五年级解方程练习及答案.docx
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五年级解方程练习及答案
五年级解方程题有答案
(12)X+8.3=10.7
(1)(0.5+x)+x=9.8十2
(13)15x=3
(2)2(X+X+0.5)=9.8
(14)3x-8=16
(3)25000+x=6x
(15)3x+9=27
(4)3200=440+5X+X
(16)18(x-2)=270
(5)X-0.8X=6
(17)12x=300-4x
(6)12x-8x=4.8
(18)7x+5.3=7.4
(7)7.5+2X=15
(19)3x十5=4.8
(8)1.2x=81.6
(25)0.5x+8=43
(7)x+5.6=9.4
(26)6x-3x=18
(10)x-0.7x=3.6
(27)7(6.5+x)=87.5
(11)91十x=1.3
(28)0.273-x=0.35
(29)
1.8x=0.972
(42)
5.6x=33.6
(30)
x十0.756=90
(43)
9.8-x=3.8
(31)
0.1(x+6)=3.3X0.4
(44)
75.6*x=12.6
(32)
(27.5-3.5)十x=4
(45)
5x+12.5=32.3
(33)
9x-40=5
(46)
5(x+8)=102
(34)
x*5+9=21
(47)
x+3x+10=70
(35)
48-27+5x=31
(48)
3(x+3)=50-x+3
(36)
10.5+x+21=56
(49)
5x+15=60
(37)
x+2x+18=78
(50)
3.5-5x=2
(38)
(200-x)-5=30
(51)
0.3X7+4x=12.5
(39)
(x-140)*70=4
(40)
20-9x=2
(52)
x*1.5-1.25=0.75
(41)
x+19.8=25.8
(53)
4x-1.3X6=2.6
(66)13(x+5)=169
(54)6x+12.8=15.8
(67)2x-97=34.2
(55)150X2+3x=690
(68)3.4x-48=26.8
(56)2x-20=4
(69)42x+25x=134
(57)3x+6=18
(70)1.5(x+1.6)=3.6
(58)2(2.8+x)=10.4
(71)2(x-3)=5.8
(59)(x-3)十2=7.5
(72)65x+7=137
(60)13.2x+9x=33.3
(73)9x+4X2.5=91
(61)3x=x+100
(74)4.2x+2.5x=134
(62)x+4.8=7.2
(75)10.5x+6.5x=51
(63)6x+18=48
(76)89x-43x=9.2
(64)3(x+2.1)=10.5
(77)5x-45=100
(65)12x-9x=8.7
(78)1.2x-0.5x=6.3
(91)x+14x=75
(79)23.4=2x
(80)4x-x=48.6
(81)4.5x-x=28
(82)X-5.7=2.15
(83)5X-2X=18
(84)3X+0.7=7
(85)3.5X2=4.2+x
(86)26X1.5=2x+10
(87)0.5X16—6X0.2=4x
(88)139.25—X=0.403
(89)18.9^X=0.3
(92)95—5x=80
(93)1.8+6x=54
(94)6.7x—60.3=6.7
(95)9+4x=53
(96)2x+8=16
(97)20x-14x=24
(98)x+7x=8
(99)9x-3x=6
(100)6x-8=4
(101)5x+x=9
(90)23x=14x+27
(102)8x-8=6x
(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
(122)14-6x=8
(110)
x-3=7
4
(123)15+6x=27
(111)3x+7=28
(124)5-8x=4
(112)3x-7=26
(125)7x+8=15
(113)9x-x=16
(126)9-2x=1
(114)24x+x=50
(127)4+5x=9
(140)6x-3=6
(128)10-x=8
(129)8x+9=17
(130)9+6x=15
(131)x+9x=4+7
(132)2x+9=17
(133)8-4x=6
(134)6x-7=28
(135)7x-9=20
(136)x-56=1
(137)8-7x=1
(138)x-30=12
(139)6x-21=21
(141)9x=18
(142)4x-18=14
(143)5x+9=11
(144)17-2x=11
(145)x+4+8=23
(146)7x-12=9
(147)X-5.7=2.15
(148)5X-2X=18
(149)3X+0.5=5
(150)3.5X2=4x
(151)26X1.5=2x
(152)0.5X16—6X0.1=4x
(164)18x—14x=12
(153)9.26—X=0.402
(165)3x—42十14=15
(166)
(154)36.9^X=0.3
12+4x=56
(155)X-X).5=2.6
(167)22—14x=12
(156)93—5x=80
(168)X+8.3=10.7
(157)180-6x=54
(169)5x=30
(158)9+4x=40
(170)x-5.6=9.4
(159)0.2x—0.4+0.5=3.7
(171)x十0.8=90
(160)9.4x—0.4x=16.2
(172)3x—8=16
(161)92—4x=20
(173)3x+9=27
(162)7x为=1.4
(174)5.3+7x=7.4
(163)16x+34x=1
(175)3x十5=4.8
(176)X-0.8X=6
(181)x十5+9=21
(177)12x+8x=4.8
(182)(300-x)-5=30
(178)7(x-2)=49
(183)91-x=1.3
(179)4X8+2x=36
(184)41-3x=17
(180)(x-2)十3=7
五年级解方程180题答案
2x+2x+仁9.8
(1)(0.5+x)+x=9.8-2
4x+1-1=9.8-1
0.5+2x=4.9
4x=8.8
0.5+2x-0.5=4.9-0.5
4x-4=8.8—4
2x=4.4
X=2.2
2x—2=4.4—2
(3)25000+x=6x
X=2.2
25000+x-x=6x-x
(2)2(X+X+0.5)=9.8
5x=25000
5x+5=25000-5
X=5000
(4)3200=440+5X+X6x+440=3200
6x+450-450=3200-440
6x=2760
6x+6=2760*6
X=460
(5)X-0.8X=6
0.2x=6
0.2x+0.2=6-0.2
X=30
(6)12x-8x=4.8
4x=4.8
4x+4=4.8+4
X=1.2
(7)7.5+2X=15
2x+7.5-7.5=15-7.5
2x=7.5
2x+2=7.5-2
X=3.75
(8)1.2x=81.6
1.2x+1.2=81.6+1.2
X=68
(9)x+5.6=9.4
X+5.6-5.6=9.4-5.6
X=3.8
(10)x-0.7x=3.6
0.3x=3.6
0.3x+0.3=3.6+0.3
X=12
(11)91+x=1.3
91+xXx=1.3Xx
1.3x=91
1.3x+1.3=91+1.3
X=70
(12)X+8.3=10.7
X+8.3-8.3=10.7-8.3
X=2.4
(13)15x=3
15x+15=3+15
X=0.2
(14)3x-8=16
3x-8+8=16+8
3x=24
3x+3=24+3
X=8
3x=24
(15)3x+9=27
3x-3=24-3
3x+9-9=27-9
X=8
3x=18
(20)
30-x+25=85
3x-3=18-3
30-x+25-25=85-25
3x=6
30-x=60
(16)18(x-2)=270
30-xXx=60Xx
18x-36=270
30=60x
18x-36+36=270+36
60x-60=30-60
18x=306
X=0.5
18x-18=306-18
(21)
1.4X8-2x=6
X=17
11.2-2x+2x=6+2x
(17)12x=300-4x
11.2=6+2x
12x+4x=300-4x+4x
2x+6-6=11.2-6
16x=300
2x=5.2
16x-16=300-16
2x-2=5.2+2
X=18.75
X=2.6
(18)7x+5.3=7.4
(22)
6x-12.8X3=0.06
7x+5.3-5.3=7.4-5.3
6x-38.4=0.06
7x=2.1
6x=38.46
7x-7=2.1-7
6x-6=38.46-6
X=0.3
X=6.41
(19)3x-5=4.8
(23)
410-3x=170
3x-5X5=4.8X5
410-3x+3x=170+3x
170+3x=410
3x+170-170=410-170
3x=240
3x-3=240-3
X=80
(24)3(x+0.5)=21
3x+1.5=21
3x+1.5-1.5=21-1.5
3x=19.5
3x-3=19.5—3
X=6.5
40.5x+8=43
0.5x+8-8=43-8
0.5x=35
0.5x*0.5=35*0.5
X=70
56x-3x=18
3x=18
3x-3=18-3
X=6
67(6.5+x)=87.5
7x+45.5=87.57x+45.5-45.5=87.5-45.57x=42
7x-7=42-7
X=6
(28)0.273-x=0.35
x=0.273-0.35
X=0.78
(29)1.8x=0.972
1.8x-1.8=0.972-1.8
X=0.54
(30)x-0.756=90
x-0.756X0.756=90X0.756
X=68.04
(31)0.1(x+6)=3.3X0.4
0.1x+0.6=1.32
0.1x+0.6-0.6=1.32-0.6
0.1x=0.72
0.1x-0.1=0.72-0.1
X=7.2
(32)(27.5-3.5)-x=4
24-x=4
x=24-4
X=6
(33)9x-40=5
9x-40+40=5+40
200-x=150
9x=45
200-x+x=150+x
9x+9=45+9
150+x=200
X=5
X+150-150=200-150
(34)
x+5+9=21
X=50
x+5+9-9=21-9
(39)
(x-140)+70=4
x+5=12
(x-140)+70X70=4X70
x+5X5=12X5
X-140=280
X=60
X-140+140=280+140
(35)
48-27+5x=31
X=420
5X+21-2仁31-21
(40)
20-9x=2
5x=10
9x=20-2
5x+5=10+5
9x=18
X=2
9x+9=18+9
(36)
10.5+x+21=56
X=2
x+31.5-31.5=56-31.5
(41)
x+19.8=25.8
x=24.5
X+19.8-19.8=25.8-19.8
(37)
x+2x+18=78
X=6
3x+18-18=78-18
3x=60
(42)
5.6x=33.6
3x+3=60+3
5.6x
+5.6=33.6+5.6
X=20
X=6
(38)
(200-x)+5=30
(43)
9.8-x=3.8
(200-x)+5X5=30X5
9.8-x+x=3.8+x
X=15
3.8+x=9.8
(48)3(x+3)=50-x+3
X=9.8-3.8
3x+9=53-x
X=6
3x+x+9-9=53-x+x-9
(44)75.6+x=12.6
4x=44
X=75.6-12.6
4x—4=44—4
X=6
X=11
(45)5x+12.5=32.3
(49)5x+15=60
5x+12.5-12.5=32.3-12.5
5x+15-15=60-15
5x=19.8
5x=45
5x-5=19.8-5
5x—5=45—5
X=3.96
X=9
(46)5(x+8)=102
(50)3.5-5x=2
5x+40=102
3.5-5x+5x=2+5x
5x+40-40=102-40
5x+2=3.5
5x=62
5x+2-2=3.5-2
5x-5=62—5
5x=1.5
X=12.4
5x—5=1.5—5
(47)x+3x+10=70
X=0.3
4x+10=70
(51)0.3X7+4x=12.5
4x+10-10=70-10
4x+2.1=12.5
4x=60
4x+2.1-2.1=12.5-2.1
4x—4=60—4
4x=10.4
X=2.6
(52)x+1.5-1.25=0.75
x+1.5-1.25+1.25=0.75+1.25
x+1.5=2
x+1.5X1.5=2X1.5
X=3
(53)4x-1.3X6=2.6
4x-1.3X6+1.3X6=2.6+1.3X6
4x=10.4
4x+4=10.4+4
X=2.6
(54)6x+12.8=15.8
6x+12.8-12.8=15.8-12.8
6x=3
6x*6=3+6
X=0.5
(55)150X2+3x=690
3x+300=690
3x+300-300=690-300
3x=390
3x+3=390+3
X=130
2x-20+20=4+20
2x=24
2x+2=24+2
X=12
(57)3x+6=18
3x+6-6=18-6
3x=12
3x+3=12+3
X=4
(58)2(2.8+x)=10.4
5.6+2x=10.4
2x+5.6-5.6=10.4-5.6
2x=4.8
2x+2=4.8+2
X=2.4
(59)(x-3)+2=7.5
(x-3)+2X2=7.5X2
X-3=15
X=18
(60)13.2x+9x=33.3
22.2x=33.3
22.2x+22.2=33.3+22.2
X=1.5
(66)13(x+5)=169
(61)3x=x+100
13x+65=169
3x-x=x-x+100
13x+65-65=169-65
2x=100
13x=104
2x+2=100+2
13x+13=104+13
X=50
X=8
(62)x+4.8=7.2
(67)2x-97=34.2
X=7.2-4.8
2x-97+97=34.2+97
X=2.4
2x=131.2
(63)6x+18=48
2x+2=131.2+2
6x+18-18=48-18
X=65.6
6x=30
(68)3.4x-48=26.8
6x+6=30*6
3.4x-48+48=26.8+48
x=5
3.4x=74.8
(64)3(x+2.1)=10.5
3.4x+3.4=74.8+3.4
3x+6.3=10.5
X=22
3x=10.5-6.3
(69)42x+25x=134
3x=4.2
67x=134
3x+3=4.2+3
67x-67=134-67
X=1.4
X=2
(65)12x-9x=8.7
(70)1.5(x+1.6)=3.6
3x=8.7
1.5x+2.4=3.6
3x+3=8.7+3
1.5x=3.6-2.4
X=2.9
1.5x-1.5=1.2-1.5
X=0.8
(71)2(x-3)=5.8
2x-6=5.8
2x-6+6=5.8+6
2x=11.8
2x-2=11.8-2
X=5.9
(72)65x+7=137
65x+7-7=137-7
65x=130
65x北5=130-65
X=2
(73)9x+4X2.5=91
9x+10=91
9x+10-10=91-10
9x=81
9x-9=81-9
X=9
(74)4.2x+2.5x=134
6.7x=134
6.7x+6.7=134-6.7
(75)10.5x+6.5x=51
17x=51
17x-17=51-17
X=3
(76)89x-43x=9.2
46x=9.2
46x-46=9.2-46
X=0.2
(77)5x-45=100
5x-45+45=100+45
5x=145
5x+5=145-5
X=29
(78)1.2x-0.5x=6.3
0.7x=6.3
0.7x-0.7=6.3-0.7
X=9
(79)23.4=2x
2x-2=23.4-2
X=11.7
(80)4x-x=48.6
3x=48.6
X=16.2
(81)4.5x-x=28
3.5x=28
3.5x*3.5=28*3.5
X=8
(82)X-5.7=2.15
X=5.7+2.15
X=7.85
(83)5X-2X=18
3x=18
3x*3=18*3
X=6
(84)3X+0.7=7
3x+0.7-0.7=7-0.7
3x=6.3
3x*3=6.3*3
X=2.1
(85)3.5X2=4.2+x
4.2+x=7
X=7-4.2
X=2.8
(86)26X1.5=2x+10
2x+10=39
2x=29
2x*2=29*2
X=14.5
(87)0.5X16—6X0.2=4x
4x=4.8
4x*4=4.8*4
X=1.2
(88)139.25—X=0.403
X=139.25-0.403
X=138.847
(89)18.9*X=0.3
X=18.9-0.3
X=63
(90)23x=14x+27
23x-14x=14x-14x+27
9x=27
9x*9=27*9
X=3
(91)x+14x=75
15x=75
15x*15=75*15
X=5
(92)95—5x=80
X=4
(167)20x-14x=24
6x=24
6x北=24-6
X=4
(168)x+7x=8
8x=8
X=1
(169)9x-3x=6
6x=6
X=1
(100)6x-8=4
6x-8+8=4+8
6x=12
X=2
(101)5x+x=9
6x=9
6x*6=9-6x=1.5
(102)8x-8=6x
8x-8+8=6x+8
8x-6x=6x-6x+8
2x=8
95-5x+5x=80+5x
5x+80=95
5x+80-80=95-80
5x=15
X=3
(93)1.8+6x=54
6x=54-1.8
6x=52.2
6x-6=52.2北X=8.7
(94)6.7x-60.3=6.76.7x=60.3+6.76.7x=67
6.7x-6.7=67-6.7
X=10
(95)9+4x=53
4x=53-9
4x=44
4x-4=44—4
X=11
(96)2x+8=16
2x=16-8
2x=8
X=4
2x=18
(103)
4
x=20
5
X=9
744
—x——=20——
855
(109)
2.5x-8=4
X=25
2.5x-8+8=4+8
(104)
2x-6=12
2.5x=12
2x-6+6=12+6
2.5x-2.5=12+2.5
2x=18
X=4.8
2x+2=18+2
(110)
3
x=7
4
X=9
333
X+—=7+
444
(105)
7x+7=14
X=7.75
7x+7-7=14-7
(111)
3x+7=