五年级解方程练习题180题及答案.docx

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五年级解方程练习题180题及答案.docx

五年级解方程练习题180题及答案

五年级解方程

(1)(0.5+x)+x=9.8÷2

(2)2(X+X+0.5)=9.8

(3)25000+x=6x

(4)3200=440+5X+X

(5)X-0.8X=6

(6)12x-8x=4.8

(7)7.5+2X=15

(8)1.2x=81.6

(7)x+5.6=9.4

(10)x-0.7x=3.6

(11)91÷x=1.3

(12)X+8.3=10.7

(13)15x=3

(14)3x-8=16

(15)3x+9=27

(16)18(x-2)=270

(17)12x=300-4x

(18)7x+5.3=7.4

(19)3x÷5=4.8

(25)0.5x+8=43

(26)6x-3x=18

(27)7(6.5+x)=87.5

(28)0.273÷x=0.35

(29)1.8x=0.972

(30)x÷0.756=90

(31)0.1(x+6)=3.3×0.4

(32)(27.5-3.5)÷x=4

(33)9x-40=5

(34)x÷5+9=21

(35)48-27+5x=31

(36)10.5+x+21=56

(37)x+2x+18=78

(38)(200-x)÷5=30

(39)(x-140)÷70=4

(40)20-9x=2

(41)x+19.8=25.8

(42)5.6x=33.6

(43)9.8-x=3.8

(44)75.6÷x=12.6

(45)5x+12.5=32.3

(46)5(x+8)=102

(47)x+3x+10=70

(48)3(x+3)=50-x+3

(49)5x+15=60

(50)3.5-5x=2

(51)0.3×7+4x=12.5

(52)x÷1.5-1.25=0.75

(53)4x-1.3×6=2.6

(54)6x+12.8=15.8

(55)150×2+3x=690

(56)2x-20=4

(57)3x+6=18

(58)2(2.8+x)=10.4

(59)(x-3)÷2=7.5

(60)13.2x+9x=33.3

(61)3x=x+100

(62)x+4.8=7.2

(63)6x+18=48

(64)3(x+2.1)=10.5

(65)12x-9x=8.7

(66)13(x+5)=169

(67)2x-97=34.2

(68)3.4x-48=26.8

(69)42x+25x=134

(70)1.5(x+1.6)=3.6

(71)2(x-3)=5.8

(72)65x+7=137

(73)9x+4×2.5=91

(74)4.2x+2.5x=134

(75)10.5x+6.5x=51

(76)89x-43x=9.2

(77)5x-45=100

(78)1.2x-0.5x=6.3

(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)3.5×2=4.2+x

(86)26×1.5=2x+10

(87)0.5×16―16×0.2=4x

(88)139.25-X=0.403

(89)18.9÷X=0.3

(90)23x=14x+27

(91)x+14x=75

(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

(102)8x-8=6x

(103)

x=20

(104)2x-6=12

(105)7x+7=14

(106)6x-6=0

(107)5x+6=11

(108)2x-8=10

(109)2.5x-8=4

(110)x-

=7

(111)3x+7=28

(112)3x-7=26

(113)9x-x=16

(114)24x+x=50

(115)1.2x-8=4

(116)3x-8=31

(117)6x+6=12

(118)3x-3=3

(119)5x-3x=4

(120)2x+16=19

(121)5x+8=19

(122)14-6x=8

(123)15+6x=27

(124)5-8x=4

(125)7x+8=15

(126)9-2x=1

(127)4+5x=9

(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

(140)6x-3=6

(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)3.5×2=4x

(151)26×1.5=2x

(152)0.5×16―16×0.1=4x

(153)9.26-X=0.402

(154)36.9÷X=0.3

(155)X÷0.5=2.6

(156)93-5x=80

(157)180-6x=54

(158)9+4x=40

(159)0.2x-0.4+0.5=3.7

(160)9.4x-0.4x=16.2

(161)92-4x=20

(162)7x÷6=1.4

(163)16x+34x=1

(164)18x-14x=12

(165)3x-42÷14=15

(166)12+4x=56

 

(167)22-14x=12

(168)X+8.3=10.7

(169)5x=30

(170)x-5.6=9.4

(171)x÷0.8=90

(172)3x-8=16

(173)3x+9=27

(174)5.3+7x=7.4

(175)3x÷5=4.8

(176)X-0.8X=6

(177)12x+8x=4.8

(178)7(x-2)=49

(179)4×8+2x=36

(180)(x-2)÷3=7

(181)x÷5+9=21

(182)(300-x)÷5=30

(183)91÷x=1.3

(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=4.9-0.5

2x=4.4

2x÷2=4.4÷2

X=2.2

(2)2(X+X+0.5)=9.8

2x+2x+1=9.8

4x+1-1=9.8-1

4x=8.8

4x÷4=8.8÷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+X

6x+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÷x×x=1.3×x

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÷7=2.1÷7

X=0.3

(19)3x÷5=4.8

3x÷5×5=4.8×5

3x=24

3x÷3=24÷3

X=8

(20)30÷x+25=85

30÷x+25-25=85-25

30÷x=60

30÷x×x=60×x

30=60x

60x÷60=30÷60

X=0.5

(21)1.4×8-2x=6

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

11.2=6+2x

2x+6-6=11.2-6

2x=5.2

2x÷2=5.2÷2

X=2.6

(22)6x-12.8×3=0.06

6x-38.4=0.06

6x=38.46

6x÷6=38.46÷6

X=6.41

(23)410-3x=170

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

(25)0.5x+8=43

0.5x+8-8=43-8

0.5x=35

0.5x÷0.5=35÷0.5

X=70

(26)6x-3x=18

3x=18

3x÷3=18÷3

X=6

(27)7(6.5+x)=87.5

7x+45.5=87.5

7x+45.5-45.5=87.5-45.5

7x=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÷0.756×0.756=90×0.756

X=68.04

(31)0.1(x+6)=3.3×0.4

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

9x=45

9x÷9=45÷9

X=5

(34)x÷5+9=21

x÷5+9-9=21-9

x÷5=12

x÷5×5=12×5

X=60

(35)48-27+5x=31

5x+21-21=31-21

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)÷5×5=30×5

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)÷70×70=4×70

X-140=280

X-140+140=280+140

X=420

(40)20-9x=2

9x=20-2

9x=18

9x÷9=18÷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=102

5x+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÷4=60÷4

X=15

(48)3(x+3)=50-x+3

3x+9=53-x

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

4x=44

4x÷4=44÷4

X=11

(49)5x+15=60

5x+15-15=60-15

5x=45

5x÷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÷5=1.5÷5

X=0.3

(51)0.3×7+4x=12.5

4x+2.1=12.5

4x+2.1-2.1=12.5-2.1

4x=10.4

4x÷4=10.4÷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÷1.5×1.5=2×1.5

X=3

(53)4x-1.3×6=2.6

4x-1.3×6+1.3×6=2.6+1.3×6

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)150×2+3x=690

3x+300=690

3x+300-300=690-300

3x=390

3x÷3=390÷3

X=130

(56)2x-20=4

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)÷2×2=7.5×2

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

(61)3x=x+100

3x-x=x-x+100

2x=100

2x÷2=100÷2

X=50

(62)x+4.8=7.2

X=7.2-4.8

X=2.4

(63)6x+18=48

6x+18-18=48-18

6x=30

6x÷6=30÷6

x=5

(64)3(x+2.1)=10.5

3x+6.3=10.5

3x=10.5-6.3

3x=4.2

3x÷3=4.2÷3

X=1.4

(65)12x-9x=8.7

3x=8.7

3x÷3=8.7÷3

X=2.9

(66)13(x+5)=169

13x+65=169

13x+65-65=169-65

13x=104

13x÷13=104÷13

X=8

(67)2x-97=34.2

2x-97+97=34.2+97

2x=131.2

2x÷2=131.2÷2

X=65.6

(68)3.4x-48=26.8

3.4x-48+48=26.8+48

3.4x=74.8

3.4x÷3.4=74.8÷3.4

X=22

(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÷2=11.8÷2

X=5.9

(72)65x+7=137

65x+7-7=137-7

65x=130

65x÷65=130÷65

X=2

(73)9x+4×2.5=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

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÷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

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)3.5×2=4.2+x

4.2+x=7

X=7-4.2

X=2.8

(86)26×1.5=2x+10

2x+10=39

2x+10-10=39-10

2x=29

2x÷2=29÷2

X=14.5

(87)0.5×16―16×0.2=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

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+6.7

6.7x=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

2x÷2=8÷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÷6=9÷6

x=1.5

(102)8x-8=6x

8x-8+8=6x+8

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

2x=8

2x÷2=8÷2

X=4

(103)

x=20

x

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