小学五年级小数乘除法

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2021年02月18日 00:04
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有道理的爱情-

2021年2月18日发(作者:福音再临)


1


、直接写出得数。



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

< br>=









0.14×


4


=









0.02×


0.1


=










1.2×


0.3


=





0.2×


0.4


=









8.2


+


1.8


=








100


-


3 5.22


=









2.3×


4


=




2.5×


0.4

=










2.4×


5


=










0.2 2×


4


=












3.25×


0


=




0.9


-


0 .52


=








3.9 9×


1


=









0×


3.52


=












12.5×


8


=




8÷


10 =











10-1.8-7.2=








0.43+3.57=







2.5×


4×


12=



0.9×


0.8=









7.5x-3x =










1.05×


100=







1÷


0.5=













0.96÷


3=









1.47÷


0.7=










5.4÷


6=











0.16.5×


10=








0.56×


100=






3.78×


100=








4÷


0.8 =




3.215×


100=







0.8×


10=








4.08×


100=









1.1×


0.2 =



0.6×


0.8 =










3×


0.9=










2.5×


0.4=













3.6×


0.4=




12.5×


8=











50×


0.04=








80×


0.3 =












1.1×


9=




0.16×


5


=








1.78


+


2.2 =








9.6÷


0.6 =







1.2×


0.5-0.4 =





0.7÷


0.01 =








2.5×


0.4 =






12


-


3.9=







1.25×


8÷


1.25 =




6.6÷


0.66 =








5.37×


0+4.63 =




3.9


+


2.03


=








4.2÷


3.5


=






1.6+2.4×


0.3 =






2.1 4


-


0.9


=




27


+


45 6


+


73=






0.3×


0.3=



7.2


+


2.8


=

< p>







0.9÷


0.01


=






12÷


0.3=






2.8 7÷


0.7


=




13÷


4


=










0.9 6÷


0.3


=




1.5×


0.4

=







7÷


0.25


=








2.5×


0.7×


0.8=





8


-


2.5


=







16÷


1.6


=







5.6×


1.01=





8×


(< /p>


2.5


+


0.25


)=





0.36


+


0.64


=





64.32÷


16


=





4.2÷


0.1

=




72.8÷


0.8


=







8.4 ÷


4.2


=





13.8


+


9.9


=






2.4×


2.5

=




0.05×


0.8


=





2.56


-


0.37


=





1.25×


0.8×


0.5


=




12×


2.5


=






1.2 3×


3


=








3.2÷


1.6


=





3.5


+


3.5×


3


=





19.6÷


2


=







8.8÷


2.2=








0.75×


4


=







(


1.5


+


0.25


)


×


4


=





0.5×


0.8=



8.4×


0.2=









1.6×


0.2


=








7.2×


0.3=




2.8×


0.3

=







0.9÷


0.15=








1.8×


0.4=











5.5÷


0.55=






0.08×


100=




2.2÷


0.11=





5.46


+


4.54=








12.5×


0.8=








0.35×


0.3=



1.4×


5=









2.8×


4=











19.6÷


4=










22.5×


4=



2


、用竖式计算




0.396÷


1.2=









0.756÷


0.36=











15.6×


13=





0.18×


15=
















0.025×


14=











3.06×


36=





0.0 4×


0.12


=













3.84×2.6≈












5.7


6 ×


3


=























(保留一位小数)






7.15×


22












90.75÷


3.3















3.68×


0.25




16.9÷


0.13











1.55÷


3.9















3.7×


0.016




13.76×


0.8=










5.2×


0.6

















8.4×


1.3





6.4×


0.5













4.48×


0.4

















5.25×


5






35.4×


4.2











0.042×


0.54
















0.76×


0.32





0.25×


0.046










2.52×


3.4

















1.08×


25



















0.12×


0.5×


0.16


=







4.8×


0.25


=










0.125×1.4≈



(保留两位小数)





2.5÷


0.7=




(保留三位小数)







10.1÷


3.3=




(商用循环小数)






10.75÷


12.5=




(用乘法验算)








3.25×


9.04=




(用除法验算)





3


、脱式计算(能简算的要简算)



2.5×


7.1×


4











16.12×


99

< br>+


16.12









5.2×


0.9

+


0.9




7.28×


99+7.28








4.3×


50×


0.2







64


-


2. 64×


0.5





26×


15.7

+


15.7×


24








(2.275


+


0.625)×


0.28














3.94+34.3×


0.2












1.2×


(9.6÷


2.4)÷


4.8




























































8.9×


1.1×


4.7









2.7×


5.4×


3.9






3.6×


9.85-5.46

















8.05×


3.4+7.6





6.58×


4.5×


0.9









2.8×


0.5+1.58





32


+< /p>


4.9


-


0.9









4.8


-


4.8×


0.5









(1. 25


-


0.125)×


8




4.8×


100.1









56.5×


99


+


56.5






7.0 9×


10.8


-


0.8×


7.09




4.85 + 0.35 ÷


1.4















8.7 ×


17.4 - 8.7 ×


7.4





12. 5×


0.4×


2.5×


8







0.87×


3.16+4.64







9.5×


101










0.68 ÷


(


5.2 -3.5


)


×


1.25























40.5 ÷


0.81 ×


0.18





4.8 ×


(


15 ÷


2.4


)






2


.


13. ×


0.×


8257




6.81+6.81×


99








0.25×


185×


40






4.4×


0.8


-


3.4×


0.8














(9.37+9

< br>.


37+9


.


37+9


.


37)×


2


.


5







4


.


2.×


1.


+< /p>


1.×


1.75





2.37×


6.3+2.37×


3.7






2.5×


1.25×


0.32





3.8×


10.1





2.5×


(3.8×


0.04)












7.69×


101












3.8×


10.1





0.25×


39+0.25









0.125×


72






46×


0.33+54×


0.33




(8×


5.27) ×


1.25







6.81+6.81×


99






0.25×


185×


40




6.8×


0.75÷


0.5








3.75÷


0.125


–


2.75






1.53+23.4÷


7.2




9.5×


99













13.5×


0.98












12.5×


8.8





二、解方程:



54-X=24














7X=49
















126÷


X=42




13+A=28.5









2.4X=26.4











7.5x


-


3x=18


有道理的爱情-


有道理的爱情-


有道理的爱情-


有道理的爱情-


有道理的爱情-


有道理的爱情-


有道理的爱情-


有道理的爱情-