小学数学总复习:解方程专项练习200题及答案
-
.
解方程专项练习
200
题(有答案)
(
1
)
x
﹣
=
,
p>
(
6
)
1
﹣
20%x=0.4
,
(
8
)
p>
1
÷(
x
﹣
)
=6
,
(
2
)
p>
x
×
×
=
,
(
3
)
﹣
4x=
,
(
4
)
8
×
2.5
﹣
2x=13.6
(
5
)
0.78
:
x=3
:
5
,
.
9
)
2x
﹣
x=1.2
,
10
)
9<
/p>
×
3
﹣
1.7x
=13.4
,
p>
11
)
x
﹣
25%x=24
,
12
)<
/p>
x
﹣
+0.2=
,
(
(
(
(
(
13<
/p>
)
0.6x+90%x=78
,
(
14
)<
/p>
20%x
﹣
2.4
×
3=0.8
,
(
p>
15
)
x
﹣
x=42
,
(
16<
/p>
)
0.6x+3
×
2.5=67.5
,
(
17<
/p>
)
1
÷(
x
p>
﹣
0.45
)
=5
,
.
.
(
1
8
)
x
﹣
2.
25=8.25
,
(
19<
/p>
)
:
x=3
:<
/p>
12
,
(
20<
/p>
)
x+0.8=5.6
,
(
21)
1.4
:
x=1
:
0.75
,
(22)
x
×(
2
﹣
)
=24
,
(23)
4x
﹣
=3
,
(
24<
/p>
)
12x+7
×
0.3=20.1
,
(
25
)<
/p>
x+
x=
,
(
26<
/p>
)
x
:
42=<
/p>
,
p>
(
27
)
×
0.5+
x=
,
(
28<
/p>
)
0.8
:
=0
.48
:
x
,
(
29<
/p>
)
χ
﹣
χ
=
,
.
.
(
30
)
42
:
=
χ
:
(
p>
31
)
5x
﹣
p>
0.4=75%
,
( 32)
6x
﹣
0.9=4.5
,
(33
)
2
(
x
﹣
p>
3
)
=5.8
,<
/p>
(
34)
1.6x=6.4
,
(35)
4x
﹣
3
×
9=29
< br>,
p>
(36
)
16+8x=40
,
.
(
37
)
<
/p>
x
÷
1.1=3
,
(
42
)
3x
﹣
x=
(
43
)
=
,
,
p>
(
38
)
+2x=
,
(
39
)<
/p>
×
3
﹣
7x=1
.04
,
p>
(
40
)
x
﹣
1
﹣
x=2
,
(
41<
/p>
)
x
﹣
x=14
,
.
44
)
1.2
:
=
,
45
)
=<
/p>
:
,
46
p>
)
:
=x
:
0.8
,
47
p>
)
x
=
+1
,
48
)
1
﹣
25%X+25%x=
+25%x
,
(
(
(
(
(
.
(
49
)
=
,
(
56
)
150%x+66=99
(
p>
50
)
×
X=
p>
,
(
51
)
<
/p>
5
:
8=x
:<
/p>
32
,
p>
(
52
)
2x+3
×
0.9=24.9
,
(
p>
53
)
5.3x
﹣
2.9x=
,
(
54
)
×(
7
﹣
2.8x
)
=1.5
,
(
55
)<
/p>
x
:
0.3=
:
,
.
57
)
x
+6
﹣
0.8x=16
58
)
59
)
60
)
3<
/p>
÷(
X
﹣
)
p>
=1.3
(
(
(
(
.
(<
/p>
61
)
(
X+0
.5
)
:
2
=
(
X
﹣
4
p>
)
:
,
(
62
)
<
/p>
X
÷
0.05=3.528
,
(
68
)<
/p>
6X+5=17
,
(
p>
63
)
2X
﹣
p>
4
×
6=80
,<
/p>
(
p>
64
)
4
×
4.5
﹣
3X=6.38
,
p>
(
65
)
4X
p>
﹣
7.2=10
,
(
p>
66
)
11.5X+X=20
,
(
67<
/p>
)
3.8
×
12
+15X=87.6
,
.
69
)
0
.6
×(
2.5+X
)
=4.2
,
70
)
:
=X
:
,
71
)
,
72
)
(
(
(
(
.
(
73
)
p>
(
74
)
4
(
+x
)
=
,
(
80
)
:
18%=
,
,
(
p>
75
)
×
0.25
+
x=
,
(
p>
76
)
x
﹣
,
p>
(
77
)
200<
/p>
:
6=x
:
,<
/p>
(
78
)<
/p>
4
÷
X=
,
p>
(
79
)<
/p>
8
(
x
﹣
2
)
=2
(
x+7
)
,
.
81
)
﹣
2x=
,
82
)
x+
x=46
,
83
)
:
x=
:
,
84
)
=<
/p>
,
(
(
(
(
.
(<
/p>
85
)
5
(
p>
3x
﹣
4
)﹣
p>
2
(
x
﹣
1
)
=5
(
2x
﹣
1
)
(
86
)
=
,
(
p>
91
)
28.4
﹣
5x=5.8
,
(
92)x
:
=
(
p>
87
)
8
(
2X
﹣
7
)
=5
(
X+13
)
p>
,
p>
(
88
)
3
(
x+4.5
)
=6
0
,
(
89<
/p>
)
1.6x+2.4=7.52
,
(
90
)<
/p>
3
(
x
﹣
0.8
)
=6.3
,
.
93
)
+
2x=
,
94
)
x=15%
,
< br>95
)
x
﹣
x=
,
96
)
x+50%x=6
,
97
)<
/p>
:
x=0.3
:
12
,
(
(
(
(
(
.
p>
(
98
)
4x+2
(
8
﹣
x
p>
)
=26
,
p>
(
104
)
x
p>
﹣
,
(
p>
99
)
x
﹣
=0
,
(
100
)
+
x=1
,
p>
(
101
)
x
p>
×(
+
)
=
,
(
102
)
,
(
103
)
,
.
10
5
)
x
×
,<
/p>
106
)
5x
+35=650
,
p>
107
)
720
÷
3x=80
,
108
)
3.6x
﹣
0.9x=8.1
,
(
(
(
(
(
p>
109
)
4
×
p>
4.5
﹣
3x=6
,
(
110
)
=
,
(
111
)
6
×
3
﹣
p>
1.8X=7.2
,
p>
(
112
)
÷
p>
x=
,
(
p>
113
)
x
÷
p>
=42
,
(
p>
114
)
x+
=<
/p>
,
.
.
(
115
)
7x
÷
3=8.19
,
p>
(
116
)
12<
/p>
:
0.6=x
:
,
(
117
)
3
(
x+2
)
=4
(
x+
1
)
,
(118)3x
< br>﹣
70%x=9.2
,
(119)
6+
< br>x=240
,
(
120
)
22.5
﹣
0.4x=12.5
,
.
(
121
)
x
:
3.5=4
:
2
,
p>
(
122
)
x
p>
﹣
0.8x
﹣
6=
16
,
(
127
)
x
×
50%
﹣
x=5
,
(
128
)
1
﹣
x=<
/p>
,
(
123
)
:
=x
:
8
,
(
124
)
,
(
125
)
x
:
15=
:
,
(
126
)
x+
x=
,
.
129
)
2
.5+1
x=3
,
130
)
3
x
﹣
2
=4<
/p>
,
131
)<
/p>
8.5
﹣
3x=2
,
132
)
3
÷
x=4
,
1
33
)
x
﹣
5
%=17.54
,
(
(
(
(
(
p>
(
134
)
:
p>
=
:
(
4
﹣
x
)
,
(135)
6x+31=49
,
(136)
7x
÷
3=
8.19
,
(137)
32.8
﹣
9x=17.5
,
(138)
x
﹣
0.36x=16
,
(139)
6
×
7+3x=69
,
.
.
(140)
6x+2x
﹣
56=0
,
(141)
3x
﹣
0.45
×
4=2.7
,
(142)
5.8x
﹣
4.6x=0.96
,
(143)
8.4
÷(
9
﹣
x
< br>)
=3
,
(144)
3x
÷
1.
2=8
,
.
(<
/p>
145
)
5x+28=71
,
(
150
)
8x
﹣
2.
6=37.8
,
(
151
)
x
÷
=
p>
,
(
146
)
8.7
﹣
p>
1.2x=3.9
,
(
p>
147
)
8x
﹣<
/p>
2.6x=37.8
,
(
148
)
0.75x
﹣
0.95
×
4=8.5
,
(
149
)
54
÷
2+
3x=72
,
. <
/p>
152
)
x+30%x=26
,
153
)
7
.8
﹣
3x=3.6
,
154
)
6
×
3
p>
﹣
1.8x=7.2
,
p>
155
)
10
:<
/p>
x=4.5
:
0.8
,
(
(
(
(
(
156
)
:
=x
:
,<
/p>
(
p>
157
)
X
﹣
p>
7.65=4.64
,
(
p>
158
)
28.25
﹣
X=8.25
,
(
159
)
X
﹣(
3.6+2.97
)
=12.42
,
(
p>
160
)
÷
x=<
/p>
,
(
p>
161
)
14.5=5.5
,
(
162
)
x
﹣
80%x=48
,
.
.
(
163
)
7
5%x
﹣
5
×
=6
,
(
164
)
x
﹣
6.8
=15.4
,
(
165
)
1.9x=5.7
,
(
166
)
4.3y
﹣
y=4.6
,
(
167
)
5x+2.6=7.6
,
(168)
x
﹣
1.5=12.9
,
.
(169)
9x+5x=8.4
,
(170)
6.8+3.2x=14.8
,
p>
(
176
)
x
p>
×
20%=15.2
,
(
171
)
5
÷
x=
,
p>
(
172
)
﹣
p>
x=
,
(
173
)
4.5
×
﹣
3
x=1.5
,
p>
(
174
)
(
p>
1+25%
)
x=0.5
< br>,
(
175
)
x
﹣
40%x=9
,
. <
/p>
178
)
x
﹣<
/p>
x=
,
p>
179
)
x
÷
p>
75%=3
,
1
80
)
4x
﹣
,
181
)
:
x=
:
4.5
,
p>
182
)
(
x
p>
﹣
4.5
)×
6=
12.5
,
(
(
(
(
(
.
(<
/p>
183
)
27
﹣
17x=13.4
,
p>
(
189
)
4x<
/p>
﹣
5
×
6=12
,
(
184
)
9.6+3x=3.24
×
5
,
(
185
)
2x+5=5x
﹣
7
< br>,
(186)
3
(
x
﹣
2
)
=2
﹣
5
(
x
﹣
2
)
p>
,
(
187
)
4x
﹣
3
(<
/p>
20
﹣
x
)
p>
+4=0
,
(
p>
188
)
﹣
=1<
/p>
,
.
190
)
8x
﹣
3x
=15.6
,
191
)
30
×(
x
÷
4
)
=60
,
192
)
7.2
×
0.5
﹣
3x=1.2
,
193
)
5x
﹣
2.4
×
5=8
,
p>
194
)
+
x=<
/p>
×
2
,
(
(
(
(
(
.
(
195
)
5x+2.4
×
15=66
,
(
196
)
3.2x+2.8x-x=1
,
p>
(
197
)
2.5
×
16-8x=12
,
(
198
)
9.6-3x=6.3
,
(
199
)
5
(
x+6
)
=75
,
(
p>
200
)
x
÷
p>
0.7+0.9
×
3=4
< br>,
.
答案:
.
.
(
1
)
x
﹣
=
,
=
,
,
x=
;
(
2
)
p>
x
×
×
=
,
x=
,
x
×
p>
21=
×
21
,<
/p>
x=12
;
(
3
)
﹣
4x=
,
﹣
4x+4x=
+4x
,
=
+4x
,
÷
4=4x
÷
4
,
x=
.
(
4
)
8
×
2.5
﹣
2x=13.6
20
﹣
2x
=13.6
,
13.6+2X=20
,
2X=6.4
,
x=3.2
;
(
5
)
0.78
:
x=3
:
5
,
3x=0.78
×
< br>5
,
3x=3.9
,
x=1.3
(
p>
6
)
1
﹣
20%x=0.4
,
1
﹣
20%x+20%x=0.4+2
0%x
,
0.4+20%x=1
,
0.4+20%x
﹣
0.4=1
< br>﹣
0.4
,
20%x=0.6
,
20%x
×
=0.6
×
,
x=3
;
(
8
)
1
p>
÷(
x
﹣
)
=6
,
1
÷(
x
﹣
)×(
x
﹣
)
=6
×(
x
﹣
)
,
1=6
×(
x
﹣
)
,
6x
﹣
6<
/p>
×
=1
,
6x<
/p>
﹣
3=1
,
6x=4
,
6x<
/p>
÷
6=4
÷
6<
/p>
,
x=
<
/p>
(
9
)
2x
p>
﹣
x=1.2
,
x
(
p>
2
﹣
)
=1.2<
/p>
,
x=1.2
,
p>
x
÷
=1.2
÷<
/p>
,
x=1
;
(
10
)
9<
/p>
×
3
﹣
1.7x
=13.4
,
27
﹣<
/p>
1.7x=13.4
,
27
﹣<
/p>
1.7x+1.7x=13.4+1.7x
,
.
.
13.4+1.7x=27
,
13.4+1.7x
﹣
13.4=27
﹣
13.4
,
1.7x=13.6
,
1.7x
÷
1.7=13.6
÷
1.7
,
x=8
(
11
)
x<
/p>
﹣
25%x=24
,
75%x=24
,
75%x
÷
75%=24
÷
75%
,
x=32
;
(
12
)
x<
/p>
﹣
+0.2=
,
x
﹣
0.6=
,
x
﹣
0.
6+0.6=
+0.6
,
x=
,
x<
/p>
÷
=
÷
,
x=1
(
13
)<
/p>
0.6x+90%x=78
,
1.5x=78
,
1.5x
÷
1.5=78
÷
1.5
,
x=52
;
(
14
)<
/p>
20%x
﹣
2.4
×
3=0.8
,
20%
x
﹣
7.2=0.8
,
20%x
﹣
7.2+7.2=0.8+7.2
,
20%x
÷
20%=8
÷
20%
,
x=40
;
(
15
)<
/p>
x
﹣
x=42
,
x=42
,
p>
x
÷
=42
÷
p>
,
x=252
(
16
)
0.6x+3
×
2.5=67.5
,
0.6x+7.5=67.5
,
p>
0.6x+7.5
﹣
7.5=67.5
p>
﹣
7.5
,
0.6x=60
,
0.6x
÷
0.6=60
÷
0.6
,
x=100
;
p>
(
17
)
1
÷(
x
﹣
0.45<
/p>
)
=5
,
p>
÷(
x
﹣
0.45
)×(
x
﹣
0
.45
)
=
(
x
﹣
0.45
)
,
x
﹣
p>
2.4=1.6
,
x
﹣
2.4+2.4=1.6+2.4
,
x=4
,
x
÷
=4
÷<
/p>
,
.
.
x=
<
/p>
(
18
)
x
p>
﹣
2.25=8.25
,
< br>
x
﹣
2.2
5+2.25=8.25+2.25
,
x=10.5
;
(
19
)
:
x=3
:
12
,
p>
3x=
×
12
,<
/p>
3x
÷<
/p>
3=9
÷
3
,<
/p>
x=3
(
20
)
x+0.8=5.6
,
x+0.8
﹣
0.8=5.6
﹣
0.8
,
x=4.8
,
x
×
p>
=4.8
×
,
x=8
.
(
21)
1.4
:
x=1
:
0.75
,
x=1.4
×
0.75
,
x=1.05
(22)
x
×(
2
﹣
)
=24
,
x
×
p>
=24
,
x
p>
×
÷
=24
÷
p>
,
x=20
;
(23)
4x
﹣
=3
,
4x
﹣
+
=3
+
,
4x=4
,
4x
÷<
/p>
4=4
÷
4
,<
/p>