500÷100X1000=二.竖式计算（共50小题）1 .竖式计算.0.51÷0.5=98÷5.6=20.4÷L7=验算:2 .用竖式计算（需验算，除不尽的保留两位小数）.1.092÷0.42=*210÷1.4=8.9÷0.563 .列竖式计算.69.02÷3.426.8×0.3546.8÷3.4（保留一位小数）4 .列竖式计算.2.05÷250.13÷0.17（商精确到百分位）4.2÷0.284.2÷1.32（得数保留三位小数）5 .用竖式计算.117.3÷0.4624×0.3740.32÷l.68.6 .竖式计算2.1÷0.7=7÷035=7.2÷4=7 .用竖式计算并验算.2.76×24=12.6÷0.28=8 .用竖式计算.220.5÷15=（用乘法验算）2.64X1.09=（得数保留两位小数）6.3÷0.125=0.84X1.65=9 .列竖式计算.（后两题得数保留两位小数）10 .竖式计算.12.4÷4=45.9÷0.6=51÷0.3=52.8÷12=75.6÷0.18=9.6÷0.32=11 .用竖式计算13÷2.554.5÷0.160.68÷0.95（保留两位小数）2.05×0.16（验算）78.6÷11=（商用循环小数表示）6.21÷0.03.12 .竖式计算，带*的要验算.1.25÷0.25=78.6÷11=（商用循环小数示）5.63÷7.84数保留两位小数）28.28÷0.4=*0.303÷5=*1.57÷3.90.58X0.2470.7÷33（商用循环小数表示）14 .竖式计算（得数保留1位小数）带的验算*64.8÷1.8*8 - 6.69七0.65 X 3.84 七15 .竖式计算.（带*的要验算）9.4÷11=*144÷12=14.2÷11=16 .竖式计算.75.6÷0.1825.6÷0.0322.78×1.85.63÷6.1（得数保留两位小数）10÷3.3（用循环小数表示）17 .竖式计算，按要求保留商的近似值.30÷7（保留两位小数）60.9÷3.2（保留一位小数）25÷9.9（保留整数）(1)6.21÷0.03=(2)10.8÷45=(3)8.54÷0.7=(4)72.9÷0.9=19 .竖式计算.(第、题验算)50.96÷6.59.25÷3.7:15÷746.72÷4.2=20 .用竖式计算(1)1.25÷0.25=(2)8.4÷0.56=（3）8.54÷0.7=（验算）（4）78,6÷11=（商用循环小数表示）21 .用竖式计算.4.5×0.18=2.346÷2.3=验算：70.3X3.6=5.06÷2.2=22 .用竖式计算（带*得数保留两位小数）2.6×0.2529.9÷0.46*4.65÷1.3.23 .列竖式计算（除不尽的保留两位小数）24.6÷0.16;13.9÷6;0.325÷L5;24.用竖式计算，并指出哪些是循环小数.7.05÷0.941.71÷3.84.83÷0.75.7÷938.2÷2.72.16÷181.8÷0.253.7÷2.2.25.用竖式计算(1)3.9÷0.26（2）9.35÷3.4（得数保留一位小数）（3）0.17÷0.11（商用循环小数表示）（4）0.168÷0.7（5）4.05÷18（得数保留两位小数）（6）4.68÷5.4=（商用循环小数表示）11.7÷36;1.69÷26;54.81÷27.27 .将下列式子的得数保留两位小数25.32÷O.15L03÷1.2(3)1.07÷9.29.45÷O.32(S)13.51÷O.13(6)17.96÷0.36.28 .列竖式计算,（第三小题得数保留两位小数，第五小题请写出验算过程.）47.04÷5.6=3.28×2.7=0.764X1*52.92÷0.27=8÷1.28=15.36 ÷ 12=29 .列竖式计算:30.竖式计算.(1) 0.38×0.23(5) 52.95÷75(6) 3.01÷7(7) 4.95÷11（8） 84.01÷31 （用乘法验算）（9） 0.646÷ 19(10) 4.7×0.59.(2)5.79X3.6(3)4.6×0.25(4)6÷2431.计算下面各题，并用乘法验算0.646÷19.(1)15.6÷12(2)328÷16(3)1.35÷27(4)32.用竖式计算下列各题.（除不尽的保留两位小数，后面两道题要验算）45.15÷1.5=52.65÷1.3=15.75÷2.1=8.42+0.6=0.436÷0.2=9.25÷3.7=33.列竖式计算6.6÷443.5÷2918.9÷271.35÷1537.5÷628.6÷1120.4÷243.64÷52.34.竖式计算0.448÷32=14.3+6.7=3.8X0.26=1132-8.95=35.用竖式计算1.26÷1.8=64X5.04=43.5÷0.29=验算5.63÷6.1（得数保留两位小数）27.8÷2.5=验算9.8×0.75=36.笔算5.02X4.8=135X320=26÷0.13=48÷2.3=（得数保留两位小数）37 .用竖式计算，加号的要验算.*0.756÷0.18=0.35 × 0.48= 6.02 - 5.94=38 .用竖式计算（有的要验算）96.6÷427.79÷956.3÷0.427÷0.350.14÷0.0842÷8.39 .用竖式计算.7.8÷75=2.55÷2.5=2.5×1.04=40 .列竖式计算3.5×10.880.93÷26.7（精确十分位）1.42÷1.1（商用循环小数表示）41 .计算下面各题，除不尽的用循环小数表示商43.8÷120.12÷0.257÷0.3511.62÷942 .竖式计算30.6÷454.06 ÷ 0.58X54.6÷0.9L43 .列竖式计算.0.58×0.08=（结果保留两位小数）0.54÷0.018=13.6÷3=（商用循环小数表示）44 .列竖式计算，并验算前两个，第三个保留两位小数.95.2÷28=46.8÷0.13=5.63÷7.8=45 .竖式0.73×2.157.38÷1.65.95÷27.6（得数保留两位小数）46 .用竖式计算.3.38÷1830.9X2.75.95÷27.6（得数保留两位小数）47 .列竖式计算.4.83÷23=3.09÷1.5=0.14÷0.08=（验算）48 .竖式计算.70÷5.6=227.8÷0.34=7.525÷0.38=49 .用竖式计算下面各题，除不尽的保留两位小数8.65÷0.251.8÷127.2÷1.1.50 .用竖式计算.7.02X1.329.83÷9.50.54÷3.6参考答案一.口算题（共50小题）L【解答】解：2.1÷0.7=32÷5=0.4l÷0.2=57÷8=0.8755.3÷0.53=100.1÷0.01=100.25×40=106.5-5.6=0.91.26÷0.6=2.10.54÷6=0.092.【解答】解:4.8÷0.8=67.5-4.5=30.75÷15=0.053.5×0.4=1.410÷0.01=100010-2.05=7.950.6×1.5=0.94÷0.25=161.36+2.87+3.64=7.871.8X0.4X0.25=0.183.【解答】解30.2÷2=15.10.01÷0.5=0.020.72÷8=0.094.8÷0.06=806.4+3.6=10+3='IO-L55=8.451.25×8=10,34.【解答】解：0.9÷0.03=307.2-2=5.20.05×2=0.10.74×11=8.140.25×4÷0.25×4=163.1÷3.1=11.32+8-132+8=167.2÷40=0.186.25-0.87+0.13=5.510.4X2.7X25=275.【解答】解：6.3÷0.3=211.8×0.5=0.925.1+4.9=302.5×0.5×4=56 .【解答】解：6.4÷0.2=320.9-0.89=0.011.07+8.3=9.373.6÷10=0.36100X1.5=1508.1+9=17.14.5×0.2=0.911-3.9=7.17 .【解答】解:5.6÷0.8=76.82-5.2=1.622.5×0.04=0.11-0.5+0.5=19.15÷0.3=30.517.2÷0.86=201.8÷0.1=1812.5×0.8XO=O1.4×100=14090÷6=1514.3+5.7=209.【解答】解:10÷0.01=10000÷ 19.8=02.80÷10=0.280.025×100=2.59X 99+9=9000.22+0.8=1.020.2 × 0.05=0.012.4÷ 100=0.02490 ÷ 100=0.910 - 2.05=7.951.36+3.64=50.33X1000=3300.32+1.98=2.34÷0.25=160.4 × 0.25=0.110 .【解答】解：0.25÷0.5=0.50.32÷0.04=81.25X4=51.6÷0.4=40.54÷6=0.095.6÷7=0.811 .【解答】解：5.09÷12.5X0.5÷0.25=245.6÷1=45.632.1×10=0.5090.25×6=l.f0.8=10>0.4×0.5=0.20.544-10.2÷0.2=6.4212.5X0.8=1012.【解答】解：4÷5=0.81.8÷0.03=600.9=0.675÷2.5=300.01=10200.2X25.4=5.083.6+4.4=810-5.2=4.83.4×0.2=0.687.8÷6=1.313.【解答】解:3.6÷0.3=126.3÷7=0.95.6×100=5600.25×4=l0.72X3=2.160.56÷28=0.0236÷0.9=400.64+0.8=1.441.2X20=247÷5=1.46.12÷0.5=12.242.9÷5÷0.2=2.93.4÷2=1.72.7÷0.3=90.42÷6=0.074.12X2=8.246.3÷0.9=71.53+2.4=3.934.8×0.5=2.46.4÷80=0.0840×0.41=16.430.9×9=278.110X4.1=414.6÷0.5=9.215.【解答】解:0.25÷5=0.050.72÷0.9=0.83.145×100=314.57.2÷3.6=21÷50=0.0212.4÷4.1=30.01+0.99=17.6÷7.6=11.25×4=550-0÷2.5=5016.【解答】解:0.35÷5=0.070.3×2=0.60.3÷0.2=1.50.7×0.9=0.630÷7÷3=02.4×5=1.24.9XO=O2×0.45X5=4.517.【解答】解:0.64÷1.6=0.41.4×0.5=0.70.72÷0.9=0.810.9-8.9=22.7+7.2=9.90÷1.5=02.7X0.3=0.8124÷0.3=8043+2.7=7200×0.07=140.25X4.9=1.2254÷0.8=518【解答】解:0.8÷10=0.825+8=33187÷1000=0.187O÷58=0237-9=226257+0=2570×0.008=00.001X100=0.16.0805×1000=6080.524X5=12019【解答】解:0.63÷9=0.075.4÷1.453.720X4.65=03.5÷0.7=5l÷0.25=44×0.5=20.1÷0.05=23.3÷0.1=332.7÷0.9=30.36÷0.12=30.14÷2=0.079.6÷6=1.620.【解答】解:8.4÷4=2.13.6÷0.2=180.72÷90=0.0081.1×0.8=0.880.56+4.44=51.25×5×8=502.9+3.7+2.1=8.77.6×8+2.4×8=800.4×0.25=0.121.【解答】解:4.8÷0.8=67.5-0.45=7.055.7÷3.3=9l÷0.25=46.2÷0.62-1=90.75÷1.5=0.50.2÷4=0.050.21X4=0.841.2X60=725÷3.2÷0.8=922.【解答】解:0.72÷0.9=0.823.7+2.63=26.334.8÷0.4=120.5÷2=0.256.5-5.6=0.9l÷0.25=48÷0.8=1010÷4=2.50.4X0.8=0.320.48÷0.8=0.60.35X4=1.40.3÷0.15=223【解答】解:1.2÷0.4=32÷8=0.254÷0.5=80.72÷4=0.180÷5.32=03.6+1.8=5.41-0.73=0.270.24÷0.6=0.46.4÷1.6=40.125X80=100.5×0.8=0.413.2÷0.6=2224.【解答】解:2.5÷0.5=50.42÷0.6=0.73.5÷0.01=3500.54÷0.6=0.90.8-0.35=0.450.25X4=112.5X0.8=100.2×50=100÷3.68=00.3X0.2=0.0625.【解答】解:0.56÷0.7=0.80.6+0.65=1.253.9÷1.3=312÷0.03=4005.2÷0.13=4099X1.01=99.9913.5-2.8-7.2=3.525×0.32×125=100026【解答】解:3.6÷1.2=38.1÷9=0.94.8÷0.6=81.25×8=1099÷0.9=11025÷0.05=50088÷0.008=11000l÷2.5=0.427 .【解答】解：0÷4.8=022.1×1=22.10.64÷0.32=20.7×1.2=0.847.2÷(0.8×9)=140×0.25=102.9÷2.9=10.3×0.6=0.180.07×50=3.5100×0.07=728 .【解答】解：0.02×0.1=0.00212-43=7.736÷0.01=36000.8×0.125=0.123+0.8=3.10.36÷0.4÷9=0.129 .【解答】解：3.6÷1.2=34.4÷4=1.14.8÷0.4=12l÷0.25=430 .【解答】解:6.4÷8=0.89.8÷0.14=704.8÷16=0.30.63÷9=0.078.7÷29=0.30.99÷9.9=0.15.5÷0.11=5013.8÷6.9=231.【解答】解:0.56÷8=0.071.2X0.1=0.122.9X10.02300.07 × 10=0.751÷0.3=17012.1÷3.933 - 1.9=1.143+15.37=19.676÷0.581032.【解答】解:3.6÷3=1.27.8÷6=1.34.8÷4=1.23.9÷13=0.39.9÷9=1.13.6÷12=0.356.7÷7=8.18.1÷27=0.30.04÷ 2=0.02 0.88÷4=0.22 1.25÷5=0.25 7.5÷0.05=150l÷0.25=40.78÷6=0.132.4÷24=0.16.6÷0.6=ll5÷0.5=1034÷0.2=1700.8 × 7=5.68 × 0.6=4.870 × 0.12=8.434.【解答】解:2.1÷2=1.053.8+1.02=4.827.5 × 0.4=32x - 0.7x=1.3x 10÷8=1.250.8 × 0.6=0.48 3.2 × 0.5=1.69.6÷0.06=160 3.57÷0.7=5.1 4.5+0.76=5.2635 .【解答】解:22.4÷4=5.6 0.25X4=10.21 ÷ 7=0.03 5.6÷7=0.81.2 × 5=642÷3=146.12÷0.6=10.20.54÷6=0.09 38.5÷5=7.7 24÷0.8=3036 .【解答】解:1.6÷0.4=4 7.2÷8=0.94.2÷0.01=4202 - 3.6÷ 1.8=04÷5=0.84.6÷0.46=10 5.4÷ 1.8=30÷21.3=037【解答】解:1.2÷3=0.40.48 ÷ 6=0.08 4.6÷23=0.26.8÷4=1.70.72÷ 12=0.060.72÷4=0.18 9.6÷6=1.65.2÷ 13=0.412.5÷5=2.5 0.12÷5=0.02438.【解答】解:56÷ 100=0.561.29 - 0.29=10.56X100=565.35+2.5=7.850.625X100=62.55 - 2.1=2.9359+402=76118.6 - 7=11.68.07 × 10=80.73.5+0.9=4.41.2+0.08=1.284× (25X14) =14007.34X0=03.31+1.2=4.5125×4÷25×4=160.25+0.2+0.75=1.239.【解答】解:0.42÷0.6=0.7 5 × 0.6=32.4÷0.24=10 1.25 × 2.3 X 8=237.8+1.2=910÷0.1=100 0.1 ×0.1=0.01 2.5 - 2.5×0.4=1.540.【解答】解:10 - 9.9=0.1O8÷ 16=0.5O1.5 × 8=12O0.45 ÷ 9=0.0570.67+0.3=0.970.9 × 60=540.39÷39=0.017.2÷9=0.88.9×100=8901.04÷2=0.520.25÷8=0.03125OX 5.8=02.5×4=109.1÷7=1.30.05 × 300=154× 8 × 0.25=841.【解答】解：2.4÷2=1.248÷0.6=800.24÷0.2=1.24.8÷6=0.82.4÷0.2=124.8÷0.6=89.6÷0.3=3296÷3=3242 .【解答】解：16÷5=3.222÷4=5.548÷100=0.4812.6÷3=4.26.06÷6=1.0135÷70=0.595÷5=191.3×4=5.212.6÷0.6=211.8÷6=0.343 .【解答】解：0.75÷0.5=1.51.6÷0.4=47÷3.5=216.8÷0.4=422.8÷0.28=100.5÷0.25=244.【解答】解：5.74÷10=0.5744.2÷0.07=600.16×4=0.640.4÷0.8=0.51.2×5=60.64÷2=0320.56÷0.7=0.80.6+0.65=1.253.9÷1.3=345.【解答】解：(1)12.8÷4=3.2(2)31.5÷5=6.3(3)39.6÷4=9.9(4)97.8÷6=16.3(5)11.7÷3=3.9(6)29.4÷2=14.7(7)83.5÷5=16.7(8)95,2÷4=23.8(9)67.8÷2=33.946.【解答】解：口算:(1)0.96÷(2)0.08÷(3)0.2÷(4)0.36÷(5)5.1÷1.7=38=0.120.01=80.05=40.18=2(6)0.54÷(7)4.8÷(8)10-(9)0.9÷(10)2.5×4÷0.6=0.90.24=200.92=0.0845=0.022.5×4=1647 .【解答】解:2.5×4=1010÷0.1=1002.8÷0.4=74.5÷0.15=307.2÷0.9=81.5×6=915÷0.5=305÷2=2.51.2÷0.03=401.3×3=3.948 .【解答】解:03+5.7=61 - 0.6=0.433+5.6=8.90.25+5.75=65.3+50.7