五年级小数的乘除法练习题及答案

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五年级小数的乘除法练习题及答案
一、直接写出得数:
0.27×= .2÷0.= 1.25×=0.83+0.2= 0.09×0.= 10÷0.1 =.5÷1.= .8-1.0=
2.5×4.=.8×101 =
二、填空:
1、已知两个因数的积是1.44,其中一个因数是1.2,另一个因数是。

2、在计算除法3.96÷0.12时,需要把除数的小数点向右移动两位变为整数,则被除数应扩大。

4、根据算式45.5×3.6=163.8写
出两个积为16.38的乘法算式①,② 。

5、4.90保留两位小数得,精确到十分位得。

6、比较大小:.68×0.99○9.6.82÷0.99○4.82
7、1.25时=分0.5天=时
8、在4.2 .234.23 .32中最大的数是,最小的数是。

三、判断:
1、在除法运算中,商一定比被除数小。

2、两个因数的小数位数的和是3,积的小数位数也一定是3。

3、小数除法的意义与整数除法的意义完全相同。

4、一个小数是循环小数,那它一定是无限小数。

5、求商的近似值与求积的近似值一样,先要算出商,再按要求取近似值。

四、选择:
1、在1.25×12×8=12×中,用到的乘法的
①乘法交换律乘法结合律③乘法分配律④乘法交换律和结合律
2、在计算除法时,如果要求得数精确到0.1,商应除到
①十分位②百分位③千分位
3、下面算式中,结果最大的是
①4.2×0.9②4.2÷1.3③4.2×0.45④4.2÷0.45
4、一根木棒锯成三段需要15分钟,锯成四段要
①20分钟②15分钟③22.5分钟
五、用竖式计算:
0.56×0.8=.8÷11=
六、求未知数χ:
χ×6.2=1.8÷χ=19.χ÷1.8=2.6
七、计算下面各题,能简算的要简算
6.25÷0.25×8.04÷
0.486+0.01+3.919.75÷2.5-3.55
17.5×2.3-7.5×2.3
90÷25÷4
八、列式计算:
1、3个9.5比15多多少?
2、比3.5的2.4倍还多1.2的数是多少?
3、0.8与0.9的积除以1.2,商是多少?
4、78减去3.4与0.17的商,差是多少?
九、应用题:1.25×11×4×0..93×5.7+8.93×3.3+8.93
1、学校参加团体操大赛,四年级有80人,五年级的人数是四年级的1.5倍,两个年级一共有多少人参加团体操大赛?
2、用载重为3.5吨的货车5辆,运122.5吨货物,要几次运完?
3、一辆汽车0.5小时行驶15.2千米,照这样计算,行驶228千米需要多少小时?
4、开学五年级一班布置教室,用去纸4张,每张2.8元,用去胶水两瓶,每瓶
1.4元,一共用去班费多少?
5、从学校到少年宫共有3.6千米,一辆汽车行这段路程共用了6分钟,请问这辆汽车每小时行多少千米?
6、某同学在算一道除法题时,把一个有两位小数的被除数的小数点漏掉了,除以1.8后商是230。

请你写出正确的除法算式,并计算出商。

5.6×2.93.77×1.0.02×965.22×0..99×0.02.67×0.9
5×2.441.666×6.1.432×0.002.6×6.4.88×2..61×4.3
8.9×2.4.5×559.77×0.0 1.384×5.1 .78×82.6×61
0.059×0.2.268×1.7×5.9.46×2.8517.8×6.41.5×4.9
2.5×0.85.555×5.2.22×
3.337.658×856.02×0.56.78×8
除法:
85.44÷1642.84÷101.7÷967.5÷15230.4÷621.24÷36
0.736÷243.5÷12.21÷39.6÷246.21÷0.0210÷1.4
51.3÷0.91.2÷3.
0.756÷0.180.66÷0.11.97÷1.569.6÷2.9
38.4÷0.815÷0.06

8.2÷0.10.8÷0.6.4÷5..7÷1.25÷1.2÷42
14.36÷2.78.33÷6.1.7÷0.02.41÷0.7
用竖式计算
0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15=0.025×14=.06×36=
0.04×0.12= 3.84×2.6≈.76×3=.15×2290.75÷3.3.68×0.25
16.9÷0.11.55÷3.93.7×0.01613.76×0.8=.2×0.68.4×1.3
6.4×0..48×0..25×55.4×4.20.042×0.50.76×0.32
0.25×0.0462.52×3. 1.08×20.12×0.5×0.16=4.8×0.25=0.125×1.4≈
2.5÷0.7=10.1÷
3.3=10.75÷12.5= .25×9.04=
3、脱式计算
2.5×7.1×416.12×99+16.12.2×0.9+0..28×99+7.284.3×50×0.64-2.64×0.5
26×15.7+15.7××0.283.94+34.3×0.
1.2×÷4.8.9×1.1×4.
2.7×5.4×
3.9
3.6×9.85-5.
4.05×3.4+7..58×4.5×0..8×0.5+1.52+
4.9-0..8-4.8×0.5
×84.8×100.16.5×99+56.5.09×10.8-
0.8×7.094.8+ 0.3÷ 1.4
8.× 17.-.×.412.5×0.4×2.5×80.87×3.16+4.69.5×1010.6÷× 1.240.÷ 0.81 × 0.18
4.×.81+6.81×9 0.25×185×40 .4×0.8-3.4×0.×.5
2.37×6.3+2.37×
3..5×1.25×0.3.8×10.12.5× .69×1 01.8×10.1
0.25×39+0.0.125×76×0.33+54×0.33 ×1.6.81+6.81×9 0.25×185×40
6.8×0.75÷0..75÷0.125–2.7 1.53+23.4÷
7.29.5×913.5×0.9812.5×
8.8
小学五年级数学上期计算练习题集
2.14-0.9=0.5+7.6=240÷48=00÷300= 0.75-0.38=6+99=0×30=20×35= 1-0.2=3-2.25=1.57+
3.43=286+199= 18.54-9.9=×99=.4÷2=48÷0.6=÷3=
0.24÷0.2=.8÷6=0.96÷0.03=.4÷0.2=.83.24÷0.24= .2 496÷3=
0.242.4÷0.2=.822.8÷3= .9832÷42=246.45.3+6.7= .4-3.6-1.4= 012.9-8.5=.2286+198= 14-202=526+301= 23-99=
0.45×2.5=0.810×0.07=0.30.2×0.26=0.140.2×0.4=8.22.5×0.4=2.40.9-0.52=.998÷10 =10-1.8-7.2=0.43+3.57=2.50.9×0.8=.5x-3x=a+3a+7a= 1.051÷0.5=0.960.16.5×10= 0.563.215×100= 0.80.6×0.=312.5×8= 00.16×5= 1.780.7÷0.01=2.53.9+2.03= .227+456+73= 0.312÷0.3= .871.5×0.4=7÷0.6= .6÷2.4=.4÷0.2=.8÷0.6= .6÷0.23=19.76÷13 =.17×0.4= .8×1.25=0.3×1.4=0.05×4= 0.02+1.8=100×5=0.22×1=0÷3=1.47×100=.78×10=4.08×0.9=.5×0.04= 0+2.=9.6×0.4= 12÷3.5=×0.3= .2÷0.7=13÷0.25=.5÷0.3=.24÷2=48÷6=0.96÷0.3=5.8÷5.2=.81÷0. 7=0.4×0.01= 15×1.4=+2-8+2= ×3.6=0.3×7=0.92×0.1= 1.2-35.22=.3×4=.25×3.52=12.5÷0.7=5.4×100=4×100=1.1×0.4=.6×0.=
1.1÷0.=1.2-3.9= .61.6+
2.4×0.3= .14+2.8=0.9÷4=0.96×0.7×0.8= ÷24= ÷0.6= ÷0.03= ÷6= ÷7= ÷0.01= ÷1.5= ×0.3=×0.4=×0.3= ×4=×0.5= ×8=×4×12= ×100= ÷6= ÷0.8= ×0.= ×0.4= ×9= ×0.5= ÷0.66= -0.9=÷0.01=÷0.3=-2.5=
16÷1.6=.6×1.01= 0.36+0.64= 4.32÷16=.2÷0.1=72.8÷0.8=8.4÷4.2=13.8+9.9=.4×2.5=
0.05×0.8=2.56-0.37=12×2.5=1.23×3=.2÷1.6=.5+ 3.5×3=19.6÷2=.8÷2.2= 0.75×4=0.5×0.8=.4×0.2= 1.6×0.2=7.2×0.3= .8×0.3=0.9÷0.15= 1.8×0.4=.5÷0.55= 0.08×100=2.2÷0.11=.46+ 4.54= 12.52.8×4=19.60.756÷0.36= 15.63.06×36= 0.047.15×22=0.751.55÷3.9=3.78.4×1.3=.435.4×4.2= 0.0422.52×3.4=1.0810.1÷3.3=10.750.43×0.28= .453. 08×0.43= 1.513.95÷3.1=.5×4×12= 0.91.05×100=15.4÷6=12865÷0.05=442÷0.003=787.2÷0.002= 10007.5÷5=8.62.5÷0.005= 0.368.6÷0.0043=69.8÷0.7=.6133÷.0007= .055.6÷700 =6018.63÷0.03=.50.29÷2.9=3.47.09×10.8=
0.8×0.8= 0.35÷4=22.5×13= 0.18×0.12=.84÷3.3=3.68×0.016=13.76×0.5= .48×0.54= 0.76×25= .8÷12.5= .25×0.73=4.6×26.7=.22÷10= 10-1.8-7.2= 0.43+3.57= ×0.8= .5x-3x= a+3a+7a= ÷0.5= 0.96÷0.4=÷0.12=÷0.06= 5÷1.25=10÷0.002=0.0036÷0.0006=.5÷0.0023=8.4÷0. 023=0.009÷0.5= 123000÷0.008=4.329×99=13.5×0.2= 0.57×7.09=.5×0.3=1.4×4= 0.396×15= 0.025×2.6=5.76×0.2=16.9×0.8= .2×0.4=5.25×0.32=
0.25×0.25=.5×9.04= 12.5×0.6=.9÷29= 18.72÷3=
1.47÷0.6= .6÷0.4=÷0.005=81÷
2.5= 120÷
3.6=.6÷2=6.3÷0.0084=
1.28÷0.005=39÷1.23=0.00125÷6=92×0.98=
0.1-0.047= ÷19=3+124+76= ×101=.8×5= ÷1.2= ×14= ×3=÷0.13= ×0.6= ×5=
×0.046= ÷0.7= ×8.8= ×0.05= ÷3.6=÷0.7= ÷3.2= ÷0.18= ÷0.03= ÷0.024= ÷2= ÷21= ÷3.2= ÷0.0003= ÷50= ÷0.004= ×10.1=
7.69×101=3.8×10.1= 0.125×72=7×19+7=2.8÷3= .98÷0.23=19.76÷5.2= .81÷7=2÷42=246.4÷13=.17÷0.7=0.4÷0.01=.3+6.7= .4-3 .6-1.4= 0×0.01= 15÷1.5= 12.9-8.5=.2×0.4= .8×1.4=+2-8+2=86+198= 14-202=526+301= 23-99= 0.45×2.5=0.8×1.25=0.3×3.6=0.3×0.3=10×0.07=0.3×1.4=0.05×7=
0.92×0.4=0.2×0.26=0.14×4=0.02×0.1=
1.2×0.3= 0.2×0.4=8.2+1.8=100-35.22=.3×4=.5×0.4=
2.4×5=0.22×4=.25×0.5= 0.9-0.52=.99×1=0×
3.52=12.5×8=.4-2.5-1.4=.5×1.25×0.32= 12- 6.2- 3.8= ÷5=1.7+0.43+3.3=5×25×4=
250-250÷5=70+50÷50+70= 13.7+0.98+0.02+4.3= 18.6- 3.47-0.53=2×101-72= 35×28-35×28=.6×78+78×7.4= .26-=×= 1.25×0.8×0.5=÷54=1210.5÷=6.25+3.85-2.125+3.875=3.375+5.75+2.25
+6.625=.1×4.3+5.7×2.1=.3756.54+2.4+3.46+0.6=5.61.
5×4.2-0.75÷0.25=.270.25×80-0.45÷0.9= .4+2.47.5-5.7×1÷3= 12.37-3.25-6.75= 16×6.8+2.2×16+16=58.7-16.650.4×4.7×2.5+=.31-1.1
25-7.875=00×= 1.2×= 1.530.6÷= .7+3.913.12×=.2+9.7282.4×0.75+1.25÷2.5=÷2.5=.48101×0.36÷=
10.5÷+18.25= .111025-1125÷4.5×3.6=0.875×36+4.05÷8.1=30÷= ÷3.6+85.7=×28.4= 0.1×6.3+2.37×3.7= +0.625)×0.28= -= ×72= ÷= ÷0.034= ×0.97+0.97×6.625= ×1.8+95.6×8.2= ×+3.27×5.7=
×= ÷3.7= ×÷4.8=
×= ÷= ÷3.2×1.5=
20.2×0.6-2.12)÷0.1= ÷0.8×0.9=
÷0.3×8.5=
-0.72×÷0.16= ÷1+1÷0.8-0.1=
-14.88÷2.4= ÷4=
58.8÷÷0.02=10.4-7.79÷=.6÷×5= 13.7×0.25- 3.7÷4=.6×1.25+ 0.32÷0.4= 0.8×=.5×=.2×=.4÷×0.8= 19.28+ 1.82÷0.7= 10.56×3.75- 3.75×0.56= ÷0.4= ÷0.042= ÷0.-.05= .27÷0.25= 1.08÷1.7= 1.461.52-1.6×5+5.7=.818.64- 4.35×2+20.9=0×÷0.1=1.6×=0.06×÷2=
17.6819.8+÷2.3=.6+15.41.5×1.2-0.6÷2.4=0.64.32×15÷12+5.1÷0.85=.68.7-.74÷23+700×0.03=
0.38+9.624.38÷=
1.6×= .026.5×+
2.98=4.75+8.44.5×+9.23= .4+×0.8+4 .32=.11×2.75-0.9= 14.78+0.22×20÷16=31.710-7.5×=4.2×+.3=2.717.2-4.5×
3.6)÷0.32= ×= ÷= ×5+12.8÷0.4×7.5= += -2.5×4÷8=
×÷0.92=.5+1.3×6)÷1.5= ×÷1.2=
×= -8.2×= +8.4×1.5÷0.18=0.2×0.6-2.8]÷0.4= ÷5.2+2.7×1.5= ÷0.4×1.4=
×= ×= ÷3.7×5.4=.84-3.9)÷0.4+0.15= ×1.027÷0.26)= ÷= ÷0.23)= +6.5×= -0.72×= -0.5×0.7-1.65=
2.95+10.58-1.53)÷0.25= ÷+.3×0.25=
(((((。

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