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六年级分数方程专项练习180(附答案)
2025-10-05 11:05:08 责编:小OO
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分数方程专项练习180题(有答案) 

(1)+X=,

(2)X﹣=,

(3)x+x=42,

(4)=,

(5)5x﹣3×=,

(6)x+=,

(7)+2x=,

(8)12÷(x+)=1.2,

(9)

(10) 

(11)X×2=4×5,    

(12)X﹣X=,

(13)90×+x=20,

(14)0.2x+=8﹣x,

(15)X+(3X﹣16)÷=10(X+1),

(15)=,

(16)X﹣X=1,

(17)x+x=42

(18),

(19)﹣=1,

(20)2X+1=2,

(21)﹣x=     

(22)x+2=4.25 

(23)x﹣(1+)=4.5

(24)37.5++x=69 

(25),       

(26)x=2.4×5,

(27)x﹣+=,

(28)x+x=121,

(29)(x+)×7=8.1,

(30)=,

(31)4x+=5, 

(32)+x=9,

(33)x﹣x=,

(34)x+x=11,

(35)2x+=4.625,

(36)﹣2X=,

(37)x﹣x=2,

(38)+21.5=x,

(39)﹣3x=,

(40)+x=,

(41)x+5×4=95

(42)x﹣x=   

(43)﹣3χ=,

(44)x﹣x=0.2,   

(45)y﹣4﹣y=18,

(45),

(46)×3+2.75x=,

(47),

(48)5x﹣3×=,

(49)x=,

 (50)x+x=39,

(51)7x﹣3x=,

(52)x+=,

(53)﹣=,

(54),

(54),

(55)5x﹣=34

(56)x﹣×6=

(57)x+1.2x=25

(58)8﹣4.5x=,

(59)x﹣0.95×4=8.5,    

(60)2x﹣=2+,

(61)x+x=,

(62)x﹣=2﹣,

(63)﹣=2.5,

()x=18,

(65)x﹣=,

(66)x﹣x=,

(67),

(68),      

(69)x﹣x=,

(70)1.25:0.25=,

(71)1﹣x=,

(72)x+x=,

(73)x+x=42,

(74)x+0.25=,

(75)x=10×,

(76)x+x=2,

(77)x×(1﹣37.5%)=,

(78)(x+)=2,

(79)x=50×,

(80)x+x=42,

(81)4+x=102,

(82)X+X=,   

(83)X=,

(84)(1﹣)X=,

(85)χ﹣χ=,

(86)χ=42×,

(87)8x﹣×3=,

(88)+=1,

()3x﹣×=50%,

(90)3x﹣x=,

(91)+x=,

(92)﹣x=×,

(93)÷x=0.8,

(94)x+5×4=95,

(95)x﹣x﹣4=18,

(96)÷ⅹ=,

(97)x×=4,

(98)ⅹ=,

(99)ⅹ﹣6=7,

(100)+5x=110,

(101)x﹣4=60,

(102)x﹣x=9,

(103)x﹣x=3.6,

(104)÷x=

(105)=9.1,

(106)4(+x)=,

(107)×0.25+x=,

(108)x+x=,

(109),

(110),

(111)+3x=,

(112)=,

(113)×﹣X=,

(114)x÷=30,

(115)﹣x=7,

(116)x=×10,

(117)X﹣X=6,

(118)X﹣2=13,

(119)(1﹣)X=480,

(120)6X+X=39,

(121)2.4﹣=3.2﹣x,

(122),

(123),

(124)X﹣X=,

(125)6X+4.5=,

(126)80%X﹣0.6=4.2,

(127)X+X=,

(128)X+X=,

(129)÷x=,

(130)x÷=42,

(131)x+=,

(132)X﹣=,

(133)X+X=3,

(134)X+=×8,

(134),

(135),

(136)x﹣7.5=,

(137)2X+=1,

(138)X÷=,

(139)X﹣X=1.5,

(140)x=28×,

(141)(x+3)×=48,

(142)x﹣=,

(143),

(144)2÷x=2,

(145)3﹣4x=2,

 (146)x÷=÷

 (147)÷x=÷.

(148)X﹣25%X=135,

(149)X﹣12.5×4=0,

(150)x+×=1,

(151)  x×(﹣)=,

(152)8×﹣1.5x=1.1,

(153)xx=2,

(154)x﹣=, 

(155)x﹣x=15,

(156)X÷=,

(157)(X﹣)=,

(158)X+X=×,

(159)﹣x=,

(160)x+0.75﹣=0.15,

(161)2x+=4.625,

(162)÷4.8x=15.8,

(163)x=14,

(1)x+x=2.1,

(165)2.7÷120%x=9,

(166)(13﹣X)×=6,

(167)x﹣21×=4

(168)1x+x=

(168)x×(﹣)=

(169)2+x=5,

(170)4x﹣=;

(171)x÷=

(172)x﹣x=3

(173)6x﹣3.5x=÷

(174)﹣3X=

(175)

(176)5X﹣3×

(177)x××=5

(178)χ=,

(179)χ+χ=,

(180)x=

(181)x+15=40

(182)x÷=

专项练习参:

(1)+X=,

    +X﹣=﹣,

          X=;

(2)X﹣=,

  X﹣+=+,

       X=;

(3)x+x=42,

  (+)x=42,

        x=42,

     x×=42×,

         x=36;

(4)=,

      4.5x=8,

4.5x÷4.5=8÷4.5,

        x=

(5)5x﹣3×=,

      5x﹣,

5x,

        5x÷5=,

            x=0.7

(6)x+=,

x+﹣=﹣,

      x=,

   x÷=÷,

          x=;

(7)+2x=,

+2x﹣=﹣,

         2x÷2=÷2,

             x=;

(8)12÷(x+)=1.2,

12÷(x+)×(x+)=1.2×(x+),

         1.2×(x+)=12,

    1.2×(x+)÷1.2=12÷1.2,

              x+﹣=10﹣,

                    x=9.

(9)

         x=,

    x÷=4÷,

          x=;

(10)

        ,

      3x﹣+=+,

             ,

           3x÷3=÷3,

            . 

(11)X×2=4×5,

       X=20,

   X×=20×,

       X=15 

(12)X﹣X=,

  (1﹣)X=,

       X=,

     X×3=×3,

       X= 

(13)90×+x=20,

        15+x=20,

   15+x﹣15=20﹣15,

        x×2=5×2,

           x=10;

(14)0.2x+=8﹣x,

0.2x++x=8﹣x+x,

     1.8x+=8,

  1.8x+﹣=8﹣,

        1.8x=7.2,

   1.8x÷1.8=7.2÷1.8,

           x=4 

(15)X+(3X﹣16)÷=10(X+1),

     X+(3X﹣16)×4=10X+10,

           X+12X﹣=10X+10,

             13X﹣=10X+10,

          13X﹣+=10X+10+,

                13X=10X+74,

            13X﹣10X=10X+74﹣10X,

                 3X=74,

              3X÷3=74÷3,

                  X= 

(15)=,

   +2x=+2x,

        +2x=,

     +2x﹣=﹣,

           2x=1,

        2x÷2=1÷2,

           x=0.5 

(16)X﹣X=1,

   (﹣)X=1,

          X=1,

       X×2=1×2,

          X=2;

(17)x+x=42

(+)x=42

      x=42

      x=42÷

      x=36

(18),

  =,

         =,

             =﹣,

              =,

         ÷=÷,

              x=

(19)﹣=1,

(﹣)×6=1×6,

          4x+2﹣3x+3=6,

                x+5=6,

              x+5﹣5=6﹣5,

                  x=1 

(20)2X+1=2,

2X+1=2,

     2X÷2=÷2,

         X= 

(21)﹣x=

             x=﹣

             x=﹣

             x=;

(22)x+2=4.25

          x=4.25﹣2

          x=4﹣2

          x=3﹣2

          x=1;

(23)x﹣(1+)=4.5

    x﹣(1+)=4.5

           x﹣1=4.5

               x=4.5+1

               x=4+1

               x=4+1

               x=6;

(24)37.5++x=69

    37.5+0.2+x=69.5

        37.7+x=69.5

             x=69.5﹣37.7            

             x=31.8

(25),

           ,

         ,

         ,

             x=18 

(26)x=2.4×5,

       x×6=12×6,

         x=72;

(27)x﹣+=,

         x﹣=,

      x﹣=,

            x= 

(28)x+x=121,

x=121,

           x=132;

(29)(x+)×7=8.1,

            7x+6=8.1,

          7x+6﹣6=8.1﹣6,

           7x÷7=2.1÷7,

               x=0.3;

(30)=,

×3.6=×3.6,

        x=15

(31)4x+=5,

      4x+=5,

         4x÷4=,

             x=;

(32)+x=9,

+x=9,

        x=;

(33)x﹣x=,

         x=,

      x×6=×6,

         x=5;

(34)x+x=11,

        x=11,

    x×=11×,

         x=

(35)2x+=4.625,

  2x+﹣=4.625﹣,

        2x=4,

         x=2,

(36)﹣2X=,

﹣2x+2x﹣=+2x﹣,

         =2x,

       2x=,

        x=,

(37)x﹣x=2,

        x=2,

   x×=2×,

      x=;

(38)+21.5=x,

          22=x,

       22×=x×.

           x= 

(39)﹣3x=,

        14﹣48x=11,

        48x+11=14,

     48x+11﹣11=14﹣11,

           48x=3,

       48x÷48=3÷48,

             x=;

(40)+x=,

       3x+1=2,

     3x+1﹣1=2﹣1,

         3x=1,

      3x÷3=1÷3,

          x=;

(41)x+5×4=95

     x+20=95

        x=95﹣20

        x=75

        x=75÷

        x=125

(42)x﹣x=,

        x=,

   x=,

        x=;

(43)﹣3χ=,

﹣3χ+3x=+3x,

    3x+=,

    3x+=﹣,

        3x=,

     3x÷3=÷3,

         x=

(44)x﹣x=0.2,

      (﹣)x=0.2,

            x=0.2,

              x=8.4;

(45)y﹣4﹣y=18,

        y﹣4=18,

     y﹣4+4=18+4,

      y=22,

           y=88

(45),

x÷=×÷,

         x=;

(46)×3+2.75x=,

+2.75x=,

+2.75x﹣=﹣,

           2.75x=,

     2.75x÷2.75=÷2.75,

               x=;

(47),

              5x=4.8,

           5x÷5=4.8÷5,

               x=0.96;

(48)5x﹣3×=,

        5x﹣=,

    5x﹣+=+,

            5x=,

         5x÷5=÷5,

             x=. 

(49)x=,

  x×=×,

     x=1.5;

(50)x+x=39,

      x=39,

x×=39×,

       x=24; 

(51)7x﹣3x=,

        4x=,

     4x÷4=÷4,

         x=

(52)x+=,

 x+﹣=﹣,

      =,

        x=;

(53)﹣=,

    (﹣)x=,

         x=,

     x÷=÷,

        x= 

(54),

          0.9+x=3.2﹣x+x,

        0.9+x﹣0.9=3.2﹣0.9,

              x=2.3;

(54),

   4.5+2.75x﹣4.5=﹣4.5,

           2.75x=1,

     2.75x÷2.75=12.75,

               x= 

(55)5x﹣=34

      5x﹣+=34+

           5x=34

        5x÷5=34÷5

            x=6.95;

(56)x﹣×6=

       x﹣4.8=

   x﹣4.8+4.8=+4.8

          x=5.55

     x÷=5.55÷

          x=18.5 

(57)x+1.2x=25

     (+1.2)x=25,

          5x=25,

       5x÷5=25÷5,

           x=5;

(58)8﹣4.5x=,

  8﹣4.5x+4.5x=+4.5x,

      +4.5x=8,

+4.5x﹣=8﹣,

          4.5x=4.5,

     4.5x÷4.5=4.5÷4.5,

             x=1;

(59)x﹣0.95×4=8.5,

        x﹣3.8=8.5,

     x﹣3.8+3.8=8.5+3.8,

           x=12.3,

        x÷=12.3÷,

            x=16.4;

(60)2x﹣=2+,

(2x﹣)×2=(2+)×2,

         4x﹣x﹣1=4+x+1,

           3x﹣1=x+5,

         3x﹣1+1=x+5+1,

            3x=x+6,

          3x﹣x=x+6﹣x,

            2x=6,

         2x÷2=6÷2,

             x=3 

(61)x+x=,

          x=;

(62)x﹣=2﹣,

    x﹣x+=2﹣x﹣,

     x+=﹣x,

 x++x=﹣x+x,

x=,

      x=,

 x=,

       x=1 

(63)﹣=2.5,

(﹣)×12=2.5×12,

       4x+8﹣3x+9=30,

            x+17=30,

        x+17﹣17=30﹣17,

              x=13

()x=18,

   x÷=18÷,

      x=27;

(65)x﹣=,

  x﹣+=+,

       x=,

    x÷=÷,

       x=;

(66)x﹣x=,

         x=,

      x÷=÷,

         x= 

(67),

           x=1;

(68),

             x﹣=,

          x﹣+=+,

                x=2 

(69)x﹣x=,

         x=,

      x÷=÷,

         x=;

(70)1.25:0.25=,

          0.25x=1.25×1.6,

          0.25x=2,

    0.25x÷0.25=2÷0.25,

              x=8;

(71)1﹣x=,

 1﹣x+x=+x,

      x+=1,

x+﹣=1﹣,

      x=,

x÷=÷,

    x=;

(72)x+x=,

         x=,

     x÷=÷,

        x=. 

(73)x+x=42,

   (+)x=42,

      x=42,

  x×=42×,

       x=36;

(74)x+0.25=,

     x+0.25=0.25,

x+0.25﹣0.25=0.25﹣0.25,

          x=0;

(75)x=10×,

x×3=×3,

   x=;

(76)x+x=2,

(+)x=2,

      x=2,

   x×=×,

       x=;

(77)x×(1﹣37.5%)=,

          0.625x=,

             x=,

          x×=×,

               x=1;

(78)(x+)=2,

       x+×=2,

        x+=,

    x+﹣=﹣,

          x=,

        x×4=×4,

           x=;

(79)x=50×,

      x=15,

   x×5=15×5,

      x=75;

(80)x+x=42,

(+)x=42,

     x=42,

  x×=42×,

      x=36;

(81)4+x=102,

4+x﹣4=102﹣4,

    x=98,

  x×5=98×5,

      x=490;

(82)X+X=,

      x=,

       x=;

(83)X=,

   X+x=+x,

    ﹣=+x﹣,

        x=;

(84)(1﹣)X=,

x=,

               x=1 

(85)χ﹣χ=,

        χ=,

     χ÷=÷,

         χ=3;

(86)χ=42×,

   χ÷=42×÷,

      χ=42××,

      χ=50;

(87)8x﹣×3=,

        8x﹣=,

     8x﹣+=+,

           8x=12,

        8x÷8=12÷8,

            x=1.5

(88)+=1,

         x+2=4,

       x+2﹣2=4﹣2,

           x=2;

()3x﹣×=50%,

         3x﹣=,

      3x﹣+=+,

            3x=,

         3x÷3=÷3,

             x=

(90)3x﹣x=,

         x=,

      x×=×,

         x= 

(91)+x=,

+x=,

      x=;

(92)﹣x=×,

﹣x+x=+x,

=+x﹣,

        x= 

(93)÷x=0.8,

     ÷x×x=×x,

        x=,

       x=,

    x÷=÷,

        x=,

        x=;

(94)x+5×4=95,

       x+20=95,

x+20﹣20=95﹣20,

       x=75,

    x÷=75÷,

       x=75×,

       x=125;

(95)x﹣x﹣4=18,

(1﹣)x﹣4+4=18﹣4,

          x=14,

        x×4=14×4,

           x=56 

(96)÷ⅹ=,

   ÷x×x=×x,

      x=,

    x×2=×2,

       x=;

(97)x×=4,

 x×÷=4÷,

         x=5;

(98)ⅹ=,

ⅹ×=×,

        x=3;

(99)ⅹ﹣6=7,

   ⅹ﹣6+6=7+6,

       ⅹ=13,

    ⅹ×2=13×2,

        x=26 

(100)+5x=110,

      x+10x=220,

        11x=220,

     11x÷11=220÷11,

          x=20;

(101)x﹣4=60,

     x﹣4+4=60+4,

      x=,

        x=192;

(102)x﹣x=9,

         x=9,

x=9,

           x=30;

(103)x﹣x=3.6,

        x=3.6,

     x÷=3.6,

         x=4.8;

(104)÷x=

      ÷x×x=×x,

    =x,

       x=4;

(105)=9.1,

     ×7=9.1×7,

      x=63.7;

(106)4(+x)=,

         +4x=,

+4x﹣=﹣,

         4x=4,

         x=1;

(107)×0.25+x=,

          0.2+x=,

      0.2+x﹣0.2=﹣0.2,

              x=,

              x= 

(108)x+x=,

          x=,

    x,

          x=;

(109),

    ,

       x=;

(110),

          ,

             x=90;

(111)+3x=,

+3x﹣=﹣,

        3x=,

     3x÷3=÷3,

         x=;

(112)=,

       4x=3×1.2,

       4x=3.6,

    4x÷4=3.6÷4,

        x=0.9 

(113)×﹣X=,

         ﹣X=,

   ﹣X+X=+X,

      +X=,

 +X﹣=﹣,

       X=0

(114)x÷=30,

  x÷×=30×,

         x=25;

(115)﹣x=7,

    (﹣)x=7,

         x=7,

     x×=7×,

          x=20;

(116)x=×10,

       x=8,

x×=8×,

        x=11;

(117)X﹣X=6,

         X=6,

     X÷=6÷,

         X=15;

(118)X﹣2=13,

     X﹣2+2=13+2,

         X=15,

      X÷=15÷,

         X=40

(119)(1﹣)X=480,

            X=480,

        X÷=480÷,

           X=540;

(120)6X+X=39,

       6.5X=39,

  6.5X÷6.5=39÷6.5,

          X=6 

(121)2.4﹣=3.2﹣x,

        0.9=3.2﹣x,

      0.9+x=3.2﹣x+x,

      0.9+x=3.2

  0.9+x﹣0.9=3.2﹣0.9,

          x=2.3;

(122),

x=7,

x÷=7,

         x=;

(123),

           +2.75x=,

       +2.75x﹣=﹣,

             2.75x=,

         2.75x÷2.75=÷2.75,

                x=

(124)X﹣X=,

          X=,

      X÷=÷,

         X=;

(125)6X+4.5=,

6X+4.5﹣4.5=﹣4.5,

        6X=2,

     6X÷6=2÷6,

         X= 

(126)80%X﹣0.6=4.2,

     0.8X﹣0.6+0.6=4.2+0.6,

             0.8X=4.8,

        0.8X÷0.8=4.8÷0.8,

                X=6;

(127)X+X=,

           X=,

      X×=×,

           X= 

(128)X+X=,

         X=,

    X÷=÷,

          X= 

(129)÷x=,

         x=÷,

         x=;

(130)x÷=42,

        x=42×,

        x=9;

(131)x+=,

    x+﹣=﹣,

      x=,

    x÷=÷,

        x=

(132)X﹣=,

   X﹣=,

     X=1,

           x=1;

(133)X+X=3,

           x=3,

       x=3,

           x=3;

(134)X+=×8,

   X+=4﹣,

        X=3,

   X=3,

        x=4

(134),

        3x﹣6+6=8.25+6,

               3x=15,

            3x÷3=15÷3,

                x=5;

(135),

      (+)x=15,

         x×=15×,

            x=12 

(136)x﹣7.5=,

x﹣7.5+7.5=+7.5,

        x=13.75,

x÷=13.75÷,

           x=2.75 

(137)2X+=1,

  2X+﹣=1﹣,

       2x=,

    2x÷2=÷2,

        x=;

(138)X÷=,

 X÷×=×,

         x=;

(139)X﹣X=1.5,

      (﹣)X=1.5,

           X=1.5,

         X×6=1.5×6,

            X=9;

(140)x=28×,

              x=32;

(141)(x+3)×=48,

     0.5x+1.5=48,

 0.5x+1.5﹣1.5=48﹣1.5,

         0.5x=46.5,

      0.5x×2=46.5×2,

            x=93;

(142)x﹣=,

      x=,

   x×=,

     x=,

     x=0.5;

(143),

      5x=3.2×8,

      5x=25.6,

   5x÷5=25.6÷5,

       x=5.12

(144)2÷x=2,

      2÷x×x=2×x,

         22=2x÷2,

              x=1;

(145)3﹣4x=2,

  3﹣4x+4x=2+4x,

    3﹣2=2+4x﹣2,

          1=4x,

       1÷4=4x÷4,

          x=0.25;

(146)x÷=÷

        x÷=,

           x=×,

          x=,

           x=;

(147)÷x=÷.

       ÷x=,

      x=÷,

       x=÷÷,

       x=1. 

(148)X﹣25%X=135,

          0.75X=135,

    0.75X÷0.75=135÷0.75,

              X=180;

(149)X﹣12.5×4=0,

          X﹣50=0,

       X﹣50+50=0+50,

             X=50,

         X÷=50÷,

             X=250

(150)x+×=1,

        x+=1,

 x+,

   x,

        x=;

(151)  x×(﹣)=,

                x=,

              x×12=×12,

                   x=8 

(152)8×﹣1.5x=1.1,

         2﹣1.5x=1.1,

 2﹣1.1+1.5x﹣1.5x=1.1﹣1.1+1.5x,

            1.5x=0.9,

       1.5x÷1.5=0.9÷1.5,

               x=0.6; 

(153)xx=2,

            x=2,

        x×2=2×2,

        x=4

(154)x﹣=,

    x﹣=,

     ,

          x=;

(155)x﹣x=15,

          ,

         x=24 

(156)X÷=,

      X÷×=×,

             x=;

(157)(X﹣)=,

(X﹣)=,

      x﹣,

              x=;

(158)X+X=×,

           x=,

x,

           x=

(159)﹣x=,

     ﹣x+x=+x,

     +x=,

+x﹣=﹣,

      x=;

(160)x+0.75﹣=0.15,

  x+0.75﹣+=0.15+,

        x+0.75=0.75,

   x+0.75﹣0.75=0.75﹣0.75,

             x=0;

(161)2x+=4.625,

  2x+﹣=4.625﹣,

        2x=4,

     2x÷2=4÷2,

         x=2

(162)÷4.8x=15.8,

÷4.8x×4.8x=15.8×4.8x,

         75.84x=,

  75.84x÷75.84=÷75.84,

              x=;

(163)x=14,

         x=14,

x=14,

           x=12 

(1)x+x=2.1,

        x=2.1,

     x×=2.1×,

         x=1.2;

(165)2.7÷120%x=9,

2.7÷1.2x×1.2x=9×1.2x,

         2.7=10.8x,

      2.7÷10.8=10.8x÷10.8,

              x=0.25;

(166)(13﹣X)×=6,

  (13﹣X)××=6×,

           13﹣X+X=8+X,

             13﹣8=8+X﹣8,

                X=5

(167)x﹣21×=4

         x﹣14=4 

    x﹣14+14=4+14

     x=18

            x=60.

(168)1x+x=

           x=

    x=

        x=.

(168)x×(﹣)=

       x×=

    x×=

            x=8

(169)2+x=5,

    2﹣2+x=5﹣2,

              x=5﹣2,

              x=2;

(170)4x﹣=;

  4x﹣+=+;

        4x=1,

     4x÷4=1÷4,

         x= 

(171)x÷=

     x÷×=×

            x=

(172)x﹣x=3

        x=3

     x×=3×

        x=8

(173)6x﹣3.5x=÷

        2.5x=×

        2.5x=0.75

   2.5x÷2.5=0.75÷2.5

           x=0.3

(174)﹣3X=

   ﹣3X+3X=+3X

         =+3X

      ﹣=+3X﹣

         =3X

       ÷3=3X÷3

        X=;

(175)

          x=

       x÷=÷

          x=;

(176)5X﹣3×

        5X﹣2.1=

    5X﹣2.1+2.1=+2.1

            5X=3.5

         5X÷5=3.5÷5

             X=0.7;

(177)x××=5

          x=5

x=5

           x=25

(178)χ=,

   χ=,

       x=;

(179)χ+χ=,

        x=,

x=,

        x= 

(180)x=

   x÷=÷

         x=1.8;

(181)x+15=40

  x+15﹣15=40﹣15

        x=25

    x÷=25÷

        x=35;

(182)x÷=

 x÷×=×

        x=下载本文

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