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.docx

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=

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