小学数学总复习:解方程专项练习200题及答案

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2021年02月10日 17:40
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2021年2月10日发(作者:别)


.


解方程专项练习


200

题(有答案)




1



x










=






6



1



20%x=0.4









8




1


÷(


x




=6





2




x


×


×


=














3






4x=








4





8


×


2.5



2x=13.6















5





0.78



x=3



5
















.


9



2x



x=1.2









10



9< /p>


×


3



1.7x =13.4









11



x



25%x=24















12


)< /p>


x



+0.2=


























13< /p>



0.6x+90%x=78





















14


)< /p>


20%x



2.4


×


3=0.8
















15



x



x=42
















16< /p>



0.6x+3


×


2.5=67.5




















17< /p>



1


÷(


x



0.45



=5






.


.



1 8



x



2. 25=8.25












19< /p>




x=3


:< /p>


12




















20< /p>



x+0.8=5.6









21)



1.4



x=1



0.75













(22)



x


×(


2




=24

















(23)



4x


=3











24< /p>



12x+7


×


0.3=20.1



















25


)< /p>


x+


x=















26< /p>



x



42=< /p>















27



×


0.5+


x=



















28< /p>



0.8



=0 .48



x















29< /p>



χ



χ


=














.


.



30



42



=


χ








31



5x



0.4=75%





( 32)


6x



0.9=4.5









(33



2



x



3



=5.8


,< /p>







34)



1.6x=6.4







(35)



4x


3


×


9=29

< br>,









(36



16+8x=40




.







37



< /p>


x


÷


1.1=3






42



3x



x=




43










=









38



+2x=








39


)< /p>


×


3



7x=1 .04















40



x



1



x=2













41< /p>



x



x=14







.


44



1.2



=




45



=< /p>





46




=x



0.8




47



x


=


+1




48



1



25%X+25%x=

+25%x






















.



49









=






56




150%x+66=99












50



×


X=









51



< /p>


5



8=x


:< /p>


32










52



2x+3


×


0.9=24.9



















53



5.3x



2.9x=





54



×(


7



2.8x


=1.5







55


)< /p>


x



0.3=







.


57



x +6



0.8x=16



58










59









60



3< /p>


÷(


X




=1.3



















.


(< /p>


61




X+0 .5




2


=



X



4










62



< /p>


X


÷


0.05=3.528








68


)< /p>


6X+5=17
















63



2X



4


×


6=80


,< /p>










64



4


×


4.5



3X=6.38











65



4X



7.2=10








66



11.5X+X=20













67< /p>



3.8


×


12 +15X=87.6









.


69



0 .6


×(


2.5+X



=4.2



70


< p>


=X













71









72























.



73









74



4



+x



=







80














18%=












75



×


0.25 +


x=

















76



x
















77



200< /p>



6=x



,< /p>












78


)< /p>


4


÷


X=













79


)< /p>


8



x



2



=2



x+7














.


81




2x=





82



x+


x=46





83




x=











84



=< /p>

























.




(< /p>


85



5



3x



4


)﹣


2



x



1



=5


< p>
2x



1





















86











=





91



28.4



5x=5.8










92)x



=









87



8



2X



7



=5



X+13




















88



3



x+4.5



=6 0









89< /p>



1.6x+2.4=7.52













90


)< /p>


3



x



0.8



=6.3















.


93



+ 2x=




94



x=15%



< br>95



x


x=




96


x+50%x=6














97


)< /p>



x=0.3



12






















.












98



4x+2



8



x



=26

























104



x









99



x



=0








100



+


x=1








101



x


×(


+



=








102









103





.


10 5



x


×


,< /p>



106



5x +35=650









107



720


÷


3x=80




108



3.6x



0.9x=8.1

























109



4


×


4.5



3x=6

















110



=















111



6


×


3



1.8X=7.2













112



÷


x=





















113



x


÷


=42

















114



x+


=< /p>







.


.



115



7x


÷


3=8.19













116



12< /p>



0.6=x















117



3



x+2



=4



x+ 1
















(118)3x

< br>﹣


70%x=9.2












(119)



6+

< br>x=240








120



22.5



0.4x=12.5













.



121



x



3.5=4


2














122



x



0.8x



6= 16
















127



x


×


50%



x=5




















128



1



x=< /p>







123




=x



8








124














125



x



15=









126



x+


x=







.



129



2 .5+1


x=3





130



3


x



2


=4< /p>




131


)< /p>


8.5



3x=2





132



3


÷


x=4






1 33



x



5 %=17.54


























134




=




4



x









(135)




6x+31=49










(136)



7x


÷


3= 8.19







(137)



32.8



9x=17.5








(138)



x


0.36x=16







(139)



6

×


7+3x=69




.


.











(140)



6x+2x



56=0








(141)


3x



0.45


×


4=2.7












(142)



5.8x



4.6x=0.96












(143)



8.4


÷(


9



x

< br>)


=3

















(144)




3x


÷


1. 2=8










.




(< /p>


145



5x+28=71













150



8x



2. 6=37.8








151



x


÷


=






146



8.7



1.2x=3.9








147



8x


﹣< /p>


2.6x=37.8














148



0.75x



0.95


×


4=8.5



















149



54


÷


2+ 3x=72
















. < /p>


152



x+30%x=26

< p>




153




7 .8



3x=3.6






154






6


×


3



1.8x=7.2











155



10


:< /p>


x=4.5



0.8




























156




=x



,< /p>














157



X



7.65=4.64








158



28.25



X=8.25










159



X


﹣(


3.6+2.97



=12.42
















160



÷


x=< /p>










161



14.5=5.5





162



x


80%x=48










.


.




163



7 5%x



5


×


=6













164



x



6.8 =15.4












165



1.9x=5.7







166



4.3y



y=4.6














167



5x+2.6=7.6







(168)



x


1.5=12.9









.


(169)




9x+5x=8.4















(170)



6.8+3.2x=14.8









176



x


×


20%=15.2








171



5


÷


x=













172




x=








173



4.5


×



3


x=1.5













174




1+25%



x=0.5

< br>,















175



x



40%x=9









. < /p>


178



x


﹣< /p>


x=













179



x


÷


75%=3




1 80



4x





















181




x=



4.5











182




x



4.5


)×


6= 12.5

































.




(< /p>


183



27



17x=13.4













189



4x< /p>



5


×


6=12












184



9.6+3x=3.24


×


5








185



2x+5=5x



7

< br>,









(186)



3


x



2



=2



5



x



2

















187



4x



3


(< /p>


20



x



+4=0





















188




=1< /p>




.


190



8x



3x =15.6











191



30


×(


x


÷


4



=60



192



7.2


×


0.5



3x=1.2

< p>











193



5x



2.4


×


5=8













194



+


x=< /p>


×


2
























.






195



5x+2.4


×


15=66

< p>











196



3.2x+2.8x-x=1













197



2.5


×


16-8x=12

















198



9.6-3x=6.3











199



5



x+6



=75








200



x


÷


0.7+0.9


×


3=4

< br>,

























.

























答案:


.


.



1



x



=









=













x=







2




x


×


×


=










x=







x


×


21=


×


21


,< /p>











x=12







3






4x=





4x+4x=


+4x




=


+4x





÷


4=4x


÷


4









x=





4





8


×


2.5



2x=13.6












20



2x =13.6











13.6+2X=20

















2X=6.4


















x=3.2





5





0.78



x=3



5













3x=0.78


×

< br>5













3x=3.9














x=1.3






6



1



20%x=0.4





1



20%x+20%x=0.4+2 0%x








0.4+20%x=1



< p>
0.4+20%x



0.4=1

< br>﹣


0.4












20%x=0.6






20%x


×


=0.6


×















x=3





8







1


÷(


x




=6




1


÷(


x



)×(


x




=6


×(


x



< p>


















1=6


×(


x



















6x



6< /p>


×


=1



















6x< /p>



3=1






















6x=4




















6x< /p>


÷


6=4


÷


6< /p>
























x=


< /p>



9



2x



x=1.2










x



2




=1.2< /p>











x=1.2








x


÷


=1.2


÷< /p>












x=1






10



9< /p>


×


3



1.7x =13.4











27


﹣< /p>


1.7x=13.4






27


﹣< /p>


1.7x+1.7x=13.4+1.7x



.


.







13.4+1.7x=27




13.4+1.7x



13.4=27



13.4














1.7x=13.6









1.7x


÷


1.7=13.6


÷


1.7


















x=8



11



x< /p>



25%x=24














75%x=24










75%x


÷


75%=24


÷


75%

















x=32






12



x< /p>



+0.2=




x



0.6=




x



0. 6+0.6=


+0.6




x=




x< /p>


÷


=


÷







x=1







13


)< /p>


0.6x+90%x=78


















1.5x=78













1.5x


÷


1.5=78


÷


1.5




















x=52










14


)< /p>


20%x



2.4


×


3=0.8















20% x



7.2=0.8








20%x



7.2+7.2=0.8+7.2











20%x


÷


20%=8


÷


20%



















x=40






15


)< /p>


x



x=42













x=42









x


÷


=42


÷












x=252


16



0.6x+3

< p>
×


2.5=67.5
















0.6x+7.5=67.5












0.6x+7.5



7.5=67.5



7.5




















0.6x=60














0.6x


÷


0.6=60


÷


0.6






















x=100









17



1


÷(


x



0.45< /p>



=5




÷(


x



0.45


)×(


x



0 .45



=



x



0.45










x



2.4=1.6




x



2.4+2.4=1.6+2.4









x=4





x


÷


=4


÷< /p>




.


.








x=


< /p>



18



x



2.25=8.25


< br>






x



2.2 5+2.25=8.25+2.25


















x=10.5




19




x=3



12











3x=


×


12


,< /p>








3x


÷< /p>


3=9


÷


3


,< /p>












x=3



20



x+0.8=5.6






x+0.8



0.8=5.6



0.8









x=4.8






x


×


=4.8


×










x=8





21)



1.4



x=1


0.75










x=1.4


×


0.75










x=1.05



(22)



x


×(


2




=24
















x


×


=24












x


×


÷


=24


÷




















x=20




(23)



4x


=3




4x



+


=3


+










4x=4







4x


÷< /p>


4=4


÷


4


,< /p>



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