五年级解方程练习题180题有答案2.docx

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五年级解方程练习题180题有答案2

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

(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)=3.3X0.4

(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)0.3X7+4x=12.5

(52)x-1.5-1.25=0.75

(64)3(x+2.1)=10.5

(53)4x-1.3X6=2.6

(65)12x-9x=8.7

(54)6x+12.8=15.8

(66)13(x+5)=169

(55)150X2+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+4X2.5=91

(62)x+4.8=7.2

(74)4.2x+2.5x=134

(63)6x+18=48

(75)10.5x+6.5x=51

(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)3.5X2=4.2+x

(97)20x-14x=24

(86)26X1.5=2x+10

(98)x+7x=8

(87)0.5X16—16X0.2=4x

(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

3

(110)x-3=7

4

(121)5x+8=19

(122)14-6x=8

 

(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-2仁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

(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)3.5X2=4x

(162)7x-6=1.4

(151)26X1.5=2x

(163)16x+34x=1

 

 

(152)0.5X16—16X0.仁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

 

(177)12x+8x=4.8

(169)5x=30

(178)7(x-2)=49

(170)x-5.6=9.4

(179)4X8+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

 

五年级解方程180题答案

 

(1)(0.5+x)+x=9.8-2

0.5+2x=4.9

0.5+2x-0.5=4.9-0.52x=4.4

2x-2=4.4-2

X=2.2

(2)2(X+X+0.5)=9.82x+2x+1=9.8

4x+1-1=9.8-1

4x=8.8

4x十4=8.8十4

X=2.2

(3)25000+x=6x

25000+x-x=6x-x

5x=25000

5x-5=25000-5

X=5000

(4)3200=440+5X+X6x+440=3200

6x+450-450=3200-4406x=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十4=4.8十4

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

(15)3x+9=27

3x+9-9=27-9

3x=18

3x-3=18-3

3x=6

(16)18(x-2)=270

18x-36=270

18x-36+36=270+36

18x=306

18x-18=306-18

X=17

(17)12x=300-4x

12x+4x=300-4x+4x

16x=300

16x-16=300-16

X=18.75

(18)7x+5.3=7.4

7x+5.3-5.3=7.4-5.3

7x=2.1

7x

 

X=0.3

3x=18

(19)3x-5=4.8

3x-3=18-3

3x-5X5=4.8X5

X=6

3x=24

(27)7(6.5+x)=87.5

3x-3=24-3

7x+45.5=87.5

X=8

7x+45.5-45.5=87.5-45.5

(20)30-x+25=85

7x=42

30-x+25-25=85-25

7x-7=42-7

30-x=60

X=6

30-xXx=60Xx

30=60x

(28)0.273-x=0.35

60x-60=30-60

x=0.273

—0.35

X=0.5

X=0.78

(21)1.4X8-2x=6

11.2-2x+2x=6+2x

(29)1.8x=0.972

11.2=6+2x

1.8x-1.8=0.972-

1.8

2x+6-6=11.2-6

X=0.54

2x=5.2

2x十2=5.2十2

(30)x-0.756=90

X=2.6

x-0.756X0.756=90X0.756

(22)6x-12.8X3=0.06

X=68.04

6x-38.4=0.06

(31)0.1(x+6)=3.3

X0.4

6x=38.46

0.1x+0.6=1.32

6x-6=38.46十6

0.1x+0.6-0.6=1.32-0.6

X=6.41

0.1x=0.72

(23)410-3x=170

0.1x-0.1=0.72

-0.1

410-3x+3x=170+3x

X=7.2

170+3x=410

(32)(27.5-3.5)-x=4

3x+170-170=410-170

24-x=4

3x=240

x=24

十4

3x-3=240-3

X=6

X=80

(33)9x-40=5

(24)3(x+0.5)=21

9x-40+40=5+40

3x+1.5=21

9x=45

3x+1.5-1.5=21-1.5

9x十9=45十9

3x=19.5

X=5

3x—3=19.5—3

(34)x-5+9=21

X=6.5

x十5+9-9=21-9

(25)0.5x+8=43

x-5=12

0.5x+8-8=43-8

x—5X5=12X5

0.5x=35

X=60

0.5x—0.5=35—0.5

(35)48-27+5x=31

X=70

5x+21-2仁31-21

(26)6x-3x=18

5x=10

5x

-5=10-5

X=2

(36)10.5+x+21=56

x+31.5-31.5=56-31.5

x=24.5

(37)x+2x+18=78

3x+18-18=78-18

3x=60

3x—3=60—3

X=20

(38)(200-x)-5=30

(200-x)-5X5=30X5

200-x=150

200-x+x=150+x

150+x=200

X+150-150=200-150

X=50

(39)(x-140)-70=4

(x-140)-70X70=4X70

X-140=280

X-140+140=280+140X=420

(40)20-9x=2

9x=20-2

9x=18

9x十9=18十9

X=2

(41)x+19.8=25.8

X+19.8-19.8=25.8-19.8

X=6

(42)5.6x=33.6

5.6x—5.6=33.6—5.6

X=6

(43)9.8-x=3.8

9.8-x+x=3.8+x

3.8+x=9.8

X=9.8-3.8

X=6

(44)75.6-x=12.6

X=75.6-12.6

X=6

(45)5x+12.5=32.3

5x+12.5-12.5=32.3-12.5

5x=19.8

5x-5=19.8-5

X=3.96

(46)5(x+8)=102

5x+40=1025x+40-40=102-40

5x=62

5x—5=62—5

X=12.4

(47)x+3x+10=70

4x+10=70

4x+10-10=70-10

4x=60

4x十4=60十4

X=15

(48)3(x+3)=50-x+33x+9=53-x

3x+x+9-9=53-x+x-9

4x=44

4x十4=44十4

X=11

(49)5x+15=60

5x+15-15=60-15

5x=45

5x十5=45—5

X=9

(50)3.5-5x=2

3.5-5x+5x=2+5x

5x+2=3.5

5x+2-2=3.5-2

5x=1.5

5x十5=1.5十5

X=0.3

(51)0.3X7+4x=12.5

4x+2.1=12.5

4x+2.1-2.1=12.5-2.1

4x=10.4

4x十4=10.4十4

X=2.6

(52)x-1.5-1.25=0.75

x-1.5-1.25+1.25=0.75+1.25

22.2x=33.3

x-1.5=2

22.2x-22.2=33.3-22.2

x-1.5X1.5=2X1.5

X=1.5

X=3

(61)3x=x+100

(53)4x-1.3X6=2.6

3x-x=x-x+100

4x-1.3X6+1.3X6=2.6+1.3X6

2x=100

4x=10.4

2x十2=100十2

4x十4=10.4十4

X=50

X=2.6

(62)x+4.8=7.2

(54)6x+12.8=15.8

X=7.2-4.8

6x+12.8-12.8=15.8-12.8

X=2.4

6x=3

(63)6x+18=48

6x—6=3—6

6x+18-18=48-18

X=0.5

6x=30

6x—6=30*6

(55)150X2+3x=690

x=5

3x+300=690

(64)3(x+2.1)=10.5

3x+300-300=690-300

3x+6.3=10.5

3x=390

3x=10.5-6.3

3x-3=390-3

3x=4.2

X=130

3x*3=4.2*3

(56)2x-20=4

X=1.4

2x-20+20=4+20

(65)12x-9x=8.7

2x=24

3x=8.7

2x十2=24十2

3x*3=8.7*3

X=12

X=2.9

(66)13(x+5)=169

(57)3x+6=18

13x+65=169

3x+6-6=18-6

13x+65-65=169-65

3x=12

13x=104

3x-3=12-3

13x*13=104*13

X=4

X=8

(58)2(2.8+x)=10.4

(67)2x-97=34.2

5.6+2x=10.4

2x-97+97=34.2+97

2x+5.6-5.6=10.4-5.6

2x=131.2

2x=4.8

2x*2=131.2*2

2x十2=4.8十2

X=65.6

X=2.4

(59)(x-3)-2=7.5

(68)3.4x-48=26.8

(x-3)-2X2=7.5X2

3.4x-48+48=26.8+48

X-3=15

3.4x=74.8

X=18

3.4x*3.4=74.8*3.4

X=22

(60)13.2x+9x=33.3

(69)42x+25x=134

67x=134

67x-67=134-67

X=2

(70)1.5(x+1.6)=3.6

1.5x+2.4=3.6

1.5x=3.6-2.4

1.5x=1.2

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十2=11.8十2

X=5.9

(72)65x+7=137

65x+7-7=137-7

65x=130

65x-65=130-65

X=2

(73)9x+4X2.5=91

9x+10=91

9x+10-10=91-10

9x=81

9x十9=81十9

X=9

(74)4.2x+2.5x=134

6.7x=134

6.7x-6.7=134-6.7

X=20

(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十5=145十5

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十2=23.4十2

X=11.7

(80)4x-x=48.6

3x=48.6

3x—3=48.6—3

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+10-10=39-10

2x=29

2x十2=29十2

X=14.5

(87)0.5X16—16X0.2=4x

4x=4.8

4x十4=4.8十4

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十9=27十9

X=3

(91)x+14x=75

15x=75

15x-15=75-15

X=5

(92)95-5x=80

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=52.2-6

X=8.7

(94)6.7x—60.3=6.7

6.7x=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十4=44十4

X=11

(96)2x+8=16

2x=16-8

2x=8

2x十2=8十2

X=4

(97)20x-14x=24

6x=24

6x—6=24—6

X=4

(98)x+7x=8

8x=8

X=1

(99)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

x=1.5

(102)8x-8=6x

8x-8+8=6x+8

8x-6x=6x-6x+8

2x=8

2x

X=4

(103)

4x=20

5

4x+4=20+4

555

X=25

(104)2x-6=12

2x-6+6=12+6

2x=18

2x

X=9

(105)7x+7=14

7x+7-7=14-7

7x=7

7x-7=7-7

X=1

(106)6x-6=0

6x-6+6=0+6

6x=6

X=1

(107)5x+6=11

5x+6-6=11-65x=5X=1

(108)2x-8=10

2x-8+8=10+8

2x=18

 

3x=6

3x—3=6—3

X=2

(119)5x-3x=4

2x=4

2x十2=4十2X=2

(120)2x+16=192x+16-16=19-16

2x=3

2x十2=3十2

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