(完整版)数学五年级下册解方程题目100道

1）(0.5+X)+X=9.8÷2          2(X+X+0.5)=9.8       25000+X=6X  

2）3200=450+5X+X          X-0.8X=6             12X-8X=4.8  

3）7.5×2X=15               1.2X=81.6             X+5.6=9.4  a

4）X-0.7X=3.6               91÷X ＝1.3           X+8.3=10.7  

5）15X ＝3                 3X－8＝16            7(X-2)=2X+3  

6）3X+9=27                18(X-2)=270          12X=300-4X  

7）7X+5.3=7.4              3X÷5=4.8             30÷X+25=85  

8）1.4×8-2X=6              6X-12.8×3=0.06       410-3X=170  

9）3(X+0.5)=21              0.5X+8=43            6X-3X=18  

10）1.5X+18=3X             5×3-X÷2=8           0.273÷X=0.35  

11）1.8X=0.972              X÷0.756=90          9X-40=5  

12）X÷5+9=21               48-27+5X=31        10.5+X+21=56  

13）X+2X+18=78            (200-X)÷5=30         (X-140)÷70=4  

14）0.1(X+6)=3.3×0.4         4(X-5.6)=1.6          7(6.5+X)=87.5  

15）(27.5-3.5)÷X=4           3X+5X=48            14X-8X=12 

16)6×5+2X=44                20X-50=50             28+6X=88 

17)32-22X=10                24-3X=3                99X=100-X 

18)X+3=18                   X-6=12                 56-2X=20 

19)4X+2=6                   X+32=76                3X+6=18 

20)16+8X=40                 2X-8=8                  4X-3×9=29 

21)8X-3X=105                X-6×5=42                X+5=7 

22)2X+3=10                  12X-9X=9                6X+18=48 

23)56X-50X=30                5X=15                  78-5X=28 

24)32X-29=3                  5X+5=15                 X-9=80 

25)100-20X=20                55X-25X=60              76X-75=1 

26)23X-23=23                4X-20=0                    80X+20=100 

27)53X-90=16                2X+9X=11                 12X-12=24 

28)80+5X=100                7X-8=6                    65X+35=100 

29)19X+X=40                 25-5X=15                 79X+X=80 

30)42X+28X=140              3X-1=8                   90X-90=90 

31)80X-90=70                 78X+2X=160              88-X=80 

32)9-4X=1                    20X=40                   65X-30=100 

33)51X-X=100                 85X+1=-86                 45X-50=40

34) 6.75＋3                   5.375+5X=20