小数除法竖式计算题(无限和循环小数)
商是循环小数的除法算式10道
商是循环小数的除法算式10道商是循环小数的除法算式10道循环小数是指在小数部分有一段重复的数字序列,这种小数可以表示为一个有限的分数。
而商是循环小数的除法算式就是指,将循环小数转换成分数的过程。
下面将介绍10道商是循环小数的除法算式。
一、1÷71÷7=0.142857142857……由于数字序列142857一直重复出现,因此1÷7可以表示为1/7。
二、2÷32÷3=0.6666666666……由于数字序列6一直重复出现,因此2÷3可以表示为2/3。
三、5÷95÷9=0.5555555555……由于数字序列5一直重复出现,因此5÷9可以表示为5/9。
四、4÷114÷11=0.3636363636……由于数字序列36一直重复出现,因此4÷11可以表示为4/11。
五、1÷31÷3=0.33333333333……由于数字序列3一直重复出现,因此1÷3可以表示为1/3。
六、8÷118÷11=0.7272727272……由于数字序列72一直重复出现,因此8÷11可以表示为8/11。
七、7÷127÷12=0.58333333333……由于数字序列58三位数一直重复出现,因此7÷12可以表示为7/12。
八、3÷113÷11=0.2727272727……由于数字序列27一直重复出现,因此3÷11可以表示为3/11。
九、2÷72÷7=0.285714285714……由于数字序列285714一直重复出现,因此2÷7可以表示为2/7。
十、5÷85÷8=0.625由于数字序列没有重复出现,因此5÷8不能表示为有限小数或循环小数。
商是循环小数的小数除法竖式计算题
商是循环小数的小数除法竖式计算题在数学的海洋中,小数除法是一个重要的概念。
当我们在进行小数除法计算时,有时会遇到一种特殊的情况,那就是商是一个循环小数。
循环小数是一种特殊的小数,它的数字循环出现在小数点后的一定位数上。
这种小数的出现,是由于被除数和除数之间存在特定的关系。
首先,让我们来了解一下什么是循环小数。
例如,1除以3得到的商是0.333...,这个数字序列中的3是无限循环的,因此它是一个循环小数。
类似的,1除以7得到的商是0.,这个数字序列中的也是无限循环的。
在竖式计算中,如何处理这种情况呢?当我们在进行除法计算时,如果发现余数始终不能为0,而且被除数和除数的比例是固定的,那么商就可能是循环小数。
此时,我们需要在竖式计算中特别注意。
例如,我们尝试计算14.4除以2.7:markdown1) 14.4 / 2.7 = 5.3333可以看到,得到的商是一个循环小数5.333...。
这告诉我们,14.4不能被2.7整除,余数为0.3。
再比如,我们尝试计算8.4除以2.1:markdown2) 8.4 / 2.1 = 4这次,我们得到了一个整数4,余数为0。
这是因为8.4可以被2.1整除。
通过以上的例子,我们可以看到,当我们在进行竖式计算时,如果发现余数始终不能为0,而且被除数和除数的比例是固定的,那么商就可能是循环小数。
此时,我们需要特别注意,并正确地表示出商是小数的情况。
总的来说,循环小数的出现是由于被除数和除数之间的特殊关系。
在竖式计算中,我们需要仔细观察余数的变化,从而判断出商是否为循环小数。
通过这种方式,我们可以更准确地表示出小数除法的结果。
在数学中,小数除法是一种基础的运算,但在实际计算过程中,有时我们会遇到商是循环小数的情况。
这种情况在竖式计算题中尤为常见,因此,理解和掌握如何进行这样的计算对于提高数学技能至关重要。
我们需要理解什么是循环小数。
循环小数是一种小数,它的小数点后某一位或几位数字不断重复出现。
小数除法竖式专项练习130题(有答案)
小数除法竖式专项练习130题(有答案)小数除法竖式专项练习130题(有答案)(1)720.8÷6.8=(2)50.96÷6.5=(3)6.27÷3.5= (保留两位小数)(4)10.471÷3.7=(5)8.45÷2.4=(6)28.65÷1.5= (8)342÷3.8= (9)3.12÷0.024= (10)2.772÷2.1= (11)111.6÷9= (12)0.448÷32= (13)17.6÷18=(15)2.31÷2.2=(16)7.891÷0.13=(17)50.96÷6.5=(18)0.8576÷0.32=(19)15÷74=(20)6.27÷3.5≈(商精确到0.01)(21)10.08÷0.65≈(商精确到0.01)(22)3.6÷0.27=(23)15.6÷24=(24)2.1÷0.56=(25)1731.2÷5.41=;(26)2.07÷0.36=(27)99.5÷9.9=(28)3.26÷3.1≈(商精确到0.1)(29)2.052÷7.2≈(商精确到0.01)(30)6.912÷3.6=(31)13.52÷13=(32)109.2÷0.42=(33)8÷0.9≈(保留一位小数)(35)15.75÷2.1=(36)81.9÷39= (37)3.684÷0.12=(38)28.56÷0.51=;(39)230÷0.46=(40)5.586÷0.72≈(结果保留两位小数)(41)91.2÷57=(42)0.544÷0.16=(43)5.06÷2.2=(44)2.888÷0.76=;(45)2.091÷1.02=(46)1.5÷0.045=(47)18.9÷2.7= ;(48)70.7÷33= (用循环小数表示)(49)0.732÷1.7≈(保留一位小数)(50)7.82÷1.25= (51)12.96÷12=(52)3÷1.1≈(保留一位小数)(53)6.4÷37≈(保留两位小数)(54)0.782÷0.23=(55)34÷11≈(保留两位小数)(56)7.65÷0.85=(57)1.26÷0.28=(58)5.4÷0.36=(59)9.52÷1.2= (保留两位小数)(60)27÷0.18=(61)7.23÷6.5= (商精确到百分位);(62)83÷4.5= (商用循环小数表示).(63)23÷24= (保留两位小数)(64)9.8÷1.2= (保留整数)(65)0.77÷0.13= (精确到十分位)(66)29.29÷29=,(67)111÷0.37=,(68)24÷96=(69)4.05÷45=(69)34.17÷1.7=(70)48÷1.25=(72)103÷6= (商用循环小数表示)(73)7.8÷75=(74)1.17÷0.6=.(75)8.96÷0.56=(76)20.15÷0.025=(77)1.71÷4.5= (79)9.73÷2.7≈(商保留两位小数)(80)3.598÷0.9≈(精确到十分位)(81)1.25÷0.25=(82)78.6÷11= (用循环小数表示)(83)5.63÷7.8≈(保留两位小数)(84)0.7÷0.5=;(86)38.18÷2.3= (87)0.1196÷0.23= (88)5.1÷0.17= (89)0.56÷1.4= (90)36.4÷2.6= (91)16.8÷0.07= (93)72.2÷0.95=(94)1.25÷0.25=(95)8.4÷0.56=;(96)8.54÷0.7=(97)78.6÷11= (商用循环小数表示);(98)5.63÷7.8= (得数保留两位小数).(100)2.7÷0.36= (101)88.4÷1.7= (102)5.24÷0.08= (103)46÷2.5= (104)15.5÷0.27= (105)58.6÷24 = (107)11.04÷0.46= (108)17.48÷3.8= (109)6.48÷0.06= (110)1.75÷0.7= (111)96.72÷2.4= (112)32.4÷3.6=9;(113)45÷18=(114)10.44÷0.072=.(115)14.2÷11= (用循环小数表示)(116)43.4÷31=(117)29.7÷11=(118)39.6÷12=(119)7.28÷13= (120)63÷15=(121)21.28÷7=(122)4.692÷2.3=(123)62.13÷0.57=(124)35÷74= (商用循环小数表示)(125)5.26÷1.6≈(结果保留两位小数)(126)78÷5=(127)89÷25= (128)16.64÷64= (129)8÷125= (130)37.8÷2.7= (132)①53.04÷26 ②51.3÷0.27③8.4÷0.24④628.5÷0.15.参考答案:(1)720.8÷6.8=106;(2)50.96÷6.5=7.84;(3)6.27÷3.5≈1.79.(4)10.471÷3.7=2.83 (5)8.45÷2.4=3.4≈3.43 (6)28.65÷1.5=19.1;(7)0.03÷0.12=0.250.250.12,(8)342÷3.8=90903 8,(9)3.12÷0.024=130;(10)2.772÷2.1=1.32;(11)111.6÷9=12.4;(12)0.448÷32=0.014;(13)17.6÷18=0.9;(14)9.4÷11=(15)2.31÷2.2=1.05 (16)7.891÷0.13=60.7.(17)50.96÷6.5=7.84;(18)0.8576÷0.32=2.68;(19)15÷74=0.22;(20)6.27÷3.5≈1.79 (21)10.08÷0.65≈1.51;(22)3.6÷0.27=13.;(23)15.6÷24=0.65;0.6524;(24)2.1÷0.56=3.75 (25)1731.2÷5.41=320;(26)2.07÷0.36=5.75;(27)99.5÷9.9=10..(28)3.26÷3.1≈(商精确到0.1)3.26÷3.1≈1.1(29)2.052÷7.2≈0.29(30)6.912÷3.6=1.92(31)13.52÷13=1.04;(32)109.2÷0.42=260;(33)8÷0.9≈8.9;;(35)15.75÷2.1=7.5.(36)81.9÷39=2.1;2.139;(37)3.684÷0.12=30.7;(38)28.56÷0.51=56;(39)230÷0.46=500;(40)5.586÷0.72≈7.76(结果保留两位小数)(41)91.2÷57=1.6(42)0.544÷0.16=3.4(43)5.06÷2.2=2.3,2.322;(44)28.2.888÷0.76=3.8;(45)2.091÷1.02=2.05,2.051.02;(46)1.5÷0.045=33.,33.330.045(47)18.9÷2.7=7;(48)70.7÷33=2.1(用循环小数表示)2.1414233(49)0.732÷1.7≈0.4(保留一位小数)(50)7.82÷1.25=6.256(51)12.96÷12=1.08;(52)3÷1.1≈2.7(保留一位小数)(53)6.4÷37≈0.17(保留两位小数)(54)0.782÷0.23=3.4,(55)34÷11≈3.09(保留两位小数)3.090(56)7.65÷0.85=9(57)1.26÷0.28=4.5;(58)5.4÷0.36=15;(59)9.52÷1.2≈7.93;(60)27÷0.18=150.(61)7.23÷6.5≈1.11 (62)83÷4.5=18.(63)23÷24≈0.96;0.95824;(64)9.8÷1.2≈8;8.11.2;(65)8.68÷8=1.085,;(66)29.29÷29=1.01,(67)111÷0.37=300,;(68)24÷96=0.25,(69)4.05÷45=0.09;(69)34.17÷1.7=20.1;(70)48÷1.25=38.4 (71)25.3÷0.88=28.75 (72)103÷6=17.1.(73)7.8÷75=0.104 (74)1.17÷0.6=1.95 (75)8.96÷0.56=16 (76)20.15÷0.025=806 (77)1.71÷4.5=0.38 (78)5.94÷0.55=10.8 (79)9.73÷2.7≈3.60 (80)3.598÷0.9≈4.0(81)1.25÷0.25=5;(82)78.6÷11=7.1.(用循环小数表示)(83)5.63÷7.8≈0.72(保留两位小数)(84)0.7÷0.5=1.4;(85)0.972÷1.2=0.81(86)38.18÷2.3=16.6;(87)0.1196÷0.23=0.52;(88)5.1÷0.17=30;(89)0.56÷1.4=0.4;(90)36.4÷2.6=14 (91)16.8÷0.07=240;(92)17.5÷0.35=50;(93)72.2÷0.95=76(94)1.25÷0.25=5(95)8.4÷0.56=15 (96)8.54÷0.7=12.2 (97)78.6÷11=7.1(98)5.63÷7.8≈0.72 (99)3÷1.2=2.5,(100)2.7÷0.36=75,(101)88.4÷1.7=52(102)5.24÷0.08=65.5;(103)46÷2.5=18.4;(104)15.5÷O.27≈57.4(保留一位小数.)(105)58.6÷24≈2.4(保留一位小数.)(106)36.83÷29=1.27;(107)11.04÷0.46=24;(108)17.48÷3.8=4.6;(109)6.48÷0.06=108 (110)1.75÷0.7=2.5;(111)96.72÷2.4=40.3;(112)32.4÷3.6=9;(113)45÷18=2.5 (114)10.44÷0.072=145 (115)14.2÷11=1.2(116)43.4÷31=1.4;(117)29.7÷11=2.7;(118)39.6÷12=3.3;(119)7.28÷13=0.56;(120)63÷15=4.2;(121)21.28÷7=3.04;(122)4.692÷2.3=2.04,(123)62.13÷0.57=109,(124)35÷74=0.42(商用循环小数表示)0.47294 (125)5.26÷1.6≈3.29(结果保留两位小数)(126)78÷5=15.6(127)89÷25=3.56(128)16.64÷64=0.26(129)8÷125=0.064(130)37.8÷2.7=14;(131)47.04÷5.6=8.4(132)。
小数除法计算题道口算道竖式道含答案解析
小数除法计算题500道(口算300道+竖式200道)含答案一.口算题(共50小题)1.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= 1.8×0.4×0.25=2.直接写出得数.2.1÷0.7=2÷5=1÷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=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=0.74×11= 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=0.4×2.7×25=5.直接写得数.6.3÷0.3= 1.8×0.5=25.1+4.9= 2.5×0.5×4=6.直接写出得数.0.9﹣0.89= 1.07+8.3= 3.6÷10=6.4÷0.2=100×1.5=8.1+9= 4.5×0.2=11﹣3.9=7.直接写得数.5.6÷0.8=6.82﹣5.2= 2.5×0.04= 1﹣0.5+0.5= 9.15÷0.3= 17.2÷0.86=1.8÷0.1=12.5×0.8×0=8.直接写得数 9.直接写得数. 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= 1.25×4= 1.6÷0.4= 0.54÷6= 5.6÷7= 11.直接写得数. 5.09÷10= 12.5×0.8= 0.5÷0.25= 45.6÷1= 32.1×0.2= 0.25×6= 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= 0.2×25.4= 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= 0.25×4= 0.56÷28=36÷0.9=0.64+0.8=0.72×3=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=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=4.12×2=6.3÷0.9= 1.53+2.4= 4.8×0.5= 6.4÷80=40×0.41=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=1÷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=0.3×2=0.3÷0.2=0.7×0.9=0÷7÷3= 2.4×5= 4.9×0=2×0.45×5=17.口算我最棒.0.64÷1.6= 1.4×0.5=0.72÷0.9=10.9﹣8.9=2.7+7.2=0÷1.5= 2.7×0.3=24÷0.3=4.3+2.7=200×0.07=0.25×4.9=4÷0.8= 18.直接写得数0.8÷10=25+8=187÷1000=0÷58=237﹣9=257+0=0×0.008=0.001×100=6.0805×1000=24×5=19.直接写得数.0.63÷9= 5.4÷1.45=0×4.65= 3.5÷0.7=1÷0.25=4×0.5=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=1÷0.25=6.2÷0.62﹣1= 0.75÷1.5=0.2÷4=0.21×4= 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=1÷0.25=8÷0.8=10÷4=0.4×0.8=0.48÷0.8=0.35×4=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=0.125×80=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= 0.25×4=12.5×0.8=0.2×50=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÷0.13=99×1.01=13.5﹣2.8﹣7.2=25×0.32×125=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÷(0.8×9)=40×0.25=0÷4.8= 2.9÷2.9=0.3×0.6=0.07×50=100×0.07=22.1×1= 28.口算0.02×0.1=12﹣4.3=36÷0.01=0.8×0.125= 2.3+0.8=0.36÷0.4÷9=29.口算.3.6÷1.2=4.4÷4= 4.8÷0.4=1÷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=0.07×10=3﹣1.9=1.2×0.1=51÷0.3= 4.3+15.37=2.9×10.02≈12.1÷3.9≈6÷0.58≈32.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=1÷0.25=0.78÷6= 2.4÷24=6.6÷0.6=5÷0.5=34÷0.2=0.8×7=8×0.6=70×0.12=34.直接算出得数.2.1÷2=3.8+1.02=7.5×0.4=2x﹣0.7x=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=0.25×4=0.21÷7= 5.6÷7= 1.2×5= 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=0.56×100= 5.35+2.5=0.625×100=5﹣2.1=359+402=18.6﹣7=8.07×10= 3.5+0.9= 1.2+0.08=4×(25×14)= 7.34×0= 3.31+1.2=25×4÷25×4=0.25+0.2+0.75= 39.口算0.42÷0.6=5×0.6= 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= 2.5×4=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=0×5.8=4×8×0.25= 41.口算.2.4÷2=48÷0.6=0.24÷0.2= 4.8÷6= 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=0.36÷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= 3.3+5.6=0.25+5.75=5.3+50.7=0.4﹣0.35=1﹣0.04=8+50.28=0.9﹣0.7=10﹣9.9=8.6×100=148.3÷100= 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=1÷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= 0.26×1000=24×99+24=38﹣25+12﹣25=500÷100×1000=二.竖式计算(共50小题)1.竖式计算.0.51÷0.5=98÷5.6=20.4÷1.7=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÷0.56≈3.列竖式计算.69.02÷3.4 26.8×0.35 46.8÷3.4(保留一位小数)4.列竖式计算.2.05÷25 0.13÷0.17(商精确到百分位)4.2÷0.28 4.2÷1.32(得数保留三位小数)5.用竖式计算.117.3÷0.46 24×0.37 40.32÷l.68.6.竖式计算2.1÷0.7= 7÷0.35=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) 2.64×1.09=(得数保留两位小数)6.3÷0.125=0.84×1.65=9.列竖式计算.(后两题得数保留两位小数)33.6÷568.96÷0.287.12÷0.22 4.13÷14.10.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÷7.8≈数保留两位小数)28.28÷0.4=*0.303÷5=13.列竖式计算(带★的保留两位小数)★1.57÷3.9 ★0.58×0.24 70.7÷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≈0.65×3.84≈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÷0.032 2.78×1.85.63÷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)18.用竖式计算(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②、④题验算)①50.96÷6.5 ②9.25÷3.7= ③15÷74 ④6.72÷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:70.3×3.6=5.06÷2.2=22.用竖式计算(带*得数保留两位小数)2.6×0.25 29.9÷0.46*4.65÷1.3.23.列竖式计算(除不尽的保留两位小数)①24.6÷0.16;②13.9÷6;③0.325÷1.5;④6.24÷0.8;⑤18.3÷4;⑥19.2÷6.24.用竖式计算,并指出哪些是循环小数.7.05÷0.94 1.71÷3.84.83÷0.75.7÷938.2÷2.7 2.16÷181.8÷0.25 3.7÷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)26.用竖式计算21.45÷15;49.04÷8;217.6÷34;11.7÷36; 1.69÷26;54.81÷27.27.将下列式子的得数保留两位小数①25.32÷0.15 ②1.03÷1.2③1.07÷9.2④9.45÷0.32 ⑤13.51÷0.13 ⑥17.96÷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=0.764×1.2≈52.92÷0.27=8÷1.28=15.36÷12=29.列竖式计算:0.195÷0.13 3.6÷0.8 76.76÷0.766÷2.4 7.085÷0.65 9.72÷0.27.30.竖式计算.(1)0.38×0.23(2)5.79×3.6(3)4.6×0.25(4)6÷24(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)4.7×0.59.31.计算下面各题,并用乘法验算(1)15.6÷12 (2)328÷16 (3)1.35÷27(4)0.646÷19.32.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÷27 1.35÷1537.5÷628.6÷1120.4÷24 3.64÷52.34.竖式计算0.448÷32=14.3+6.7= 3.8×0.26=11.32﹣8.95= 35.用竖式计算1.26÷1.8=64×5.04=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5.02×4.8= 1.35×320=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÷42 7.79÷95★6.3÷0.427÷0.35 0.14÷0.08 42÷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÷12 0.12÷0.25 7÷0.35 11.62÷913÷11 30.1÷33 19÷12 5.6÷0.07.42.竖式计算30.6÷45 4.06÷0.58※54.6÷0.91.43.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÷1.6 5.95÷27.6(得数保留两位小数)46.用竖式计算.3.38÷18 30.9×2.7 5.95÷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÷0.25 1.8÷12 7.2÷1.1.50.用竖式计算.7.02×1.3 29.83÷9.5 0.54÷3.6小数除法计算题(口算300道+竖式200道)答案一.口算题(共50小题)1.【解答】解:4.8÷0.8=67.5﹣4.5=30.75÷15=0.05 3.5×0.4=1.4 10÷0.01=100010﹣2.05=7.950.6×1.5=0.94÷0.25=16 1.36+2.87+3.64=7.87 1.8×0.4×0.25=0.182.【解答】解:2.1÷0.7=32÷5=0.41÷0.2=57÷8=0.875 5.3÷0.53=10 0.1÷0.01=100.25×40=10 6.5﹣5.6=0.9 1.26÷0.6=2.10.54÷6=0.09 3.【解答】解30.2÷2=15.10.01÷0.5=0.020.72÷8=0.09 4.8÷0.06=806.4+3.6=101÷3=0.10﹣1.55=8.45 1.25×8=104.【解答】解:0.9÷0.03=307.2﹣2=5.20.05×2=0.10.74×11=8.147.2÷40=0.180.25×4÷0.25×4=16 3.1÷3.1=1 1.32+8﹣1.32+8=166.25﹣0.87+0.13=5.510.4× 2.7×25=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=0.01 1.07+8.3=9.37 3.6÷10=0.36 100×1.5=1508.1+9=17.1 4.5×0.2=0.911﹣3.9=7.1 7.【解答】解:5.6÷0.8=76.82﹣5.2=1.62 2.5×0.04=0.11﹣0.5+0.5=1 9.15÷0.3=30.517.2÷0.86=20 1.8÷0.1=1812.5×0.8×0=0 8.【解答】解:1.4×100=1402.80÷10=0.28 2.4÷100=0.0240.33×1000=330 90÷6=150.025×100=2.590÷100=0.90.32+1.98=2.3 14.3+5.7=209×99+9=9009.【解答】解:10÷0.01=10000.22+0.8=1.0210﹣2.05=7.954÷0.25=160÷19.8=00.2×0.05=0.01 1.36+3.64=50.4×0.25=0.1 10.【解答】解:0.25÷0.5=0.50.32÷0.04=81.25×4=51.6÷0.4=40.54÷6=0.09 5.6÷7=0.8 11.【解答】解:5.09÷10=0.50912.5×0.8=100.5÷0.25=245.6÷1=45.632.1×0.2=6.420.25×6=1.50.4×0.5=0.20.54÷0.9=0.610.2÷0.01=102012.5×0.8=1012.【解答】解:4÷5=0.8 1.8÷0.03=6075÷2.5=300.2×25.4=5.08 3.6+4.4=810﹣5.2=4.8 3.4×0.2=0.687.8÷6=1.3 13.【解答】解:3.6÷0.3=12 6.3÷7=0.9 5.6×100=5600.25×4=10.56÷28=0.0236÷0.9=400.64+0.8=1.440.72×3=2.161.2×20=247÷5=1.4 6.12÷0.5=12.24 2.9÷5÷0.2=2.9 14.【解答】解:3.4÷2=1.7 2.7÷0.3=90.42÷6=0.074.12×2=8.24 6.3÷0.9=7 1.53+2.4=3.93 4.8×0.5=2.4 6.4÷80=0.08 40×0.41=16.430.9×9=278.110×4.1=41 4.6÷0.5=9.2 15.【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=1 1.25×4=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=0 2.4×5=1.2 4.9×0=02×0.45×5=4.517.【解答】解:0.64÷1.6=0.4 1.4×0.5=0.70.72÷0.9=0.810.9﹣8.9=22.7+7.2=9.90÷1.5=0 2.7×0.3=0.8124÷0.3=804.3+2.7=7200×0.07=140.25×4.9=1.2254÷0.8=518.【解答】解:0.8÷10=0.825+8=33187÷1000=0.1870÷58=0237﹣9=226257+0=2570×0.008=00.001×100=0.1 6.0805×1000=6080.524×5=12019.【解答】解:0.63÷9=0.07 5.4÷1.45≈3.720×4.65=0 3.5÷0.7=51÷0.25=44×0.5=20.1÷0.05=2 3.3÷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=2.1 3.6÷0.2=180.72÷90=0.0081.1×0.8=0.880.56+4.44=5 1.25×5×8=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=91÷0.25=4 6.2÷0.62﹣1=90.75÷1.5=0.50.2÷4=0.050.21×4=0.841.2×60=725+3.2÷0.8=922.【解答】解:0.72÷0.9=0.823.7+2.63=26.33 4.8÷0.4=120.5÷2=0.25 6.5﹣5.6=0.91÷0.25=48÷0.8=1010÷4=2.5 0.4×0.8=0.320.48÷0.8=0.60.35×4=1.40.3÷0.15=2 23.【解答】解:1.2÷0.4=32÷8=0.254÷0.5=80.72÷4=0.180÷5.32=0 3.6+1.8=5.41﹣0.73=0.270.24÷0.6=0.4 6.4÷1.6=40.125×80=100.5×0.8=0.413.2÷0.6=22 24.【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=0.450.25×4=112.5×0.8=100.2×50=100÷3.68=00.3×0.2=0.06 25.【解答】解:0.56÷0.7=0.80.6+0.65=1.25 3.9÷1.3=312÷0.03=4005.2÷0.13=4099×1.01=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=8 1.25×8=10 99÷0.9=11025÷0.05=50088÷0.008=110001÷2.5=0.4 27.【解答】解:0.64÷0.32=20.7×1.2=0.847.2÷(0.8×9)=140×0.25=100÷4.8=02.9÷2.9=10.3×0.6=0.180.07×50=3.5100×0.07=722.1×1=22.128.【解答】解:0.02×0.1=0.00212﹣4.3=7.736÷0.01=36000.8×0.125=0.12.3+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=121÷0.25=430.【解答】解:6.4÷8=0.89.8÷0.14=70 4.8÷16=0.30.63÷9=0.07 8.7÷29=0.30.99÷9.9=0.1 5.5÷0.11=5013.8÷6.9=2 31.【解答】解:0.56÷8=0.070.07×10=0.73﹣1.9=1.11.2×0.1=0.1251÷0.3=170 4.3+15.37=19.672.9×10.02≈3012.1÷3.9≈36÷0.58≈1032.【解答】解:3.6÷3=1.27.8÷6=1.39.9÷9=1.156.7÷7=8.14.8÷4=1.2 3.9÷13=0.3 3.6÷12=0.38.1÷27=0.30.04÷2=0.020.88÷4=0.22 1.25÷5=0.257.5÷0.05=150 33.【解答】解:1÷0.25=40.78÷6=0.13 2.4÷24=0.16.6÷0.6=115÷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=1.3x10÷8=1.250.8×0.6=0.483.2×0.5=1.69.6÷0.06=1603.57÷0.7=5.14.5+0.76=5.2635.【解答】解:22.4÷4=5.60.25×4=10.21÷7=0.03 5.6÷7=0.8 1.2×5=6 42÷3=14 6.12÷0.6=10.20.54÷6=0.0938.5÷5=7.724÷0.8=30 36.【解答】解:1.6÷0.4=47.2÷8=0.9 4.2÷0.01=4202﹣3.6÷1.8=04÷5=0.8 4.6÷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=0.2 6.8÷4=1.70.72÷12=0.06 0.72÷4=0.189.6÷6=1.6 5.2÷13=0.412.5÷5=2.50.12÷5=0.024 38.【解答】解:56÷100=0.56 1.29﹣0.29=10.56×100=56 5.35+2.5=7.850.625×100=62.55﹣2.1=2.9359+402=76118.6﹣7=11.68.07×10=80.7 3.5+0.9=4.4 1.2+0.08=1.284×(25×14)=1400 7.34×0=0 3.31+1.2=4.5125×4÷25×4=160.25+0.2+0.75=1.2 39.【解答】解:0.42÷0.6=0.75×0.6=3 2.4÷0.24=10 1.25×2.3×8=237.8+1.2=910÷0.1=1000.1×0.1=0.01 2.5﹣2.5×0.4=1.5 40.【解答】解:10﹣9.9=0.10.67+0.3=0.978.9×100=890 2.5×4=108÷16=0.50.9×60=54 1.04÷2=0.529.1÷7=1.31.5×8=120.39÷39=0.010.25÷8=0.031250.05×300=150.45÷9=0.057.2÷9=0.80×5.8=04×8×0.25=8 41.【解答】解:2.4÷2=1.248÷0.6=800.24÷0.2=1.2 4.8÷6=0.82.4÷0.2=12 4.8÷0.6=89.6÷0.3=3296÷3=3242.【解答】解:16÷5=3.222÷4=5.548÷100=0.4812.6÷3=4.2 6.06÷6=1.0135÷70=0.595÷5=19 1.3×4=5.212.6÷0.6=21 1.8÷6=0.3 43.【解答】解:0.75÷0.5=1.5 1.6÷0.4=47÷3.5=216.8÷0.4=42 2.8÷0.28=100.5÷0.25=244.【解答】解:5.74÷10=0.574 4.2÷0.07=600.16×4=0.640.4÷0.8=0.5 1.2×5=60.64÷2=0.320.56÷0.7=0.80.6+0.65=1.25 3.9÷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÷8=0.12(2)0.08÷0.01=8(3)0.2÷0.05=4(4)0.36÷0.18=2(5)5.1÷1.7=3(6)0.54÷0.6=0.9(7)4.8÷0.24=20(8)10﹣0.92=0.08(9)0.9÷45=0.02(10)2.5×4÷2.5×4=1647.【解答】解:2.5×4=1010÷0.1=100 2.8÷0.4=7 4.5÷0.15=307.2÷0.9=8 1.5×6=915÷0.5=305÷2=2.5 1.2÷0.03=40 1.3×3=3.9 48.【解答】解:0.3+5.7=61﹣0.6=0.4 3.3+5.6=8.90.25+5.75=65.3+50.7=560.4﹣0.35=0.051﹣0.04=0.968+50.28=58.28 0.9﹣0.7=0.210﹣9.9=0.18.6×100=860148.3÷100=1.48349.【解答】解:3.6÷1.2=30.72÷0.9=0.8 2.6÷13=0.24.8÷0.4=124.4÷4=1.10.78÷6=0.137.2÷0.4=181÷0.25=4 7.1×0.4=2.84 4.5÷0.15=301﹣0.07=0.930.42÷0.7=0.6 50.【解答】解:0.29÷100=0.00295÷1000=0.00519+0÷19=19423﹣(100+23)=300170×100=17000320÷100=3.290﹣26﹣13=510.56×100÷1000=0.0560.26×1000=26024×99+24=240038﹣25+12﹣25=0500÷100×1000=5000二.竖式计算题(共50小题)1.【解答】解:0.51÷0.5=1.02 98÷5.6=1520.4÷1.7=122.【解答】解:1.092÷0.42=2.6★210÷1.4=1508.9÷0.56≈15.893.【解答】解:69.02÷3.4=20.3 26.8×0.35=9.3846.8÷3.4≈13.84.【解答】解:2.05÷25=0.0820.13÷0.17≈0.764.2÷0.28=154.2÷1.32≈3.1825.【解答】解:117.3÷0.46=25524×0.37=8.8840.32÷l.68=246.【解答】解:2.1÷0.7=37÷0.35=207.2÷4=1.87.【解答】解:①2.76×24=66.24②12.6÷0.28=458.【解答】解:220.5÷15=14.72.64×1.09≈2.886.3÷0.125=50.40.84×1.65=1.3869.【解答】解:33.6÷56=0.68.96÷0.28=327.12÷0.22≈3.364.13÷14≈0.3010.【解答】解:(1)12.4÷4=3.1(2)45.9÷0.6=76.5(3)51÷0.3=170(4)52.8÷12=4.4(5)75.6÷0.18=420(6)9.6÷0.32=3011.【解答】解:13÷2.5=5.254.5÷0.16=340.6250.68÷0.95≈0.722.05×0.16=0.32878.6÷11=7.1(商用循环小数表示)6.21÷0.03=20712【解答】解:1.25÷0.25=578.6÷11=7.15.63÷7.8≈0.7228.28÷0.4=70.70.303÷5=0.060613.【解答】解:1.57÷3.9≈0.400.58×0.24≈0.1470.7÷33=2.114.【解答】解:★64.8÷1.8=36★8﹣6.69≈1.3;0.65×3.84≈2.515.【解答】解:9.4÷11=0.8 *144÷12=12 14.2÷11=1.216.【解答】解:75.6÷0.18=42025.6÷0.032=8005.63÷6.1≈0.9210÷3.3≈3.17.【解答】解:30÷7≈4.2960.9÷3.2≈19.025÷9.9≈318.【解答】解:(1)6.21÷0.03=207(2)10.8÷45=0.24(3)8.54÷0.7=12.2(4)72.9÷0.9=8119.【解答】解:①50.96÷6.5=7.84②9.25÷3.7=2.5③15÷74=0.22 ④6.72÷4.2=1.620.【解答】解:(1)1.25÷0.25=5(2)8.4÷0.56=15(3)8.54÷0.7=12.2(4)78.6÷11=7.121.【解答】解:4.5×0.18=0.812.346÷2.3=1.0270.3×3.6=253.085.06÷2.2=2.322.【解答】解:2.6×0.25=0.6529.9÷0.46=65*4.65÷1.3≈3.5823.【解答】解:①24.6÷0.16=153.75②13.9÷6≈2.32③0.325÷1.5≈0.22④6.24÷0.8=7.8⑤18.3÷4=4.575⑥19.2÷6=3.224.【解答】解:7.05÷0.94=7.54.83÷O.7=6.95.7÷9=0.638.2÷2.7=14.42.16÷18=0.121.8÷0.25=7.23.7÷2.2=1.625.【解答】解:(1)3.9÷0.26=15(2)9.35÷3.4≈2.8(3)0.17÷0.11≈1.(4)0.168÷0.7=0.24(5)4.05÷18≈0.23(6)4.68÷5.4≈26.【解答】解:21.45÷15=1.4349.04÷8=6.13217.6÷34=6.411.7÷36=0.3251.69÷26=0.6554.81÷27=2.0327.【解答】解:①25.32÷0.15=168.80②1.03÷1.2≈0.86③1.07÷9.2≈0.12④9.45÷0.32≈29.53⑤13.51÷0.13≈103.92⑥17.96÷0.36≈49.89 28.【解答】解:47.04÷5.6=8.43.28×2.7=8.8560.764×1.2≈0.9252.92÷0.27=1968÷1.28=6.2515.36÷12=1.2829.【解答】解:0.195÷0.13=1.53.6÷0.8=4.576.76÷0.76=1016÷2.4=2.5 7.085÷0.65=10.99.72÷0.27=3630.【解答】解:(1)0.38×0.23=0.0874(2)5.79×3.6=20.844(3)4.6×0.25=1.15(4)6÷24=0.25(5)52.95÷75=0.706(6)3.01÷7=0.43(7)4.95÷11=0.45(8)84.01÷31=2.71(9)0.646÷19=0.034(10)4.7×0.59=2.77331.【解答】解:(1)15.6÷12=1.3(2)328÷16=20.5(3)1.35÷27=0.05(4)0.646÷19=0.03432.【解答】解:45.15÷15=3.0552.65÷13=4.0515.75÷2.1=7.58.42÷0.6≈14.030.436÷0.2=2.189.25÷3.7=2.533.【解答】解:6.6÷4=1.6543.5÷29=1.518.9÷27=0.71.35÷15=0.0937.5÷6=6.2528.6÷11=2.620.4÷24=0.853.64÷52=0.0734.【解答】解:0.448÷32=0.01414.3+6.7=213.8×0.26=0.98811.32﹣8.95=2.3735.【解答】解:(1)1.26÷1.8=0.7(2)64×5.04=322.56 (3)43.5÷0.29=150(4)5.63÷0.13≈43.31(5)27.8÷2.5=11.12(6)9.8×0.75=7.35 36.【解答】解:5.02×4.8=24.0961.35×320=43226÷0.13=20048÷2.3≈20.8737.【解答】解:★0.756÷0.18═4.20.35×0.48=0.168★6.02﹣5.94=0.0838.【解答】解:96.6÷42=2.37.79÷95=0.082;★6.3÷0.42=157÷0.35=200.14÷0.08=1.7542÷8=5.2539.【解答】解:7.8÷75=0.1042.55÷2.5=1.022.5×1.04=2.640.【解答】解:3.5×10.8=37.880.93÷26.7≈3.01.42÷1.1=1.241.【解答】解:(1)43.8÷12=3.65(2)0.12÷0.25=0.48(3)7÷0.35=20(4)11.62÷9=1.29(5)13÷11=1.(6)30.1÷33=0.9(7)19÷12=1.58(8)5.6÷0.07=80 42.【解答】解:30.6÷45=0.68;4.06÷0.58=7;54.6÷0.91=60;43.【解答】解:0.58×0.08≈0.050.54÷0.018=3013.6÷3=44.【解答】解:(1)95.2÷28=3.4(2)46.8÷0.13=360(3)5.63÷7.8≈0.7245.【解答】解:0.73×2.15=1.5695 7.38÷1.6=4.61255.95÷27.6≈0.2246.【解答】解:3.38÷18=30.9×2.7=83.435.95÷27.6≈0.2247.【解答】解:4.83÷23=0.21 3.09÷1.5=2.060.14÷0.08=(验算)48.【解答】解:70÷5.6=12.5 227.8÷0.34=6707.525÷0.38≈19.80.49.【解答】解:8.65÷0.25=34.6 1.8÷12=0.157.2÷1.1≈6.5550.【解答】解:7.02×1.3=9.126 29.83÷9.5=3.140.54÷3.6=0.15。
五年级 小数除法 循环小数 60道 带答案
题⽬使⽤次数:987501.,那么⼩数点后⾯的第个数字是( )。
A.B.C.D.题⽬使⽤次数:883292.循环⼩数保留两位⼩数的是( )。
A.B.C.D.题⽬使⽤次数:676843.的商是( )A.纯循环⼩数B.混循环⼩数C.⽆限不循环⼩数题⽬使⽤次数:646984.的循环节是( )。
A.B.C.题⽬使⽤次数:615255.下⾯说法错误的是( )。
A.循环⼩数都是⽆限⼩数B.除数⼤于,商⼀定⼩于被除数(被除数不为零)C.梯形的⾯积等于平⾏四边形⾯积的⼀半D.⽤中位数表⽰⼀组数据的⼀般⽔平,⽐⽤平均数表⽰更合适题⽬使⽤次数:404296.两个数的商保留两位⼩数的近似数是,原来的商可能是( )。
1÷14=0.0714285714285⋯6207140.9˙0˙0.900.910.991.001÷32.323232 (32)32323231 3.54A.B.C.题⽬使⽤次数:311007.下⾯各数中,最⼤的是( )。
A.B.C.题⽬使⽤次数:304078.下列⼩数是⽆限⼩数的是( )。
A.B.C.D.题⽬使⽤次数:257119.下列各数中⼀定不是循环⼩数的数是( )。
A.B.C.D.题⽬使⽤次数:1930610.两数相除,当除不尽时,如果商⽤循环⼩数表⽰,那么要⽤( )。
A.⼤于号B.等号C.⼩于号题⽬使⽤次数:1852511.⽤循环⼩数的简便记法表⽰为( )。
A.B.C.3.5˙4˙3.54˙3.53˙0.74˙0.7˙4˙0.47˙3˙3.14141412.9120.9065.0303…0.6666⋯0.141414⋯2.1051054.3434343⋯6.33636⋯6.33˙6˙6.36˙3˙6.3˙题⽬使⽤次数:1580912.下列说法正确的是( )A.循环⼩数不是⽆限⼩数B.⽆限⼩数⼀定是循环⼩数C.⽆限⼩数不⼀定是循环⼩数题⽬使⽤次数:1571613.在、、、这四个数中,⽐⼤的数( )。
小数除法竖式专项练习130题(有答案)
小数除法竖式专项练习130题(有答案)(1)720.8÷6.8=(2)50.96÷6.5=(3)6.27÷3.5= (保留两位小数)(4)10.471÷3.7=(5)8.45÷2.4=(6)28.65÷1.5= (8)342÷3.8= (9)3.12÷0.024= (10)2.772÷2.1= (11)111.6÷9= (12)0.448÷32= (13)17.6÷18=(15)2.31÷2.2=(16)7.891÷0.13=(17)50.96÷6.5=(18)0.8576÷0.32=(19)15÷74=(20)6.27÷3.5≈(商精确到0.01)(21)10.08÷0.65≈(商精确到0.01)(22)3.6÷0.27=(23)15.6÷24=(24)2.1÷0.56=(25)1731.2÷5.41=;(26)2.07÷0.36=(27)99.5÷9.9=(28)3.26÷3.1≈(商精确到0.1)(29)2.052÷7.2≈(商精确到0.01)(30)6.912÷3.6=(31)13.52÷13=(32)109.2÷0.42=(33)8÷0.9≈(保留一位小数)(35)15.75÷2.1=(36)81.9÷39= (37)3.684÷0.12=(38)28.56÷0.51=;(39)230÷0.46=(40)5.586÷0.72≈(结果保留两位小数)(41)91.2÷57=(42)0.544÷0.16=(43)5.06÷2.2=(44)2.888÷0.76=;(45)2.091÷1.02=(46)1.5÷0.045=(47)18.9÷2.7= ;(48)70.7÷33= (用循环小数表示)(49)0.732÷1.7≈(保留一位小数)(50)7.82÷1.25= (51)12.96÷12=(52)3÷1.1≈(保留一位小数)(53)6.4÷37≈(保留两位小数)(54)0.782÷0.23=(55)34÷11≈(保留两位小数)(56)7.65÷0.85=(57)1.26÷0.28=(58)5.4÷0.36=(59)9.52÷1.2= (保留两位小数)(60)27÷0.18=(61)7.23÷6.5= (商精确到百分位);(62)83÷4.5= (商用循环小数表示).(63)23÷24= (保留两位小数)(64)9.8÷1.2= (保留整数)(65)0.77÷0.13= (精确到十分位)(66)29.29÷29=,(67)111÷0.37=,(68)24÷96=(69)4.05÷45=(69)34.17÷1.7=(70)48÷1.25=(72)103÷6= (商用循环小数表示)(73)7.8÷75=(74)1.17÷0.6=.(75)8.96÷0.56=(76)20.15÷0.025=(77)1.71÷4.5= (79)9.73÷2.7≈(商保留两位小数)(80)3.598÷0.9≈(精确到十分位)(81)1.25÷0.25=(82)78.6÷11= (用循环小数表示)(83)5.63÷7.8≈(保留两位小数)(84)0.7÷0.5=;(86)38.18÷2.3= (87)0.1196÷0.23= (88)5.1÷0.17= (89)0.56÷1.4= (90)36.4÷2.6= (91)16.8÷0.07= (93)72.2÷0.95=(94)1.25÷0.25=(95)8.4÷0.56=;(96)8.54÷0.7=(97)78.6÷11= (商用循环小数表示);(98)5.63÷7.8= (得数保留两位小数).(100)2.7÷0.36= (101)88.4÷1.7= (102)5.24÷0.08= (103)46÷2.5= (104)15.5÷0.27= (105)58.6÷24 = (107)11.04÷0.46= (108)17.48÷3.8= (109)6.48÷0.06= (110)1.75÷0.7= (111)96.72÷2.4= (112)32.4÷3.6=9;(113)45÷18=(114)10.44÷0.072=.(115)14.2÷11= (用循环小数表示)(116)43.4÷31=(117)29.7÷11=(118)39.6÷12=(119)7.28÷13= (120)63÷15=(121)21.28÷7=(122)4.692÷2.3=(123)62.13÷0.57=(124)35÷74= (商用循环小数表示)(125)5.26÷1.6≈(结果保留两位小数)(126)78÷5=(127)89÷25= (128)16.64÷64= (129)8÷125= (130)37.8÷2.7= (132)①53.04÷26 ②51.3÷0.27③8.4÷0.24④628.5÷0.15.参考答案:(1)720.8÷6.8=106;(2)50.96÷6.5=7.84;(3)6.27÷3.5≈1.79.(4)10.471÷3.7=2.83 (5)8.45÷2.4=3.4≈3.43 (6)28.65÷1.5=19.1;(7)0.03÷0.12=0.250.250.12,(8)342÷3.8=90903 8,(9)3.12÷0.024=130;(10)2.772÷2.1=1.32;(11)111.6÷9=12.4;(12)0.448÷32=0.014;(13)17.6÷18=0.9;(14)9.4÷11=(15)2.31÷2.2=1.05 (16)7.891÷0.13=60.7.(17)50.96÷6.5=7.84;(18)0.8576÷0.32=2.68;(19)15÷74=0.22;(20)6.27÷3.5≈1.79 (21)10.08÷0.65≈1.51;(22)3.6÷0.27=13.;(23)15.6÷24=0.65;0.6524;(24)2.1÷0.56=3.75 (25)1731.2÷5.41=320;(26)2.07÷0.36=5.75;(27)99.5÷9.9=10..(28)3.26÷3.1≈(商精确到0.1)3.26÷3.1≈1.1(29)2.052÷7.2≈0.29(30)6.912÷3.6=1.92(31)13.52÷13=1.04;(32)109.2÷0.42=260;(33)8÷0.9≈8.9;;(35)15.75÷2.1=7.5.(36)81.9÷39=2.1;2.139;(37)3.684÷0.12=30.7;(38)28.56÷0.51=56;(39)230÷0.46=500;(40)5.586÷0.72≈7.76(结果保留两位小数)(41)91.2÷57=1.6(42)0.544÷0.16=3.4(43)5.06÷2.2=2.3,2.322;(44)28.2.888÷0.76=3.8;(45)2.091÷1.02=2.05,2.051.02;(46)1.5÷0.045=33.,33.330.045(47)18.9÷2.7=7;(48)70.7÷33=2.1(用循环小数表示)2.1414233(49)0.732÷1.7≈0.4(保留一位小数)(50)7.82÷1.25=6.256(51)12.96÷12=1.08;(52)3÷1.1≈2.7(保留一位小数)(53)6.4÷37≈0.17(保留两位小数)(54)0.782÷0.23=3.4,(55)34÷11≈3.09(保留两位小数)3.090(56)7.65÷0.85=9(57)1.26÷0.28=4.5;(58)5.4÷0.36=15;(59)9.52÷1.2≈7.93;(60)27÷0.18=150.(61)7.23÷6.5≈1.11 (62)83÷4.5=18.(63)23÷24≈0.96;0.95824;(64)9.8÷1.2≈8;8.11.2;(65)8.68÷8=1.085,;(66)29.29÷29=1.01,(67)111÷0.37=300,;(68)24÷96=0.25,(69)4.05÷45=0.09;(69)34.17÷1.7=20.1;(70)48÷1.25=38.4 (71)25.3÷0.88=28.75 (72)103÷6=17.1.(73)7.8÷75=0.104 (74)1.17÷0.6=1.95 (75)8.96÷0.56=16 (76)20.15÷0.025=806 (77)1.71÷4.5=0.38 (78)5.94÷0.55=10.8 (79)9.73÷2.7≈3.60 (80)3.598÷0.9≈4.0(81)1.25÷0.25=5;(82)78.6÷11=7.1.(用循环小数表示)(83)5.63÷7.8≈0.72(保留两位小数)(84)0.7÷0.5=1.4;(85)0.972÷1.2=0.81(86)38.18÷2.3=16.6;(87)0.1196÷0.23=0.52;(88)5.1÷0.17=30;(89)0.56÷1.4=0.4;(90)36.4÷2.6=14 (91)16.8÷0.07=240;(92)17.5÷0.35=50;(93)72.2÷0.95=76(94)1.25÷0.25=5(95)8.4÷0.56=15 (96)8.54÷0.7=12.2 (97)78.6÷11=7.1(98)5.63÷7.8≈0.72 (99)3÷1.2=2.5,(100)2.7÷0.36=75,(101)88.4÷1.7=52(102)5.24÷0.08=65.5;(103)46÷2.5=18.4;(104)15.5÷O.27≈57.4(保留一位小数.)(105)58.6÷24≈2.4(保留一位小数.)(106)36.83÷29=1.27;(107)11.04÷0.46=24;(108)17.48÷3.8=4.6;(109)6.48÷0.06=108 (110)1.75÷0.7=2.5;(111)96.72÷2.4=40.3;(112)32.4÷3.6=9;(113)45÷18=2.5 (114)10.44÷0.072=145 (115)14.2÷11=1.2(116)43.4÷31=1.4;(117)29.7÷11=2.7;(118)39.6÷12=3.3;(119)7.28÷13=0.56;(120)63÷15=4.2;(121)21.28÷7=3.04;(122)4.692÷2.3=2.04,(123)62.13÷0.57=109,(124)35÷74=0.42(商用循环小数表示)0.47294 (125)5.26÷1.6≈3.29(结果保留两位小数)(126)78÷5=15.6(127)89÷25=3.56(128)16.64÷64=0.26(129)8÷125=0.064(130)37.8÷2.7=14;(131)47.04÷5.6=8.4(132)。
五上小数除法竖式计算题56500
10.1-3.3=
(商用循环小数)
10.75-12.5=(用乘法验算)
递等式计算(能简算的要简算)一
递等式计算(能简算的要简算)二
8.0584+7.6
五年级循环小数竖式题
五年级循环小数竖式题一、循环小数竖式题示例(一)简单的除法产生循环小数竖式题1. 题目- 计算2÷3。
2. 竖式计算过程- 首先进行竖式计算:0.66...3 ) 2.001 820182- 当用2除以3时,3×0 = 0,2 - 0=2,把2后面添0变成20,20÷3 = 6·s·s2,继续添0,20÷3又得6·s·s2,这样就会不断重复出现6,结果是0.66·s,写成循环小数的形式是0.6̇。
(二)稍复杂的除法产生循环小数竖式题1. 题目- 计算5÷7。
2. 竖式计算过程- 进行竖式计算:0.714285...7 ) 5.0000004 9107302820146056403550491- 5÷7时,7×0 = 0,5 - 0 = 5,添0为50,50÷7 = 7·s·s1,再添0,10÷7 = 1·s·s3,依次计算下去。
发现余数开始循环,结果是0.714285714285·s,写成循环小数的形式是0.7̇14285̇。
(三)循环小数除法竖式题1. 题目- 计算1÷3.3(结果保留两位小数)。
2. 竖式计算过程- 先将除数3.3变成整数,被除数和除数同时扩大10倍,变为10÷33。
0.3033 ) 10.009 910- 10÷33 = 0.3030·s,按照题目要求保留两位小数,根据四舍五入,结果是0.30。
五年级上册循环小数计算题除法竖式
五年级上册循环小数计算题除法竖式一、题目。
1. 2÷3解析:竖式计算:先写好除法竖式,2除以3,不够除,商0点上小数点,20除以3商6,3×6 = 18,20-18 = 2,继续除下去发现余数总是2,商就会不断重复出现6。
结果:2÷3 = 0.6̇。
2. 5÷6解析:竖式计算:5除以6,商0点小数点,50除以6商8,6×8 = 48,50 48=2,20除以6商3,6×3 = 18,20 18 = 2,余数不断重复为2,商就不断重复83。
结果:5÷6 = 0.83̇。
3. 1÷7解析:竖式计算:1除以7,商0点小数点,10除以7商1,7×1 = 7,10 7 = 3,30除以7商4,7×4 = 28,30 28 = 2,20除以7商2,7×2 = 14,20 14 = 6,60除以7商8,7×8 = 56,60 56 = 4,40除以7商5,7×5 = 35,40 35 = 5,50除以7商7,7×7 = 49,50 49 = 1,开始循环。
结果:1÷7 = 0.1̇42857̇。
4. 3÷11解析:竖式计算:3除以11,商0点小数点,30除以11商2,11×2 = 22,30 22 = 8,80除以11商7,11×7 = 77,80 77 = 3,余数开始循环。
结果:3÷11 = 0.2̇7。
5. 4÷9解析:竖式计算:4除以9,商0点小数点,40除以9商4,9×4 = 36,40 36 = 4,余数不断重复为4,商就不断重复4。
结果:4÷9 = 0.4̇。
6. 7÷12解析:竖式计算:7除以12,商0点小数点,70除以12商5,12×5 = 60,70 60 = 10,100除以12商8,12×8 = 96,100 96 = 4,40除以12商3,12×3 = 36,40 36 = 4,余数开始循环。
小数除法计算题500道含答案
小数除法计算题500道(口算300道+竖式200道)含答案一.口算题(共50小题)1.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= 1.8×0.4×0.25=2.直接写出得数.2.1÷0.7=2÷5=1÷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=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=0.74×11= 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=0.4×2.7×25=5.直接写得数.6.3÷0.3= 1.8×0.5=25.1+4.9= 2.5×0.5×4=6.直接写出得数.6.4÷0.2=0.9﹣0.89= 1.07+8.3= 3.6÷10= 100×1.5=8.1+9= 4.5×0.2=11﹣3.9=7.直接写得数.5.6÷0.8=6.82﹣5.2= 2.5×0.04=1﹣0.5+0.5= 9.15÷0.3=17.2÷0.86= 1.8÷0.1=12.5×0.8×0=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=9.直接写得数.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= 1.25×4=1.6÷0.4=0.54÷6= 5.6÷7=11.直接写得数.5.09÷10=12.5×0.8=0.5÷0.25=45.6÷1=32.1×0.2= 0.25×6=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=0.2×25.4=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=0.25×4=0.56÷28=36÷0.9=0.64+0.8=0.72×3=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=4.12×2=6.3÷0.9= 1.53+2.4= 4.8×0.5= 6.4÷80=40×0.41=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=1÷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=0.3×2=0.3÷0.2=0.7×0.9=0÷7÷3= 2.4×5= 4.9×0=2×0.45×5=17.口算我最棒.0.64÷1.6= 1.4×0.5=0.72÷0.9=10.9﹣8.9= 2.7+7.2=0÷1.5= 2.7×0.3=24÷0.3= 4.3+2.7=200×0.07=0.25×4.9=4÷0.8=18.直接写得数0.8÷10=25+8=187÷1000=0÷58=237﹣9=257+0=0×0.008=0.001×100= 6.0805×1000=24×5=19.直接写得数.0.63÷9= 5.4÷1.45=0×4.65= 3.5÷0.7= 1÷0.25=4×0.5=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=1÷0.25=6.2÷0.62﹣1= 0.75÷1.5=0.2÷4=0.21×4= 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=1÷0.25=8÷0.8=10÷4=0.4×0.8=0.48÷0.8=0.35×4=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=0.125×80=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= 0.25×4=12.5×0.8=0.2×50=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÷0.13=99×1.01=13.5﹣2.8﹣7.2=25×0.32×125=26.口算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÷(0.8×9)=40×0.25=0÷4.8= 2.9÷2.9=0.3×0.6=0.07×50=100×0.07=22.1×1=28.口算0.02×0.1=12﹣4.3=36÷0.01=0.8×0.125= 2.3+0.8=0.36÷0.4÷9=29.口算.3.6÷1.2=4.4÷4= 4.8÷0.4=1÷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=0.07×10=3﹣1.9=1.2×0.1=51÷0.3= 4.3+15.37=2.9×10.02≈12.1÷3.9≈6÷0.58≈32.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1÷0.25=0.78÷6= 2.4÷24=6.6÷0.6=5÷0.5=34÷0.2=0.8×7=8×0.6=70×0.12=34.直接算出得数.2.1÷2=3.8+1.02=7.5×0.4=2x﹣0.7x=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=0.25×4=0.21÷7= 5.6÷7= 1.2×5= 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=0.56×100= 5.35+2.5=0.625×100=5﹣2.1=359+402=18.6﹣7=8.07×10= 3.5+0.9= 1.2+0.08=4×(25×14)= 7.34×0= 3.31+1.2=25×4÷25×4=0.25+0.2+0.75=39.口算0.42÷0.6=5×0.6= 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= 2.5×4=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=0×5.8=4×8×0.25=41.口算.2.4÷2=48÷0.6=0.24÷0.2= 4.8÷6=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=0.36÷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= 3.3+5.6=0.25+5.75=5.3+50.7=0.4﹣0.35=1﹣0.04=8+50.28=0.9﹣0.7=10﹣9.9=8.6×100=148.3÷100=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=1÷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= 0.26×1000=24×99+24=38﹣25+12﹣25=500÷100×1000=二.竖式计算(共50小题)1.竖式计算.0.51÷0.5=98÷5.6=20.4÷1.7= 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÷0.56≈3.列竖式计算.69.02÷3.4 26.8×0.35 46.8÷3.4(保留一位小数)4.列竖式计算.2.05÷25 0.13÷0.17(商精确到百分位)4.2÷0.28 4.2÷1.32(得数保留三位小数)5.用竖式计算.117.3÷0.46 24×0.37 40.32÷l.68.6.竖式计算2.1÷0.7= 7÷0.35=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) 2.64×1.09=(得数保留两位小数)6.3÷0.125=0.84×1.65=9.列竖式计算.(后两题得数保留两位小数)33.6÷568.96÷0.287.12÷0.22 4.13÷14.10.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÷7.8≈数保留两位小数)28.28÷0.4=*0.303÷5=13.列竖式计算(带★的保留两位小数)★1.57÷3.9 ★0.58×0.24 70.7÷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≈0.65×3.84≈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÷0.032 2.78×1.85.63÷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)18.用竖式计算(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②、④题验算)①50.96÷6.5 ②9.25÷3.7= ③15÷74 ④6.72÷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:70.3×3.6=5.06÷2.2=22.用竖式计算(带*得数保留两位小数)2.6×0.25 29.9÷0.46*4.65÷1.3.23.列竖式计算(除不尽的保留两位小数)①24.6÷0.16;②13.9÷6;③0.325÷1.5;④6.24÷0.8;⑤18.3÷4;⑥19.2÷6.24.用竖式计算,并指出哪些是循环小数.7.05÷0.94 1.71÷3.84.83÷0.75.7÷938.2÷2.7 2.16÷181.8÷0.25 3.7÷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)26.用竖式计算21.45÷15;49.04÷8;217.6÷34;11.7÷36; 1.69÷26;54.81÷27.27.将下列式子的得数保留两位小数①25.32÷0.15 ②1.03÷1.2③1.07÷9.2④9.45÷0.32 ⑤13.51÷0.13 ⑥17.96÷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=0.764×1.2≈52.92÷0.27=8÷1.28=15.36÷12=29.列竖式计算:0.195÷0.13 3.6÷0.8 76.76÷0.766÷2.4 7.085÷0.65 9.72÷0.27.30.竖式计算.(1)0.38×0.23(2)5.79×3.6(3)4.6×0.25(4)6÷24(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)4.7×0.59.31.计算下面各题,并用乘法验算(1)15.6÷12 (2)328÷16 (3)1.35÷27(4)0.646÷19.32.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÷27 1.35÷1537.5÷628.6÷1120.4÷24 3.64÷52.34.竖式计算0.448÷32=14.3+6.7= 3.8×0.26=11.32﹣8.95=35.用竖式计算1.26÷1.8=64×5.04=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5.02×4.8= 1.35×320=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÷42 7.79÷95★6.3÷0.427÷0.35 0.14÷0.08 42÷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÷12 0.12÷0.25 7÷0.35 11.62÷913÷11 30.1÷33 19÷12 5.6÷0.07.42.竖式计算30.6÷45 4.06÷0.58※54.6÷0.91.43.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÷1.6 5.95÷27.6(得数保留两位小数)46.用竖式计算.3.38÷18 30.9×2.7 5.95÷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÷0.25 1.8÷12 7.2÷1.1.50.用竖式计算.7.02×1.3 29.83÷9.5 0.54÷3.6小数除法计算题(口算300道+竖式200道)答案一.口算题(共50小题)1.【解答】解:4.8÷0.8=67.5﹣4.5=30.75÷15=0.05 3.5×0.4=1.410÷0.01=100010﹣2.05=7.950.6×1.5=0.94÷0.25=161.36+2.87+3.64=7.87 1.8×0.4×0.25=0.182.【解答】解:2.1÷0.7=32÷5=0.41÷0.2=57÷8=0.875 5.3÷0.53=100.1÷0.01=100.25×40=10 6.5﹣5.6=0.9 1.26÷0.6=2.10.54÷6=0.09 3.【解答】解30.2÷2=15.10.01÷0.5=0.020.72÷8=0.09 4.8÷0.06=806.4+3.6=101÷3=0.10﹣1.55=8.45 1.25×8=104.【解答】解:0.9÷0.03=307.2﹣2=5.20.05×2=0.10.74×11=8.14 0.25×4÷0.25×4=16 3.1÷3.1=1 1.32+8﹣1.32+8=167.2÷40=0.18 6.25﹣0.87+0.13=5.510.4×2.7×25=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=0.01 1.07+8.3=9.37 3.6÷10=0.36 100×1.5=1508.1+9=17.1 4.5×0.2=0.911﹣3.9=7.17.【解答】解:5.6÷0.8=76.82﹣5.2=1.62 2.5×0.04=0.11﹣0.5+0.5=1 9.15÷0.3=30.517.2÷0.86=20 1.8÷0.1=1812.5×0.8×0=08.【解答】解:1.4×100=1402.80÷10=0.28 2.4÷100=0.0240.33×1000=330 90÷6=150.025×100=2.590÷100=0.90.32+1.98=2.3 14.3+5.7=209×99+9=9009.【解答】解:10÷0.01=10000.22+0.8=1.0210﹣2.05=7.954÷0.25=160÷19.8=00.2×0.05=0.01 1.36+3.64=50.4×0.25=0.110.【解答】解:0.25÷0.5=0.50.32÷0.04=81.25×4=51.6÷0.4=40.54÷6=0.095.6÷7=0.811.【解答】解:5.09÷10=0.50912.5×0.8=100.5÷0.25=245.6÷1=45.632.1×0.2=6.42 0.25×6=1.50.4×0.5=0.20.54÷0.9=0.610.2÷0.01=102012.5×0.8=10 12.【解答】解:4÷5=0.8 1.8÷0.03=6075÷2.5=300.2×25.4=5.083.6+4.4=810﹣5.2=4.8 3.4×0.2=0.687.8÷6=1.313.【解答】解:3.6÷0.3=12 6.3÷7=0.9 5.6×100=5600.25×4=10.56÷28=0.0236÷0.9=400.64+0.8=1.440.72×3=2.161.2×20=247÷5=1.4 6.12÷0.5=12.24 2.9÷5÷0.2=2.914.【解答】解:3.4÷2=1.7 2.7÷0.3=90.42÷6=0.074.12×2=8.246.3÷0.9=7 1.53+2.4=3.93 4.8×0.5=2.4 6.4÷80=0.0840×0.41=16.430.9×9=278.110×4.1=41 4.6÷0.5=9.215.【解答】解:0.25÷5=0.050.72÷0.9=0.8 3.145×100=314.57.2÷3.6=21÷50=0.0212.4÷4.1=30.01+0.99=17.6÷7.6=1 1.25×4=550﹣0÷2.5=50 16.【解答】解:0.35÷5=0.070.3×2=0.60.3÷0.2=1.50.7×0.9=0.630÷7÷3=0 2.4×5=1.2 4.9×0=02×0.45×5=4.517.【解答】解:0.64÷1.6=0.4 1.4×0.5=0.70.72÷0.9=0.810.9﹣8.9=22.7+7.2=9.90÷1.5=0 2.7×0.3=0.8124÷0.3=804.3+2.7=7200×0.07=140.25×4.9=1.2254÷0.8=518.【解答】解:0.8÷10=0.825+8=33187÷1000=0.1870÷58=0237﹣9=226257+0=2570×0.008=00.001×100=0.1 6.0805×1000=6080.524×5=12019.【解答】解:0.63÷9=0.07 5.4÷1.45≈3.720×4.65=0 3.5÷0.7=51÷0.25=44×0.5=20.1÷0.05=2 3.3÷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=2.1 3.6÷0.2=180.72÷90=0.0081.1×0.8=0.880.56+4.44=5 1.25×5×8=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=91÷0.25=46.2÷0.62﹣1=9 0.75÷1.5=0.50.2÷4=0.050.21×4=0.84 1.2×60=725+3.2÷0.8=922.【解答】解:0.72÷0.9=0.823.7+2.63=26.33 4.8÷0.4=120.5÷2=0.256.5﹣5.6=0.91÷0.25=48÷0.8=1010÷4=2.50.4×0.8=0.320.48÷0.8=0.60.35×4=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=0 3.6+1.8=5.41﹣0.73=0.270.24÷0.6=0.46.4÷1.6=40.125×80=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=0.45 0.25×4=112.5×0.8=100.2×50=100÷3.68=00.3×0.2=0.0625.【解答】解:0.56÷0.7=0.80.6+0.65=1.25 3.9÷1.3=312÷0.03=4005.2÷0.13=4099×1.01=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=8 1.25×8=1099÷0.9=11025÷0.05=50088÷0.008=110001÷2.5=0.427.【解答】解:0.64÷0.32=20.7×1.2=0.847.2÷(0.8×9)=140×0.25=100÷4.8=0 2.9÷2.9=10.3×0.6=0.180.07×50=3.5100×0.07=722.1×1=22.128.【解答】解:0.02×0.1=0.00212﹣4.3=7.736÷0.01=36000.8×0.125=0.12.3+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=121÷0.25=430.【解答】解:6.4÷8=0.89.8÷0.14=70 4.8÷16=0.30.63÷9=0.078.7÷29=0.30.99÷9.9=0.1 5.5÷0.11=5013.8÷6.9=231.【解答】解:0.56÷8=0.070.07×10=0.73﹣1.9=1.11.2×0.1=0.1251÷0.3=170 4.3+15.37=19.672.9×10.02≈3012.1÷3.9≈36÷0.58≈1032.【解答】解:3.6÷3=1.27.8÷6=1.39.9÷9=1.156.7÷7=8.14.8÷4=1.2 3.9÷13=0.3 3.6÷12=0.38.1÷27=0.30.04÷2=0.020.88÷4=0.22 1.25÷5=0.257.5÷0.05=15033.【解答】解:1÷0.25=40.78÷6=0.13 2.4÷24=0.16.6÷0.6=115÷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=1.3x10÷8=1.25 0.8×0.6=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=5.60.25×4=10.21÷7=0.03 5.6÷7=0.8 1.2×5=642÷3=14 6.12÷0.6=10.20.54÷6=0.0938.5÷5=7.724÷0.8=3036.【解答】解:1.6÷0.4=47.2÷8=0.9 4.2÷0.01=4202﹣3.6÷1.8=04÷5=0.8 4.6÷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=0.2 6.8÷4=1.70.72÷12=0.06 0.72÷4=0.189.6÷6=1.6 5.2÷13=0.412.5÷5=2.50.12÷5=0.02438.【解答】解:56÷100=0.56 1.29﹣0.29=10.56×100=56 5.35+2.5=7.850.625×100=62.55﹣2.1=2.9359+402=76118.6﹣7=11.68.07×10=80.7 3.5+0.9=4.4 1.2+0.08=1.284×(25×14)=1400 7.34×0=0 3.31+1.2=4.5125×4÷25×4=160.25+0.2+0.75=1.239.【解答】解:0.42÷0.6=0.75×0.6=3 2.4÷0.24=10 1.25×2.3×8=237.8+1.2=910÷0.1=1000.1×0.1=0.01 2.5﹣2.5×0.4=1.540.【解答】解:10﹣9.9=0.10.67+0.3=0.978.9×100=890 2.5×4=108÷16=0.50.9×60=54 1.04÷2=0.529.1÷7=1.31.5×8=120.39÷39=0.010.25÷8=0.031250.05×300=150.45÷9=0.057.2÷9=0.80×5.8=04×8×0.25=841.【解答】解:2.4÷2=1.248÷0.6=800.24÷0.2=1.2 4.8÷6=0.82.4÷0.2=12 4.8÷0.6=89.6÷0.3=3296÷3=3242.【解答】解:16÷5=3.222÷4=5.548÷100=0.4812.6÷3=4.2 6.06÷6=1.0135÷70=0.595÷5=19 1.3×4=5.212.6÷0.6=21 1.8÷6=0.343.【解答】解:0.75÷0.5=1.5 1.6÷0.4=47÷3.5=216.8÷0.4=42 2.8÷0.28=100.5÷0.25=244.【解答】解:5.74÷10=0.574 4.2÷0.07=600.16×4=0.640.4÷0.8=0.5 1.2×5=60.64÷2=0.320.56÷0.7=0.80.6+0.65=1.25 3.9÷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÷8=0.12(2)0.08÷0.01=8(3)0.2÷0.05=4(4)0.36÷0.18=2(5)5.1÷1.7=3(6)0.54÷0.6=0.9(7)4.8÷0.24=20(8)10﹣0.92=0.08(9)0.9÷45=0.02(10)2.5×4÷2.5×4=1647.【解答】解:2.5×4=1010÷0.1=100 2.8÷0.4=7 4.5÷0.15=307.2÷0.9=81.5×6=915÷0.5=305÷2=2.5 1.2÷0.03=40 1.3×3=3.948.【解答】解:0.3+5.7=61﹣0.6=0.4 3.3+5.6=8.90.25+5.75=65.3+50.7=560.4﹣0.35=0.051﹣0.04=0.968+50.28=58.280.9﹣0.7=0.210﹣9.9=0.18.6×100=860148.3÷100=1.48349.【解答】解:3.6÷1.2=30.72÷0.9=0.8 2.6÷13=0.24.8÷0.4=124.4÷4=1.10.78÷6=0.137.2÷0.4=181÷0.25=47.1×0.4=2.84 4.5÷0.15=301﹣0.07=0.930.42÷0.7=0.650.【解答】解:0.29÷100=0.00295÷1000=0.00519+0÷19=19423﹣(100+23)=300 170×100=17000320÷100=3.290﹣26﹣13=510.56×100÷1000=0.0560.26×1000=26024×99+24=240038﹣25+12﹣25=0500÷100×1000=5000二.竖式计算题(共50小题)1.【解答】解:0.51÷0.5=1.02 98÷5.6=1520.4÷1.7=122.【解答】解:1.092÷0.42=2.6★210÷1.4=1508.9÷0.56≈15.893.【解答】解:69.02÷3.4=20.3 26.8×0.35=9.3846.8÷3.4≈13.84.【解答】解:2.05÷25=0.082 0.13÷0.17≈0.764.2÷0.28=154.2÷1.32≈3.1825.【解答】解:117.3÷0.46=255 24×0.37=8.8840.32÷l.68=246.【解答】解:2.1÷0.7=37÷0.35=207.2÷4=1.87.【解答】解:①2.76×24=66.24②12.6÷0.28=458.【解答】解:220.5÷15=14.72.64×1.09≈2.886.3÷0.125=50.40.84×1.65=1.3869.【解答】解:33.6÷56=0.68.96÷0.28=327.12÷0.22≈3.364.13÷14≈0.3010.【解答】解:(1)12.4÷4=3.1(2)45.9÷0.6=76.5(3)51÷0.3=170(4)52.8÷12=4.4(5)75.6÷0.18=420(6)9.6÷0.32=3011.【解答】解:13÷2.5=5.254.5÷0.16=340.6250.68÷0.95≈0.722.05×0.16=0.32878.6÷11=7.1(商用循环小数表示)6.21÷0.03=20712【解答】解:1.25÷0.25=578.6÷11=7.15.63÷7.8≈0.7228.28÷0.4=70.70.303÷5=0.060613.【解答】解:1.57÷3.9≈0.400.58×0.24≈0.1470.7÷33=2.114.【解答】解:★64.8÷1.8=36★8﹣6.69≈1.3;0.65×3.84≈2.515.【解答】解:9.4÷11=0.8 *144÷12=12 14.2÷11=1.216.【解答】解:75.6÷0.18=42025.6÷0.032=8002.78×1.8=5.0045.63÷6.1≈0.9210÷3.3≈3.17.【解答】解:30÷7≈4.2960.9÷3.2≈19.025÷9.9≈318.【解答】解:(1)6.21÷0.03=207(2)10.8÷45=0.24(3)8.54÷0.7=12.2(4)72.9÷0.9=8119.【解答】解:①50.96÷6.5=7.84②9.25÷3.7=2.5③15÷74=0.22 ④6.72÷4.2=1.6 20.【解答】解:(1)1.25÷0.25=5(2)8.4÷0.56=15(3)8.54÷0.7=12.2(4)78.6÷11=7.121.【解答】解:4.5×0.18=0.812.346÷2.3=1.0270.3×3.6=253.085.06÷2.2=2.322.【解答】解:2.6×0.25=0.6529.9÷0.46=65*4.65÷1.3≈3.5823.【解答】解:①24.6÷0.16=153.75②13.9÷6≈2.32③0.325÷1.5≈0.22④6.24÷0.8=7.8⑤18.3÷4=4.575⑥19.2÷6=3.224.【解答】解:7.05÷0.94=7.51.71÷3.8=0.454.83÷O.7=6.95.7÷9=0.638.2÷2.7=14.42.16÷18=0.121.8÷0.25=7.23.7÷2.2=1.625.【解答】解:(1)3.9÷0.26=15(2)9.35÷3.4≈2.8(3)0.17÷0.11≈1.(4)0.168÷0.7=0.24(5)4.05÷18≈0.23(6)4.68÷5.4≈26.【解答】解:21.45÷15=1.4349.04÷8=6.13217.6÷34=6.411.7÷36=0.3251.69÷26=0.6554.81÷27=2.0327.【解答】解:①25.32÷0.15=168.80②1.03÷1.2≈0.86③1.07÷9.2≈0.12④9.45÷0.32≈29.53⑤13.51÷0.13≈103.92⑥17.96÷0.36≈49.8928.【解答】解:47.04÷5.6=8.43.28×2.7=8.8560.764×1.2≈0.9252.92÷0.27=1968÷1.28=6.2515.36÷12=1.2829.【解答】解:0.195÷0.13=1.53.6÷0.8=4.576.76÷0.76=1016÷2.4=2.5 7.085÷0.65=10.99.72÷0.27=3630.【解答】解:(1)0.38×0.23=0.0874(2)5.79×3.6=20.844(3)4.6×0.25=1.15(4)6÷24=0.25(5)52.95÷75=0.706(6)3.01÷7=0.43(7)4.95÷11=0.45(8)84.01÷31=2.71(9)0.646÷19=0.034(10)4.7×0.59=2.77331.【解答】解:(1)15.6÷12=1.3(2)328÷16=20.5(3)1.35÷27=0.05(4)0.646÷19=0.03432.【解答】解:45.15÷15=3.0552.65÷13=4.0515.75÷2.1=7.58.42÷0.6≈14.030.436÷0.2=2.189.25÷3.7=2.533.【解答】解:6.6÷4=1.6543.5÷29=1.518.9÷27=0.71.35÷15=0.0937.5÷6=6.2528.6÷11=2.620.4÷24=0.853.64÷52=0.0734.【解答】解:0.448÷32=0.01414.3+6.7=213.8×0.26=0.98811.32﹣8.95=2.3735.【解答】解:(1)1.26÷1.8=0.7(2)64×5.04=322.56 (3)43.5÷0.29=150(4)5.63÷0.13≈43.31(5)27.8÷2.5=11.12(6)9.8×0.75=7.3536.【解答】解:5.02×4.8=24.0961.35×320=43226÷0.13=20048÷2.3≈20.8737.【解答】解:★0.756÷0.18═4.20.35×0.48=0.168★6.02﹣5.94=0.0838.【解答】解:96.6÷42=2.37.79÷95=0.082;★6.3÷0.42=157÷0.35=200.14÷0.08=1.7542÷8=5.2539.【解答】解:7.8÷75=0.1042.55÷2.5=1.022.5×1.04=2.640.【解答】解:3.5×10.8=37.880.93÷26.7≈3.01.42÷1.1=1.241.【解答】解:(1)43.8÷12=3.65(2)0.12÷0.25=0.48(3)7÷0.35=20(4)11.62÷9=1.29(5)13÷11=1.(6)30.1÷33=0.9(7)19÷12=1.58(8)5.6÷0.07=80 42.【解答】解:30.6÷45=0.68;4.06÷0.58=7;54.6÷0.91=60;43.【解答】解:0.58×0.08≈0.050.54÷0.018=3013.6÷3=44.【解答】解:(1)95.2÷28=3.4(2)46.8÷0.13=360(3)5.63÷7.8≈0.7245.【解答】解:0.73×2.15=1.5695 7.38÷1.6=4.61255.95÷27.6≈0.2246.【解答】解:3.38÷18=30.9×2.7=83.435.95÷27.6≈0.2247.【解答】解:4.83÷23=0.21 3.09÷1.5=2.060.14÷0.08=(验算)48.【解答】解:70÷5.6=12.5 227.8÷0.34=6707.525÷0.38≈19.80.49.【解答】解:8.65÷0.25=34.6 1.8÷12=0.157.2÷1.1≈6.5550.【解答】解:7.02×1.3=9.12629.83÷9.5=3.140.54÷3.6=0.15。