五年级解方程练习题180题有答案docx.docx
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五年级解方程练习题180题有答案docx
五年级解方程180题有答案
(1)(0.5+x)+x=9.8÷2(12)X+8.3=10.7
(2)2(X+X+0.5)=9.8(13)15x=3
(3)25000+x=6x(14)3x-8=16
(4)3200=440+5X+X(15)3x+9=27
(5)X-0.8X=6(16)18(x-2)=270
(6)12x-8x=4.8(17)12x=300-4x
(7)7.5+2X=15(18)7x+5.3=7.4
(8)1.2x=81.6(19)3x÷5=4.8
(7)x+5.6=9.4(25)0.5x+8=43
(10)x-0.7x=3.6(26)6x-3x=18
(11)91÷x=1.3(27)7(6.5+x)=87.5
1
(28)0.273÷x=0.35(40)20-9x=2
(29)1.8x=0.972(41)x+19.8=25.8
(30)x÷0.756=90(42)5.6x=33.6
(31)0.1(x+6)=3.3×0.4(43)9.8-x=3.8
(32)(27.5-3.5)÷x=4(44)75.6÷x=12.6
(33)9x-40=5(45)5x+12.5=32.3
(34)x÷5+9=21(46)5(x+8)=102
(35)48-27+5x=31(47)x+3x+10=70
(36)10.5+x+21=56(48)3(x+3)=50-x+3
(37)x+2x+18=78(49)5x+15=60
(38)(200-x)÷5=30(50)3.5-5x=2
(39)(x-140)÷70=4(51)0.3×7+4x=12.5
2
(52)x÷1.5-1.25=0.75(64)3(x+2.1)=10.5
(53)4x-1.3×6=2.6(65)12x-9x=8.7
(54)6x+12.8=15.8(66)13(x+5)=169
(55)150×2+3x=690(67)2x-97=34.2
(56)2x-20=4(68)3.4x-48=26.8
(57)3x+6=18(69)42x+25x=134
(58)2(2.8+x)=10.4(70)1.5(x+1.6)=3.6
(59)(x-3)÷2=7.5(71)2(x-3)=5.8
(60)13.2x+9x=33.3(72)65x+7=137
(61)3x=x+100(73)9x+4×2.5=91
(62)x+4.8=7.2(74)4.2x+2.5x=134
(63)6x+18=48(75)10.5x+6.5x=51
3
(76)89x-43x=9.2(88)139.25-X=0.403
(77)5x-45=100(89)18.9÷X=0.3
(78)1.2x-0.5x=6.3(90)23x=14x+27
(79)23.4=2x(91)x+14x=75
(80)4x-x=48.6(92)95-5x=80
(81)4.5x-x=28(93)1.8+6x=54
(82)X-5.7=2.15(94)6.7x-60.3=6.7
(83)5X-2X=18(95)9+4x=53
(84)3X+0.7=7(96)2x+8=16
(85)3.5×2=4.2+x(97)20x-14x=24
(86)26×1.5=2x+10(98)x+7x=8
(87)0.5×16―16×0.2=4x
4
(99)9x-3x=6
(111)3x+7=28
(100)6x-8=4
(112)3x-7=26
(101)5x+x=9
(113)9x-x=16
(102)8x-8=6x
(114)24x+x=50
(103)
4x=20
5
(115)1.2x-8=4
(104)2x-6=12
(116)3x-8=31
(105)7x+7=14
(117)6x+6=12
(106)6x-6=0
(118)3x-3=3
(107)5x+6=11
(119)5x-3x=4
(108)2x-8=10
(120)2x+16=19
(109)2.5x-8=4
(121)5x+8=19
(110)x-
3
4
=7
(122)14-6x=8
5
(123)15+6x=27(135)7x-9=20
(124)5-8x=4(136)x-56=1
(125)7x+8=15(137)8-7x=1
(126)9-2x=1(138)x-30=12
(127)4+5x=9(139)6x-21=21
(128)10-x=8(140)6x-3=6
(129)8x+9=17(141)9x=18
(130)9+6x=15(142)4x-18=14
(131)x+9x=4+7(143)5x+9=11
(132)2x+9=17(144)17-2x=11
(133)8-4x=6(145)x+4+8=23
(134)6x-7=28
6
(146)7x-12=9
(158)9+4x=40
(147)X-5.7=2.15
(159)0.2x-0.4+0.5=3.7
(148)5X-2X=18
(160)9.4x-0.4x=16.2
(149)3X+0.5=5
(161)92-4x=20
(150)3.5×2=4x
(162)7x÷6=1.4
(151)26×1.5=2x
(163)16x+34x=1
(152)0.5×16―16×0.1=4x
(164)18x-14x=12
(153)9.26-X=0.402
(165)3x-42÷14=15
(154)36.9÷X=0.3
(166)12+4x=56
(155)X÷0.5=2.6
(156)93-5x=80(167)22-14x=12
(157)180-6x=54(168)X+8.3=10.7
7
(177)12x+8x=4.8
(169)5x=30
(178)7(x-2)=49
(170)x-5.6=9.4
(179)4×8+2x=36
(171)x÷0.8=90
(180)(x-2)÷3=7
(172)3x-8=16
(181)x÷5+9=21
(173)3x+9=27
(182)(300-x)÷5=30
(174)5.3+7x=7.4
(183)91÷x=1.3
(175)3x÷5=4.8
(176)X-0.8X=6(184)41-3x=17
8
五年级解方程180题答案
X=3.8
(1)(0.5+x)+x=9.8÷2
0.5+2x=4.9
(10)x-0.7x=3.6
0.3x=3.6
0.5+2x-0.5=4.9-0.5
0.3x÷0.3=3.6÷0.3
2x=4.4
X=12
2x÷2=4.4÷2
(11)91÷x=1.3
X=2.2
91÷x×x=1.3×x
(2)2(X+X+0.5)=9.8
1.3x=91
2x+2x+1=9.8
1.3x÷1.3=91÷1.3
4x+1-1=9.8-1
X=70
4x=8.8
(12)X+8.3=10.7
4x÷4=8.8÷4
X+8.3-8.3=10.7-8.3
X=2.2
X=2.4(3)25000+x=6x
(13)15x=3
25000+x-x=6x-x
15x÷15=3÷15
5x=25000
X=0.2
5x÷5=25000÷5
X=5000
(14)3x-8=16
(4)3200=440+5X+X
3x-8+8=16+8
6x+440=3200
3x=24
6x+450-450=3200-440
3x÷3=24÷36x=2760
X=8
6x÷6=2760÷6
(15)3x+9=27
X=460
3x+9-9=27-9
(5)X-0.8X=6
3x=18
0.2x=6
3x÷3=18÷3
0.2x÷0.2=6÷0.2
3x=6
X=30
(16)18(x-2)=270
(6)12x-8x=4.8
18x-36=270
4x=4.8
18x-36+36=270+36
4x÷4=4.8÷4
18x=306
X=1.2
18x÷18=306÷18
(7)7.5+2X=15
X=17
2x+7.5-7.5=15-7.5
(17)12x=300-4x
2x=7.5
12x+4x=300-4x+4x
2x÷2=7.5÷2
16x=300
X=3.75
16x÷16=300÷16
(8)1.2x=81.6
X=18.75
1.2x÷1.2=81.6÷1.2
(18)7x+5.3=7.4
X=68
7x+5.3-5.3=7.4-5.3
(9)x+5.6=9.4
7x=2.1
X+5.6-5.6=9.4-5.6
7x÷7=2.1÷7
9
X=0.33x=18
(19)3x÷5=4.83x÷3=18÷3
3x÷5×5=4.8×5X=6
3x=24(27)7(6.5+x)=87.5
3x÷3=24÷37x+45.5=87.5
X=87x+45.5-45.5=87.5-45.5
(20)30÷x+25=857x=42
30÷x+25-25=85-257x÷7=42÷7
30÷x=60X=6
30÷x×x=60×x
30=60x(28)0.273÷x=0.35
60x÷60=30÷60x=0.273÷0.35
X=0.5X=0.78
(21)1.4×8-2x=6
11.2-2x+2x=6+2x(29)1.8x=0.972
11.2=6+2x1.8x÷1.8=0.972÷1.8
2x+6-6=11.2-6X=0.54
2x=5.2
2x÷2=5.2÷2(30)x÷0.756=90
X=2.6x÷0.756×0.756=90×0.756
(22)6x-12.8×3=0.06X=68.04
6x-38.4=0.06(31)0.1(x+6)=3.3×0.4
6x=38.460.1x+0.6=1.32
6x÷6=38.46÷60.1x+0.6-0.6=1.32-0.6
X=6.410.1x=0.72
(23)410-3x=1700.1x÷0.1=0.72÷0.1
410-3x+3x=170+3xX=7.2
170+3x=410(32)(27.5-3.5)÷x=4
3x+170-170=410-17024÷x=4
3x=240x=24÷4
3x÷3=240÷3X=6
X=80(33)9x-40=5
(24)3(x+0.5)=219x-40+40=5+40
3x+1.5=219x=45
3x+1.5-1.5=21-1.59x÷9=45÷9
3x=19.5X=5
3x÷3=19.5÷3(34)x÷5+9=21
X=6.5x÷5+9-9=21-9
(25)0.5x+8=43x÷5=12
0.5x+8-8=43-8x÷5×5=12×5
0.5x=35X=60
0.5x÷0.5=35÷0.5(35)48-27+5x=31
X=705x+21-21=31-21
(26)6x-3x=185x=10
10
5x÷5=10÷5
X=2(45)5x+12.5=32.3
(36)10.5+x+21=565x+12.5-12.5=32.3-12.5
x+31.5-31.5=56-31.55x=19.8
x=24.55x÷5=19.8÷5
(37)x+2x+18=78X=3.96
3x+18-18=78-18(46)5(x+8)=102
3x=605x+40=102
3x÷3=60÷35x+40-40=102-40
X=205x=62
(38)(200-x)÷5=305x÷5=62÷5
(200-x)÷5×5=30×5X=12.4
200-x=150(47)x+3x+10=70
200-x+x=150+x4x+10=70
150+x=2004x+10-10=70-10
X+150-150=200-1504x=60
X=504x÷4=60÷4
X=15
(39)(x-140)÷70=4(48)3(x+3)=50-x+3
(x-140)÷70×70=4×703x+9=53-x
X-140=2803x+x+9-9=53-x+x-9
X-140+140=280+1404x=44
X=4204x÷4=44÷4
(40)20-9x=2X=11
9x=20-2
9x=18(49)5x+15=60
9x÷9=18÷95x+15-15=60-15
X=25x=45
(41)x+19.8=25.85x÷5=45÷5
X+19.8-19.8=25.8-19.8X=9
X=6(50)3.5-5x=2
3.5-5x+5x=2+5x
(42)5.6x=33.65x+2=3.5
5.6x÷5.6=33.6÷5.65x+2-2=3.5-2
X=65x=1.5
5x÷5=1.5÷5
(43)9.8-x=3.8X=0.3
9.8-x+x=3.8+x(51)0.3×7+4x=12.5
3.8+x=9.84x+2.1=12.5
X=9.8-3.84x+2.1-2.1=12.5-2.1
X=64x=10.4
(44)75.6÷x=12.64x÷4=10.4÷4
X=75.6÷12.6X=2.6
X=6(52)x÷1.5-1.25=0.75
11
x÷1.5-1.25+1.25=0.75+1.2522.2x=33.3
x÷1.5=222.2x÷22.2=33.3÷22.2
x÷1.5×1.5=2×1.5X=1.5
X=3(61)3x=x+100
(53)4x-1.3×6=2.63x-x=x-x+100
4x-1.3×6+1.3×6=2.6+1.3×62x=100
4x=10.42x÷2=100÷2
4x÷4=10.4÷4X=50
X=2.6(62)x+4.8=7.2
(54)6x+12.8=15.8X=7.2-4.8
6x+12.8-12.8=15.8-12.8X=2.4
6x=3(63)6x+18=48
6x÷6=3÷66x+18-18=48-18
X=0.56x=30
6x÷6=30÷6
(55)150×2+3x=690x=5
3x+300=690(64)3(x+2.1)=10.5
3x+300-300=690-3003x+6.3=10.5
3x=3903x=10.5-6.3
3x÷3=390÷33x=4.2
X=1303x÷3=4.2÷3
(56)2x-20=4X=1.4
2x-20+20=4+20(65)12x-9x=8.7
2x=243x=8.7
2x÷2=24÷23x÷3=8.7÷3
X=12X=2.9
(66)13(x+5)=169
(57)3x+6=1813x+65=169
3x+6-6=18-613x+65-65=169-65
3x=1213x=104
3x÷3=12÷313x÷13=104÷13
X=4X=8
(58)2(2.8+x)=10.4(67)2x-97=34.2
5.6+2x=10.42x-97+97=34.2+97
2x+5.6-5.6=10.4-5.62x=131.2
2x=4.82x÷2=131.2÷2
2x÷2=4.8÷2X=65.6
X=2.4
(59)(x-3)÷2=7.5(68)3.4x-48=26.8
(x-3)÷2×2=7.5×23.4x-48+48=26.8+48
X-3=153.4x=74.8
X=183.4x÷3.4=74.8÷3.4
X=22
(60)13.2x+9x=33.3(69)42x+25x=134
12
67x=134X=29
67x÷67=134÷67(78)1.2x-0.5x=6.3
X=20.7x=6.3
(70)1.5(x+1.6)=3.60.7x÷0.7=6.3÷0.7
1.5x+2.4=3.6X=9
1.5x=3.6-2.4(79)23.4=2x
1.5x=1.22x÷2=23.4÷2
1.5x÷1.5=1.2÷1.5X=11.7
X=0.8(80)4x-x=48.6
(71)2(x-3)=5.83x=48.6
2x-6=5.83x÷3=48.6÷3
2x-6+6=5.8+6X=16.2
2x=11.8(81)4.5x-x=28
2x÷2=11.8÷23.5x=28
X=5.93.5x÷3.5=28÷3.5
(72)65x+7=137X=8
65x+7-7=137-7(82)X-5.7=2.15
65x=130X=5.7+2.15
65x÷65=130÷65X=7.85
X=2(83)5X-2X=18
(73)9x+4×2.5=913x=18
9x+10=913x÷3=18÷3
9x+10-10=91-10X=6
9x=81(84)3X+0.7=7
9x÷9=81÷93x+0.7-0.7=7-0.7
X=93x=6.3
3x÷3=6.3÷3
(74)4.2x+2.5x=134X=2.1
6.7x=134(85)3.5×2=4.2+x
6.7x÷6.7=134÷6.74.2+x=7
X=20X=7-4.2
(75)10.5x+6.5x=51X=2.8
17x=51(86)26×1.5=2x+10
17x÷17=51÷172x+10=39
X=32x+10-10=39-10
(76)89x-43x=9.22x=29
46x=9.22x÷2=29÷2
46x÷46=9.2÷46X=14.5
X=0.2(87)0.5×16―16×0.2=4x
4x=4.8
(77)5x-45=1004x÷4=4.8÷4
5x-45+45=100+45X=1.2
5x=145(88)139.25-X=0.403
5x÷5=145÷5X=139.25-0.403
13
X=138.8478x=8
(89)18.9÷X=0.3X=1
X=18.9÷0.3(99)9x-3x=6
X=636x=6
(90)23x=14x+27X=1
23x-14x=14x-14x+27(100)6x-8=4
9x=276x-8+8=4+8
9x÷9=27÷96x=12
X=3X=2
(91)x+14x=75(101)5x+x=9
15x=756x=9
15x÷15=75÷156x÷6=9÷6
X=5x=1.5
(92)95-5x=80(102)8x-8=6x
95-5x+5x=80+5x8x-8+8=6x+8
5x+80=958x-6x=6x-6x+8
5x+80-80=95-802x=8
5x=152x÷2=8÷2
X=3X=4
(93)1.8+6x=54
6x=54-1.8
(103)
4
5
x=20
6x=52.2
6x÷6=52.2÷6
4
5
x÷
4
5
=20÷
4
5
X=25
X=8.7
(104)2x-6=12
(94)6.7x-60.3=6.7
2x-6+6=12+6
6.7x=60.3+6.7
2x=18
6.7x=67
2x÷2=18÷2
6.7x÷6.7=67÷6.7
X=9
X=10
(105)7x+7=14
(95)9+4x=53
7x+7-7=14-7
4x=53-9
7x=7
4x=44
7x÷7=7÷7
4x÷4=44÷4
X=1
X=11
(106)6x-6=0
(96)2x+8=16
6x-6+6=0+6
2x=16-8
6x=6
2x=8
X=1
2x÷2=8÷2
(107)5x+6=11
X=4
5x+6-6=11-6
(97)20x-14x=24
5x=5
6x=24
X=1
6x÷6=24÷6
(108)2x-8=10
X=4
2x-8+8=10+8
(98)x+7x=8
2x=18
14
X=93x=6
(109)2.5x-8=43x÷3=6÷3
2.5x-8+8=4+8X=2
2.5x=12(119)5x-3x=4
2.5x÷2.5=12÷2.52x=4
X=4.82x÷2=4÷2
(110)x-
3
4
=7
X=2
(120)2x+16=19
X-
3
4
+
3
4
=7+
3
4
2x+16-16=19-16
2x=3
X=7.75
2x÷