小数方程计算专项练习题文档格式.docx
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小数方程计算专项练习题文档格式.docx
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(27)﹣X=,
(28)(+X)×
2=13,
(29)7x﹣2×
9=80,
(30)13x﹣=,
(31)(x+12)×
6=108,
(32)4x+3×
(33)2×
(x﹣)=
(34)3x×
(35)÷
(36)2x+6=
(37)﹣x=
(38)(+x)×
(39)2x﹣×
10=15
(40)+=
(41)13(x+)=169
(42)2x﹣2+=
(43)7(x﹣)=
(44)2+﹣2x=
(45)7x÷
(46)6x+4x﹣11=
(47)7(x﹣)=
(48)+=
(49)5(x﹣)=35
(50)+51=17×
8
(51)+=
(52)8(x﹣)=
(53)(x﹣)=
(54)(9x++7x)÷
5=
(55)3x+7=
(56)5x﹣×
(57)4x+6x=
(58)+=
(59)2(x﹣3)=
(60)13x﹣x=
(61)68﹣=24
(62)3(x+)=
(63)3x﹣54=
(64)x﹣=
(65)4x+×
(66)4x﹣=
(67)+=
(68)3x+×
2=
(69)﹣=+,
(70)8﹣5(6x+)=10x+,
(71)7÷
x﹣=,
(72)(+x)÷
3+16=30,
(73)×
5﹣4x=,
(74)4(x﹣)=,
(75)2×
(x+)=
(76)8x﹣4x=
(77)2x﹣=
(78)(﹣2)x=
(79)64﹣16X=
(80)﹣=
(82)6×
4﹣=
(83)×
150﹣5x=
(84)﹣4X=,
(85)3(+X)÷
6=,
(86)+7=,
(87)3+=
(88)(y﹣)=6,
小数方程88题参考答案:
(1)(x+)×
(x+)×
4÷
4=÷
4
x+=
x+﹣=﹣
x=
2x÷
8×
4=×
3+2x=5
3+2x﹣3=5﹣3
2x÷
2=2÷
x=1
﹣=﹣+7
=7
÷
=7÷
×
(x+)=63
(x+)÷
=63÷
x+=10
x+﹣=10﹣
x=;
+4x﹣=﹣
4x÷
5x÷
5=20÷
5
x=4
6x﹣34=20
6x﹣34+34=20+34
6x÷
6=54÷
6
x=9
36÷
x×
x=×
x
36=×
x÷
x=90;
(﹣1)x=43
=43÷
x=5;
3x﹣=
3x﹣+=+
3x÷
3=÷
3
x=
﹣28=42
﹣28+28=42+28
=70
=70÷
x=20;
=
=÷
x=819;
+5x﹣=﹣
5x=
5=÷
4(+x)÷
+x=
+x﹣=﹣
=,
,
x=3;
×
45+5x﹣45=135﹣45,
5=90÷
5,
x=18.
+﹣=﹣,
x=9;
2x﹣6=,
2x﹣6+6=+6,
2x=,
2x÷
2=÷
2,
68﹣+=24+,
24+=68,
24+﹣24=68﹣24,
=44,
=44÷
x=10
﹣5x+5x=+5x
5x÷
20×
20=16×
20
=320÷
x=128;
x=8;
x÷
x÷
x=
5x﹣+=+,
5=28÷
(+x)×
2÷
2=13÷
+x﹣=﹣,
x=2.
7x﹣18=80,
7x﹣18+18=80+18,
7x=98,
7x÷
7=98÷
7,
x=14;
(13﹣)x=,
(x+12)×
6÷
6=108÷
6,
x+12=18,
x+12﹣12=18﹣12,
x=6.
4x+=
4x+﹣=﹣
4x=
2x﹣1=
2x﹣1+1=+1
2x=
2x+6﹣6=﹣6
2=63÷
x=27;
2x﹣25+25=15+25
2=40÷
x=20.
+=
﹣+=﹣
13(x+)÷
13=169÷
13
x+=13
x+﹣=13﹣
x=
2x﹣=
2x+﹣=+
7(x﹣)÷
7=÷
7
x﹣=
x+﹣=+
﹣2x+2x=+2x
﹣=+2x﹣
2=2x÷
7x÷
10x﹣11+11=+11
10x÷
10=÷
10
7(x﹣)÷
x﹣+=+
+﹣=﹣
x=1;
5(x﹣)÷
5=35÷
x﹣=7
x﹣+=7+
+51=136
+51﹣51=136﹣51
=85
=85÷
x=34.
8(x﹣)÷
8=÷
x=.
(x﹣)÷
x﹣=15
x﹣+=15+
(16x+)÷
5×
5=×
16x+=
16x+﹣=﹣
16x=24
16x÷
16=24÷
16
(55)3x+7=
3x+7﹣7=﹣7
3x=
5x﹣=
5x﹣+=+
10x=
x=10
2(x﹣3)÷
x﹣3+3=+3
12x=
12x÷
12=÷
12
68﹣+=24+
68﹣24=24+﹣24
44÷
x=40.
3(x+)÷
3x﹣54+54=+54
x=.
4x﹣+=+
3x+=
3x+﹣=﹣
﹣+=++,
﹣=+﹣,
8﹣30x﹣=10x+,
﹣30x+30x=10x++30x,
﹣=40x﹣,
4÷
40=40x÷
40,
7÷
x﹣+=+,
x=2×
x,
(+x)÷
3+16﹣16=30﹣16,
3×
3=14×
3,
+x﹣=42﹣,
﹣4x=,
﹣4x+4x=+4x,
+4x=,
+4x﹣=﹣,
4x=,
4,
4x﹣2=,
4x﹣2+2=+2,
2×
2x﹣+=+
x=8.
64﹣16X+16X=+16X
16X+=64
16X+﹣=64﹣
16X=
16X÷
16=÷
X=;
6X=
6X÷
6=÷
(81)(X+8)=22
(X+8)÷
=22÷
X+8=10
X+8﹣8=10﹣8
X=2;
24﹣=
24﹣+=+
+=24
+﹣=24﹣
X=
﹣5x=,
﹣5x+5x=+5x,
﹣=+5x﹣,
5=5x÷
﹣4X+4X=+4X,
+4X=,
+4X﹣=﹣,
4X=,
4X÷
(3×
+3X)÷
6×
6=×
+3X=,
+3X﹣=﹣,
3X=27,
3X÷
3=27÷
X=9;
+7﹣7=﹣7,
=﹣7,
﹣=﹣7﹣,
﹣7=0,
﹣7+7=0+7,
=7,
÷
X=.
3+﹣3=﹣3,
(y﹣)÷
=6÷
y﹣+=10+,
y=
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