六年级分数方程专项练习180附答案.docx
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六年级分数方程专项练习180附答案.docx
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六年级分数方程专项练习180附答案
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,
(64)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,
(89)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,
(164)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÷=
专项练习参考答案:
(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﹣64=10X+10,
13X﹣64=10X+10,
13X﹣64+64=10X+10+64,
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
(64)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;
(89)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=64,
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=,
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