整数小数简易方程计算专项练习120题有答案.docx

上传人:b****6 文档编号:7576636 上传时间:2023-01-25 格式:DOCX 页数:23 大小:20.93KB
下载 相关 举报
整数小数简易方程计算专项练习120题有答案.docx_第1页
第1页 / 共23页
整数小数简易方程计算专项练习120题有答案.docx_第2页
第2页 / 共23页
整数小数简易方程计算专项练习120题有答案.docx_第3页
第3页 / 共23页
整数小数简易方程计算专项练习120题有答案.docx_第4页
第4页 / 共23页
整数小数简易方程计算专项练习120题有答案.docx_第5页
第5页 / 共23页
点击查看更多>>
下载资源
资源描述

整数小数简易方程计算专项练习120题有答案.docx

《整数小数简易方程计算专项练习120题有答案.docx》由会员分享,可在线阅读,更多相关《整数小数简易方程计算专项练习120题有答案.docx(23页珍藏版)》请在冰豆网上搜索。

整数小数简易方程计算专项练习120题有答案.docx

整数小数简易方程计算专项练习120题有答案

整数小数简易方程专项练习120题(有答案)

 

 

 

(1)ⅹ+3.4=11.2

(2)2(ⅹ﹣1.5)=9

(3)11ⅹ+21=28.7

(4)1.4x+9.8=22.4

(5)2(x﹣3)=11.6

(6)13x﹣x=144

(7)1.2÷x=0.5

(8)x﹣3.5+4.5=12

(9)1.3x﹣0.4=0.9

(10)x﹣0.1x=1.08

 

(11)5x+7=42

(12)4.36x﹣0.36x=16

(13)x÷0.3=9

(14)x﹣6=33

(15)12x﹣9x=8.7

(16)6x+18=483

(17)x+2.1=1

(18)0.5x+4.8=7.2

(19)42+4x=54

(20)6x﹣28.5=7.5

(21)6y+3y=13.5

 

(22)8.5x﹣2.8x=18.24

(23)x÷1.2=0.4

(24)9x+8=71

(25)x÷3=4

(26)740﹣x=410

(27)0.8X=0.56

(28)8÷x=9

(29)x﹣7.25=0.54

(30)3.7+x=10.5

(31)x+8.9=37.5

(32)x÷6=7.05

(33)12x=14.4

(34)4x+6.7=8.7

(35)5.5x﹣1.3x=12.6

(36)x÷10=25

(37)4x﹣1.2=74

(38)x+3.2=7.4

(39)x÷3=1.4

(40)0.15x﹣3.8=8.5

(41)2(x﹣0.5)=1.6

(42)7x﹣2x=14.6

(43)10n+5n=0.6

(44)7y+6=41

(45)x﹣7.8=10.2

(46)1.8x=2.16

(47)2(x+1.7)=9.2

(48)8x﹣4x=0.64

(49)2x﹣0.24=0.12

(50)7x+2.5x=3.8

(51)20x=70

(52)0.55x﹣0.3x=15

(53)135﹣x+20=120

(54)x﹣0.036=1.28

(55)10x+25=100

(56)32x+18x=120

(57)x﹣0.6x=18

(58)0.4x+30=80

 

(59)6x+18=48

(60)x+2.6x=7.2

(61)12x﹣9x=8.7

(62)3(x+2.1)=10.5

(63)x+523=523

(64)x×201=201

(65)x÷22=484

(66)x﹣125=315

(67)8x﹣2x=42

(68)5x﹣7×12=41

(69)x÷6=1.5

(70)2x+5=40

(71)2.2x+7.8x=15.36

(72)9x﹣5x=36

 

(73)75x+25x=315

(74)x+2.1x=930

(75)0.6x+x=240

(76)x﹣0.65x=14

(77)x﹣0.4x=240

(78)9x+0.3x=18.6

(79)16x﹣40=440

(80)5x+45=300

(81)8x﹣13.6=0

(82)0.9x+4=22

(83)6ⅹ+4ⅹ﹣11=2.9

(84)5x﹣4.2=6.3

(85)x÷1.2=4.8

(86)x﹣0.6x=0.24

(88)6x﹣35=13

(89)12x﹣9x=8.7

(90)9×(x﹣2)=36

(91)5.6x﹣8.6=19.4

(92)3.2x﹣1.5x=0.51

(93)2x+1.2×5=7

(94)5.6x=11.2

(95)2x+1.6=3.4

(96)12.5x+x=108

(97)3x﹣4×6.5=7.6

(98)x÷1.44=2

(99)5x+1.5=4.5

(100)5x﹣3.5x=6

(101)6.8+2x=24.3

(102)7x÷0.7=8.8

(103)3x﹣213=45

(104)2.8x+3.4x=9.92

(105)23x﹣3×23=138

(106)4.2x﹣2.4x=12.6

(107)7x﹣3.8×2=8.5

(108)9x﹣1.8×0.4=9

(109)3x﹣2.4=3.6

(110)2x+9=33

(111)x﹣0.85x=3

(112)40+2x=220

(113)4x﹣6=28

(114)4x﹣2x=48

(115)2x÷9=25

(116)2y+3y+6=14.2

 

(117)5.34+X=26.7

(118)X﹣24.5=6.48

(119)X+2X=45

(120)X÷0.6=4.5

 

整数小数简易方程120题参考答案:

(1)ⅹ+3.4=11.2

x+3.4﹣3.4=11.2﹣3.4

x=7.8

(2)2(ⅹ﹣1.5)=9

2(ⅹ﹣1.5)÷2=9÷2

x﹣1.5+1.5=4.5+1.5

x=6

(3)11ⅹ+21=28.7

11x+21﹣21=28.7﹣21

11x=7.7

11x+11=7.7÷11

x=0.7

(4)1.4x+9.8=22.4

1.4x+9.8﹣9.8=22.4﹣9.8

1.4x÷1.4=12.6÷1.4

x=9

(5)2(x﹣3)=11.6

2(x﹣3)÷2=11.6÷2

x﹣3+3=5.8+3

x=8.8

(6)13x﹣x=144

12x÷12=144÷12

x=12

(7)1.2÷x=0.5

1.2÷x×x=0.5x

1.2=0.5x

1.2÷0.5=0.5x÷0.5

x=2.4;

(8)x﹣3.5+4.5=12

x+1=12

x+1﹣1=12﹣1

x=11;

(9)1.3x﹣0.4=0.9

1.3x﹣0.4+0.4=0.9+0.4

1.3x=1.3

1.3x÷1.3=1.3÷1.3

x=1;

(10)x﹣0.1x=1.08

0.9x=1.08

0.9x÷0.9=1.08÷0.9

x=1.2. 

 (11)5x+7=42

5x+7﹣7=42﹣7

5x=35

5x÷5=35÷5

x=7

(12)4.36x﹣0.36x=16

4x=16

4x÷4=16÷4

x=4

(13)x÷0.3=9

x×0.3÷0.3=9×0.3

x=2.7

(14)x﹣6=33

x+6﹣6=33+6

x=39

(15)12x﹣9x=8.7

3x=8.7

3x÷3=8.7÷3

x=2.9;

(16)6x+18=483

6x+18﹣18=483﹣18

6x=465

6x÷6=465÷6

x=77.5;

(17)x+2.1=1

x+2.1﹣2.1=1﹣2.1

x=﹣1.1;

(18)0.5x+4.8=7.2

0.5x+4.8﹣4.8=7.2﹣4.8

0.5x=2.4

0.5x÷0.5=2.4÷0.5

x=4.8.

(19)42+4x=54

42+4x﹣42=54﹣42

4x=12

4x÷4=12÷4

x=3;

(20)6x﹣28.5=7.5

6x﹣28.5+28.5=7.5+28.5

6x=36

6x÷6=36÷6

x=6;

(21)6y+3y=13.5

9y=13.5

9y÷9=13.5÷9

y=1.5. 

(22)8.5x﹣2.8x=18.24

5.7x=18.24

5.7x÷5.7=18.24÷5.7

x=3.2

(23)x÷1.2=0.4

x÷1.2×1.2=0.4×1.2

x=0.48

(24)9x+8=71

9x+8﹣8=71﹣8

9x=63

9x÷9=63÷9

x=7

(25)x÷3=4

x÷3×3=4×3

x=12;

(26)740﹣x=410

740﹣x+x=410+x

x+410﹣410=740﹣410

x=330;

(27)0.8X=0.56

0.8X÷0.8=0.56÷0.8

x=0.7;

(28)8÷x=9

8÷x×x=9x

9x÷9=8÷9

x=

(29)x﹣7.25=0.54

x﹣7.25+7.25=0.54+7.25

x=7.79;

(30)3.7+x=10.5

3.7+x﹣3.7=10.5﹣3.7

x=6.8

(31)x+8.9=37.5

x+8.9﹣8.9=37.5﹣8.9

x=28.6;

(32)x÷6=7.05

x÷6×6=7.05×6

x=42.3;

(33)12x=14.4

12x÷12=14.4÷12

x=1.2

(34)4x+6.7=8.7

4x+6.7﹣6.7=8.7﹣6.7

4x=2

x=0.5

(35)5.5x﹣1.3x=12.6

(5.5﹣1.3)x=12.6

4.2x=12.6

x=3

(36)x÷10=25

x÷10×10=25×10

x=250

(37)4x﹣1.2=74

4x﹣1.2+1.2=74+1.2

4x=75.2

4x÷4=75.2÷4

x=18.8

(38)x+3.2=7.4

x+3.2﹣3.2=7.4﹣3.2

x=4.2

(39)x÷3=1.4

x÷3×3=1.4×3

x=4.2

(40)0.15x﹣3.8=8.5

0.15x﹣3.8+3.8=8.5+3.8

0.15x=12.3

0.15x÷0.15=12.3÷0.15

x=82

(41)2(x﹣0.5)=1.6

2(x﹣0.5)÷2=1.6÷2

x﹣0.5+0.5=0.8+0.5

x=1.3

(42)7x﹣2x=14.6

5x=14.6

5x÷5=14.6÷5

x=2.92

(43)10n+5n=0.6

15n=0.6

15n÷15=0.6÷15

n=0.04

(44)7y+6=41

7y+6﹣6=41﹣6

7y=35

7y÷7=35÷7

y=5

(45)x﹣7.8=10.2

x﹣7.8+7.8=10.2+7.8

x=18;

(46)1.8x=2.16

1.8x÷1.8=2.16÷1.8

x=1.2

(47)2(x+1.7)=9.2

2(x+1.7)÷2=9.2÷2

x+1.7﹣1.7=4.6﹣1.7

x=2.9

(48)8x﹣4x=0.64

4x=0.64

4x÷4=0.64÷4

x=0.16

(49)2x﹣0.24=0.12

2x﹣0.24+0.24=0.12+0.24

2x=0.36

2x÷2=0.36÷2

x=0.18

(50)7x+2.5x=3.8

9.5x=3.8

9.5x÷9.5=3.8÷9.5

x=0.4 

(51)20x=70

20x÷20=70÷20

x=3.5;

(52)0.55x﹣0.3x=15

0.25x=15

0.25x÷0.25=15.25÷0.25

x=61;

(53)135﹣x+20=120

155﹣x=120

155+x﹣x=120+x

120+x=155

120﹣120+x=155﹣120

x=35;

(54)x﹣0.036=1.28

x+0.036﹣0.036=1.28+0.036

x=1.316;

(55)10x+25=100

10x+25﹣25=100﹣25

10x=75

10x÷10=75÷10

x=7.5;

(56)32x+18x=120

50x=120

50x÷50=120÷50

x=2.4;

(57)x﹣0.6x=18

0.4x=18

0.4x÷0.4=18÷0.4

x=45;

(58)0.4x+30=80

0.4x+30﹣30=80﹣30

0.4x=50

0.4x÷0.4=50÷0.4

x=125. 

(59)6x+18=48

6x+18﹣18=48﹣18

6x=30

6x÷6=30÷6

x=5;

(60)x+2.6x=7.2

3.6x=7.2

3.6x÷3.6=7.2÷3.6

x=2;

(61)12x﹣9x=8.7

3x=8.7

3x÷3=8.7÷3

x=2.9;

(62)3(x+2.1)=10.5

3(x+2.1)÷3=10.5÷3

x+2.1=3.5

x+2.1﹣2.1=3.5﹣2.1

x=1.4.

(63)x+523=523

x+523﹣523=523﹣523

x=0;

(64)x×201=201

x×201÷201=201÷201

x=1;

(65)x÷22=484

x÷22×22=484×22

x=10648;

(66)x﹣125=315

x﹣125+125=315+125

x=440.

(67)8x﹣2x=42

6x=42

6x÷6=42÷6

x=7

(68)5x﹣7×12=41

5x﹣84=41

5x﹣84+84=41+84

5x÷5=125÷5

x=25

(69)x÷6=1.5

x÷6×6=1.5×6

x=9

(70)2x+5=40

2x+5﹣5=40﹣5

2x÷2=35÷2

x=17.5

(71)2.2x+7.8x=15.36

10x=15.36

10x÷10=15.36÷10

x=1.536

(72)9x﹣5x=36

4x=36

4x÷4=36÷4

x=9

 

(73)75x+25x=315

100x=315

100x÷100=315÷100

x=3.15;

(74)x+2.1x=930

3.1x=930

3.1x÷3.1=930÷3.1

x=300;

(75)0.6x+x=240

1.6x=240

1.6x÷1.6=240÷1.6

x=150;

(76)x﹣0.65x=14

0.35x=14

0.35x÷0.35=14÷0.35

x=40;

(77)x﹣0.4x=240

0.6x=240

0.6x÷0.6=240÷0.6

x=400;

(78)9x+0.3x=18.6

9.3x=18.6

9.3x÷9.3=18.6÷9.3

x=2;

(79)16x﹣40=440

16x﹣40+40=440+40

16x=480

16x÷16=480÷16

x=30. 

(80)5x+45=300

5x+45﹣45=300﹣45

5x÷5=255÷5

x=51

(81)8x﹣13.6=0

8x﹣13.6+13.6=0+13.6

8x÷8=13.6÷8

x=1.7

(82)0.9x+4=22

0.9x+4﹣4=20﹣4

0.9x÷0.9=18÷0.9

x=20

(83)6ⅹ+4ⅹ﹣11=2.9

10ⅹ﹣11+11=2.9+11

10ⅹ÷10=13.9÷10

x=1.39.

 (84)5x﹣4.2=6.3

5x﹣4.2+4.2=6.3+4.2

5x=10.5

5x÷5=10.5÷5

x=2.1;

(85)x÷1.2=4.8

x÷1.2×1.2=4.8×1.2

x=5.76;

(86)x﹣0.6x=0.24

0.4x=0.24

0.4x÷0.4=0.24÷0.4

x=0.6

 (87)6+x=78

6+x﹣6=78﹣6

x=72;

(88)6x﹣35=13

6x﹣35+35=13+35

6x=48

6x÷6=48÷6

x=8;

(89)12x﹣9x=8.7

3x=8.7

3x÷3=8.7÷3

x=2.9;

(90)9×(x﹣2)=36

9×(x﹣2)÷9=36÷9

x﹣2=4

x﹣2+2=4+2

x=6.

(91)5.6x﹣8.6=19.4

5.6x﹣8.6+8.6=19.4+8.6

5.6x=28

5.6x÷5.6=28÷5.6

x=5;

(92)3.2x﹣1.5x=0.51

1.7x=0.51

1.7x÷1.7=0.51÷1.7

x=0.3;

(93)2x+1.2×5=7

2x+6=7

2x+6﹣6=7﹣6

2x=1

2x÷2=1÷2

x=0.5;

(94)5.6x=11.2

5.6x÷5.6=11.2÷5.6

x=2

(95)2x+1.6=3.4

2x+1.6﹣1.6=3.4﹣1.6

2x=1.8

2x÷2=1.8÷2

x=0.9

(96)12.5x+x=108

13.5x=108

13.5x÷13.5=108÷13.5

x=8

(97)3x﹣4×6.5=7.6

3x﹣26=7.6

3x﹣26+26=7.6+26

3x=33.6

3x÷3=33.6÷3

x=11.2

(98)x÷1.44=2

x÷1.44×1.44=2×1.44

x=2.88

(99)5x+1.5=4.5

5x+1.5﹣1.5=4.5﹣1.5

5x=3

5x÷5=3÷5

x=0.6;

(100)5x﹣3.5x=6

1.5x=6

1.5x÷1.5=6÷1.5

x=4.

 (101)6.8+2x=24.3

6.8+2x﹣6.8=24.3﹣6.8

2x÷2=17.5÷2

x=8.75;

(102)7x÷0.7=8.8

10x=8.8

10x÷10=8.8÷10

x=0.88;

(103)3x﹣213=45

3x﹣213+213=45+213

3x÷3=258÷3

x=86;

(104)2.8x+3.4x=9.92

6.2x=9.92

6.2x÷6.2=9.92÷6.2

x=1.6;

(105)23x﹣3×23=138

23x﹣69+69=138+69

23x÷23=207÷23

x=9;

(106)4.2x﹣2.4x=12.6

1.8x=12.6

1.8x÷1.8=12.6÷1.8

x=7;

(107)7x﹣3.8×2=8.5

7x﹣7.6+7.6=8.5+7.6

7x÷7=16.1÷7

x=2.3;

(108)9x﹣1.8×0.4=9

9x﹣0.72+0.72=9+0.72

9x÷9=9.72÷9

x=1.08.

(109)3x﹣2.4=3.6

3x﹣2.4+2.4=3.6+2.4

3x=6

3x÷3=6÷3

x=2;

(110)2x+9=33

2x+9﹣9=33﹣9

2x=24

2x÷2=24÷2

x=12;

(111)x﹣0.85x=3

0.15x=3

0.15x÷0.15=3÷0.15

x=20.

(112)40+2x=220

40+2x﹣40=220﹣40

2x=180

2x÷2=180÷2

x=90;

(113)4x﹣6=28

4x﹣6+6=28+6

4x÷4=34÷4

x=8.5;

(114)4x﹣2x=48

2x=48

2x÷2=48÷2

x=24;

(115)2x÷9=25

2x÷9×9=25×9

2x=225

2x÷2=225÷2

x=112.5;

(116)2y+3y+6=14.2

5y+6=14.2

5y+6﹣6=14.2﹣6

5y=8.2

5y÷5=8.2÷5

y=1.64. 

(117)5.34+X=26.7

5.34+X﹣5.34=26.7﹣5.34

X=21.36;

(118)X﹣24.5=6.48

X﹣24.5+24.5=6.48+24.5

X=30.98;

(119)X+2X=45

3X=45

3X÷3=45÷3

X=15;

(120)X÷0.6=4.5

X÷0.6×0.6=4.5×0.6

X=2.7.

展开阅读全文
相关资源
猜你喜欢
相关搜索

当前位置:首页 > 医药卫生 > 预防医学

copyright@ 2008-2022 冰豆网网站版权所有

经营许可证编号:鄂ICP备2022015515号-1