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小学六年级上册数学解方程训练
解方程的依据:加减乘除法的变形
(1) 加法:a + b = 和 则 a = 和-b b = 和-a
例:4+5=9 则有:4=9-5 5=9-4
(2) 减法:被减数a – 减数b = 差 则:
被减数a = 差+减数b 被减数a-差 = 减数b
例:12-4=8 则有:12=8+4 12-8=4
(3) 乘法:乘数a × 乘数b = 积 则:
乘数a = 积 ÷ 乘数b 乘数b= 积 ÷ 乘数a
例:3×7=21 则有:3=21÷7 7=21÷3
(4) 除法:被除数a ÷ 除数b = 商 则:
被除数a= 商 × 除数b 除数b=被除数a ÷ 商
例:63÷7=9 则有:63=9×7 7=63÷9
6×-χ= χ-χ= χ+=
X-2/7X=3/4 70%X + 20%X = 3.6 25% + 10X =4/5
χ-χ=12 χ= χ×(+)=
X - 15%X = 68 X+3/8 X=121 5X-3×5/21 =5/11
5X-3×= +X= 8x-×3=
(x-6)×=25 6X+5 =13.4 3X=
6X+5 =13.4 X÷(6/35) =(26/45) ×(13/25) 2(x-0.6)=4
(0.5+x)+x=9.8÷2 2(X+X+0.5)=9.8 25000+x=6x
X- X= 2X + = X×=20×
3200=450+5X+X X-0.8X=6 12x-8x=4.8
X+X=121 5X-3×= X÷=12
7.5*2X=15 1.2x=81.6 x+5.6=9.4
X÷= X+X= 4X-6×=2
52-x =15 91÷x =1.3 X+8.3=10.7
÷X= X = X = ×
15x =3 3x-8=16 7(x-2)=2x+3
X÷ =× 4x-3 ×9 = 29 x + x = 4
3x+9=2718(x-2)=270 12x=300-4x 7x+5.3=7.4
3x÷5=4.8 30÷x+25=85 1.4×8-2x=6
X-21×=4 X+X=18 X×( + )=
6x-12.8×3=0.06 410-3x=170 3(x+0.5)=21
0.5x+8=43 6x-3x=18 (200-x)÷5=30
(x-140)÷70=4 0.1(x+6)=3.3×0.4 4(x-5.6)=1.6
7(6.5+x)=87.5 (27.5-3.5)÷x=4 3X-(1/2+1/4)=7/12
6.6-5X=3/4-4X 1.1X+2.2=5.5-3.3X (0.5+x)+x=9.8÷2
2(X+X+0.5)=9.8 25000+x=6x 3200=450+5X+X
X-0.8X=6 12x-8x=4.8 7.5*2X=15
1.2x=81.6 x+5.6=9.4 52-x =15
91÷x =1.3 30x12x-14x=1 x-0.7x=3.6
6X+5 =13.4 X-X= 4χ-6=38
X-5.7=2.15 15 5X-2X=18 3X 0.7=5
3.5×2= 4.2 x 26×1.5= 2x 0.5×16―16×0.2=4x
9.25-X=0.403 16.9÷X=0.3 X÷0.5=2.6
3-5x=80 1.8-6x=54 6.7x-60.3=6.7
9 +4x=40 0.2x-0.4+0.5=3.7 9.4x-0.4x=16.2
12-4x=20 1/3x+5/6x=1.4 12x+34x=1
18x-14x=12 x+14x=65 23x=14x+14
5X= X= X÷=
X÷=12 X= X=×
X÷=÷ X-0.25= 4+0.7X=102
4.5x-x=28
X-5.7=2.15
15 5X-2X=18
3X+0.7=5
3.5×2= 4.2+x
26×1.5= 2x+10
0.5×16―16×0.2=4x
13 9.25-X=0.403
16.9÷X=0.3
X÷0.5=2.6
x+13=33
3 - 5x=80
1.8 +6x=54
6.7x -60.3=6.7
9 +4x =40
2x+8=16
x/5=10
x+7x=8
9x-3x=6
6x-8=4
5x+x=9
x-8=6x
4/5x=20
2x-6=12
7x+7=14
6x-6=0
5x+6=11
2x-8=10
1/2x-8=4
x-5/6=7
3x+7=28
3x-7=26
9x-x=16
24x+x=50
6/7x-8=4
3x-8=30
6x+6=12
3x-3=1
5x-3x=4
2x+16=19
5x+8=19
14-6x=8
15+6x=27
5-8x=4
7x+8=15
9-2x=1
4+5x=9
10-x=8
8x+9=17
9+6x=14
x+9x=4+7
2x+9=17
8-4x=6
6x-7=12
7x-9=8
x-56=1
8-7x=1
x-30=12
6x-21=21
6x-3=6
9x=18
4x-18=13
5x+9=11
6-2x=11
x+4+8=23
7x-12=8
23 x-5×14=14
12+34x=56
22-14x=12
23x-14x=14
X+8.3=10.7
15x =3
3x-8=16
7(x-2)=2x+3
3x+9=2718(x-2)=270
12x=300-4x
7x+5.3=7.4
3x÷5=4.8
30÷x+25=85
1.4×8-2x=6
6x-12.8×3=0.06
410-3x=170
3(x+0.5)=21
0.5x+8=43
6x-3x=18
1.5x+18=3x
5×3-x÷2=8
0.273÷x=0.35
1.8x=0.972
x÷0.756=90
9x-40=5
x÷5+9=21
48-27+5x=31
10.5+x+21=56
x+2x+18=78
(200-x)÷5=30
(x-140)÷70=4
0.1(x+6)=3.3×0.4
4(x-5.6)=1.6
7(6.5+x)=87.5
(27.5-3.5)÷x=4
x+19.8=25.8
5.6x=33.6
9.8-x=3.8
75.6÷x=12.6
5x+12.5=32.3
5(x+8)=102
x+3x+10=70
3(x+3)=50-x+3
5x+15=60
3.5-5x=2
0.3×7+4x=12.5
x÷1.5-1.25=0.75
4x-1.3×6=2.6
20-9x=1.2×6.25
6x+12.8=15.8
150×2+3x=690
2x-20=4
3x+6=18
2(2.8+x)=10.4
(x-3)÷2=7.5
13.2x+9x=33.3
3x=x+100
x+4.8=7.2
6x+18=48
3(x+2.1)=10.5
12x-9x=8.7
13(x+5)=169
2x-97=34.2
3.4x-48=26.8
42x+25x=134
1.5(x+1.6)=3.6
2(x-3)=5.8 65x+7=42 9x+4×2.5=91
4.2 x+2.5x=134 10.5x+6.5x=51 89x-43x=9.2
5x-45=100 1.2x-0.5x=6.3 23.4=2x=56
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