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*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廿=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-x=1.3

(28)

0.273*0.35

(40)

20-9x=2

(29)

1.8x=0.972

(41)

x+19.8=25.8

(30)

xP.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)-nx=4

(44)

75.6-(=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)廿=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)十2=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*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)9

x-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)

4

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)

37

x-一=7

4

(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空=0.3

(166)12+4x=56

(155)X-X).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廿+9=21

(173)3x+9=27

(182)(300-x)廿=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=4.9-0.5

2x=4.4

2x-2=4.4-2

X=2.2

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

2x+2x+仁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廿=25000-5

X=5000

(4)3200=440+5X+X

6x+440=3200

6x+450-450=3200-440

6x=2760

6x-5=2760-5

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

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-).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

(9)x+5.6=9.4

(18)

7x+5.3=7.4

0.5x=35

7x+5.3-5.3=7.4-5.3

0.5x*0.5=35-0.5

7x=2.1

X=70

7x-7=2.1-7

(26)

6x-3x=18

X=0.3

3x=18

(19)

3x廿=4.8

3x-3=18-3

3x廿X5=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£+25=85

7x=42

30+x+25-25=85-25

7x-7=42—

30-c=60

X=6

30-xXx=60Xx

30=60x

(28)

0.273-x=0.35

60x北0=30北0

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+2=5.2—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)=3.3X0.4

6x=38.46

0.1x+0.6=1.32

6x北=38.46北

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=24-4

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-9=45+9

3x=19.5

X=5

3x-3=19.5-3

(34)

x-5+9=21

X=6.5

x-5+9-9=21-9

(25)

0.5x+8=43

x-5=12

0.5x+8-8=43-8

x+5X5=12X5

X=60

X=6

(35)

48-27+5x=31

(44)75.6-x=12.6

5x+21-2仁31-21

X=75.6-12.6

5x=10

5x-5=10廿

X=6

X=2

(45)5x+12.5=32.3

(36)

10.5+x+21=56

5x+12.5-12.5=32.3-12.5

x+31.5-31.5=56-31.5

5x=19.8

x=24.5

5x廿=19.8-5

(37)

x+2x+18=78

X=3.96

3x+18-18=78-18

(46)5(x+8)=102

3x=60

5x+40=102

3x-3=60—3

5x+40-40=102-40

X=20

5x=62

(38)

(200-x)-5=30

5x-h5=62廿

(200-x)-5X5=30X5

X=12.4

200-x=150

(47)x+3x+10=70

200-x+x=150+x

4x+10=70

150+x=200

4x+10-10=70-10

X+150-150=200-150

4x=60

X=50

4x—4=60—4

X=15

(39)

(x-140)-70=4

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

(x-140)-70X70=4X70

3x+9=53-x

X-140=280

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

X-140+140=280+140

4x=44

X=420

4x—4=44—4

(40)20-9x=2

9x=20-2

X=11

9x=18

(49)5x+15=60

9x+9=18+9

5x+15-15=60-15

X=2

5x=45

(41)

x+19.8=25.8

5x+5=45—5

X+19.8-19.8=25.8-19.8

X=9

X=6

(50)3.5-5x=2

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

(42)

5.6x=33.6

5x+2=3.5

5.6x弋.6=33.6*5.6

5x+2-2=3.5-2

X=6

5x=1.5

5x廿=1.5-5

(43)9.8-x=3.8

X=0.3

9.8-x+x=3.8+x

(51)0.3X7+4x=12.5

3.8+x=9.8

4x+2.1=12.5

X=9.8-3.8

4x+2.1-2.1=12.5-2.1

4x=10.4

X-3=15

4x-^4=10.4+4

X=18

X=2.6

(52)x+1.5-1.25=0.75

(60)13.2x+9x=33.3

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+2=100+2

4x+4=10.4+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+5=30+5

(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+2=24+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+2=4.8+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

4x=4.8

4x+4=4.8*4

X=1.2

6x=24

6x*6=24*6

(88)139.25-X=0.403

X=4

X=139.25-0.403

(98)x+7x=8

X=138.847

8x=8

(89)18.9+X=0.3

X=1

X=18.9-0.3

(99)9x-3x=6

X=63

6x=6

(90)23x=14x+27

X=1

23x-14x=14x-14x+27

(100)1

5x-8=4

9x=27

6x-8+8=4+8

9x+9=27*9

6x=12

X=3

X=2

(91)x+14x=75

(101)

5x+x=9

15x=75

6x=9

15x+15=75+15

6x+5=9+5

X=5

x=1.5

(92)95-5x=80

(102)

8x-8=6x

95-5x+5x=80+5x

8x-8+8=6x+8

5x+80=95

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

5x+80-80=95-80

2x=8

5x=15

2x+2=8+2

X=3

X=4

(93)1.8+6x=54

(103)

4

-x=20

6x=54-1.8

5

6x=52.2

444

—x+—=20+

6x北=52.2-h6

555

X=8.7

X=25

(94)6.7x-60.3=6.7

(104)

2x-6=12

6.7x=60.3+6.7

2x-6+6=12+6

6.7x=67

2x=18

6.7x-h6.7=67北.7

2x+2=18+2

X=10

X=9

(95)9+4x=53

(105)

7x+7=14

4x=53-9

7x+7-7=14-7

4x=44

7x=7

4x+4=44+4

7x+7=7+7

X=11

X=1

(96)2x+8=16

(106)

6x-6=0

2x=16-8

6x-6+6=0+6

2x=8

6x=6

2x+2=8+2

X=1

X=4

(107)

5x+6=11

(97)20x-14x=24

5x+6-6=11-6

5x=5

X=1

6x=6

(108)

2x-8=10

X=1

2x-8+8=10+8

(118)3x-3=3

2x=18

3x-3+3=3+3

X=9

3x=6

(109)

2.5x-8=4

3x-3=6-3

2.5x-8+8=4+8

X=2

2.5x=12

(119)5x-3x=4

2.5x-2.5=12-2.5

2x=4

X=4.8

2x+2=4+2

(110)

3

X=2

x-—=7

4

(120)2x+16=19

333

X-—+—=7+—

2x+16-16=19-16

444

2x=3

X=7.75

2x+2=3+2

(111)

3x+7=28

X=1.5

3x+7-7=28-7

(121)5x+8=19

3x=21

5x+8-8=19-8

3x-3=21-3

5x=11

X=7

5x-5=11-5

(112)

3x-7=26

X=2.2

3x-7+7=26+7

(122)14-6x=8

3x=33

14-6x+6x=8+6x

3x-3=33-3

6x+8-8=14-8

X=11

6x=6

(113)9x-x=16

X=1

8x=16

(123)15+6x=27

8x+8=16T

6x+15-15=27-15

X=2

6x=12

(114)24x+x=50

6x北=12北

25x=50

X=2

25x-25=50-25

(124)5-8x=4

X=2

5-8x+8x=4+8x

(115)1.2x-8=4

8x+4-4=5-4

1.2x-8+8=4+8

8x=1

1.2x=12

8x+8=1-8

1.2x-1.2=12-1.2

X=0.125

X=10

(125)7x+8=15

(116)3x-8=31

7x+8-8=15-8

3x-8+8=31+8

7x=7

3x=39

X=1

3x-3=39-3

(126)9-2x=1

X=13

9-2x+2x=1+2x

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