发布时间：2019-08-27 09:56:37
25x8
=25x4x2
=100x2
=200
102x99
=102x(100-1)
=102x100-102x1
=10200-102
=10098
382x101-382
=382x101-382x1
=382x(101-1)
=382x100
=38200
35x8-4x35
=35x(8-4)
=35x4
=140
136x101-136
=136x101-136x1
=136x(101-1)
=136x100
=13600
4600/25/4
=4600/(25x4)
=4600/100
=46
25x15x4
=25x4x15
=100x15
=1500
99x126
=126x(100-1)
=126x100-126x1
=12600-126
=12474
120÷(3分之1-4分之1)
=120÷(12分之4-12分之3)
=120÷12分之1
=120×12
=1440
10.1×89-8.9
=101x8.9-8.9x1
=8.9x(101-1)
=8.9x100
=890
9.07-22.78÷3.4
=9.07-6.7
=9.07-（7-0.3）
=9.07-7+0.3
=2.07+0.3
=2.37
5+7×(8+12)÷(4-2)
=5+7×20÷2
=5+70
=75
16x4+16x6x16
=16x4+96x16
=16x(4+96)
=16x100
=1600
7/25×4/9+7/25×5/9
=7/25×(4/9+5/9)
=7/25×1
=7/25
60×(1/12+1/15+1/4)
=60×1/12+60×1/15+60×1/4
=5+4+15
=24
(5/12-3/8)×72
=5/12×72-3/8×72
=30-27
=3
6/7-5/24÷7/12
=6/7-5/24×12/7
=12/14-5/14
=7/14
=1/2
[3/4×(7/16-1/4)]÷9/13
=3/4×（7/16-4/16）×13/9
=1/4×3/16×13/3
=13/64
2/3-7/8+1/3
=(2/3+1/3)-7/8
=1-7/8
=1/8
5/6-(3/7-1/6)
=(5/6+1/6)-3/7
=1-3/7
=4/7
1-1/3-2/3
=1-(1/3+2/3)
=1-1
=0
1+3/5-1/10
=1+6/10-1/10
=1+1/2
=1又1/2
3/8-12/13+5/8
=3/8+5/8-12/13
=1-12/13
=1/13
1-(1/2-3/4)
=1+3/4-2/4
=1+1/4
=5/4
1-1/2-1/4
=1/2-1/4
=2/4-1/4
=1/4
2/7-8/9+5/7
=(2/7+5/7)-8/9
=1-8/9
=1/9
2-1/4-3/4
=2-(1/4+3/4)
=2-1
=1
1/2-(3/8-1/2)
=1/2+1/2-3/4
=1-3/8
=5/8
2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.125×8)
=0.5×8÷1
=4
18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×（14-4）
=200.3×10
=2003
300÷125÷8
=300÷(125×8)
=300÷1000
=0.3
396-96-172-28
=(396-96)-(172+28)
=300-200
=100
125x24
=125x8x3
=1000x3
=3000
26x15
=(20+6)x15
=20x15+6x15
=300+90
=390
25x99x4
=25x4x99
=100x99
=9900
250x32
=250x4x8
=1000x8
=8000
(98+98+98+98)x25
=4x98x25
=4x25x98
=100x98
=9800
3/4÷5/8×3/10
=3/4×8/5×3/10
=9/5×1/5
=9/25
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
1/2-(4/5-1/2)
=1/2+1/2-4/5
=1-4/5
=1/5
4800÷25÷4
=4800÷(25x4)
=4800÷100
=4800÷100
=48
2/5-(3/8-3/5)
=2/5+3/5-3/8
=1-3/8
=5/8
3/4-(3/7-1/4)
=3/4+1/4-3/7
=1-3/7
=4/7
3.2x0.125x2.5
=0.125x8x(0.4x2.5)
=1x1
=1
0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100
=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3
=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
=8.3×(6.3+3.7)
=8.3×10
=83
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=4821-1000+2
=3823
32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
1.8+18÷1.5-0.5×0.3
=1.8+12-0.15
=13.8-0.15
=13.65
6.5×8+3.5×8-47
=52+28-47
=80-47
=33
3.7x2.56-2.3
=9.472-2.3
=7.172
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
1/2-(4/5-1/2)
=1/2+1/2-4/5
=1-4/5
=1/5
4800÷25÷4
=4800÷(25x4)
=4800÷100
=4800÷100
=48
2/5-(3/8-3/5)
=2/5+3/5-3/8
=1-3/8
=5/8
3/4-(3/7-1/4)
=3/4+1/4-3/7
=1-3/7
=4/7
3.2x0.125x2.5
=0.125x8x(0.4x2.5)
=1x1
=1
0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100
=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3
=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
=8.3×(6.3+3.7)
=8.3×10
=83
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=4821-1000+2
=3823
32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
9/17x8/13+8/13/(17/8)
=9/17x8/13+8/13x8/17
=8/13x(9/17+8/17)
=8/13x1
=8/13
10.1×89-8.9
=10.1x89-89x0.1
=89x(10.1-0.1)
=89x10
=890
方程：
4x+8=4
解：4x=4-8
4x=-4
x=-4÷4
x=-1
12x+8x-12=28
解：20x=28+12
20x=40
x=40÷20
x=2
4x+2.1=8.5
解：4x=8.5-2.1
4x=6.4
x=6.4÷4
x=1.6
65y-30=100
解：65y=100+30
65y=130
y=130÷65
y=2
15x-7.5x=15
解：7.5x=15
x=15÷7.5
x=2
25%x=5
解：1/4x=5
x=5*4
x=20
20-15%x=17
解：0.15x=20-17
0.15x=3
x=3÷0.15
x=20
25%x=5
解：0.25x=5
x=5÷0.25
x=20
80%X=6/15X+96
解：4/5X=2/5X+96
4/5X-2/5X=96
2/5X=96
X=96*5/2
X=48*5
X=240
15%X+10-X=10*32%
解：0.15X-X=3.2-10
-0.85X=-6.8
X=-6.8÷(-0.85)
X=8
15%X+10-X=10*32%
解：0.15X+10-X=3.2
X-0.15X=10-3.2
0.85X=6.8
X=6.8÷0.85
X=8
8÷x=0.4
解：8÷x*x=0.4*x
0.4x=8
0.4x÷0.4=8÷0.4
x=20
5x+8x=4.7
解：13x=4.7
x=4.7/13
x=47/130
2*20x=10(60-x)
解：40x=600-10x
40x+10x=600
50x=600
x=600÷50
x=12
x÷75+x÷60=36
解：1/75x+1/60x=36
4/300x+5/300x=36
9/300x=36
x=36*300/9
x=12*100
x=1200
x-0.7x=16
解：(1-0.7)x=16
0.3x=16
x=16÷0.3
x=16/0.3
x=160/3
8(x-4)+5=45
解：8(x-4)=45-5
8(x-4)=40
x-4=40÷8
x-4=5
x=5+4
x=9
(x+10)*2.4+4=x+25+10
解：2.4x+24+4=x+35
2.4x+28=x+35
2.4x-x=35-28
1.4x=7
x=7÷1.4
x=5
4x+8=4
解：4x+8-8=4-8——等式性质
4x=-4
4x÷4=-4÷4
x=-1
7.8x-14=40
解：7.8x=40+14
7.8x=54
x=54/7.8
x=540/78
x=90/13
5x+30=6x-10
解：6x-5x=30+10
x=40
4x+8=4——方程两边除以4
解：x+2=1
x=1-2
x=-1
x：6.5=6：4
解：4x=6.5*6
4x=39
x=39/4
x=9.75
8.6x+3*6=52.4
解：8.6x+18=52.4
8.6x=52.4-18
8.6x=34.4
x=34.4÷8.6
x=4
x/5.2-1.6=1.8
解：x/5.2=1.8+1.6
x/5.2=3.4
x=3.4*5.2
x=17.68
225x=239.2x
解：239.2x-225x=0
14.2x=0
x=0÷14.2
x=0
80x+(80-20)(x+10)=4800
解：80x+60(x+10)=4800
80x+60x+600=4800
140x=4800-600
140x=4200
x=4200÷140
x=30
1.5x-0.6*15=18
解：1.5x-9=18
1.5x=18+9
1.5x=27
x=27÷1.5
x=18
6x+4(2x-1)+3(45-3x)=171
解：6x+8x-4+135-9x=171
6x+8x-9x+131=171
5x=171-131
5x=40
x=40÷5
x=8
9x*2+18*6x+17*2x=12.8
解：(18+108+34)x=12.8
160x=12.8
x=12.8÷160
x=0.08
2x*(x-1)-x*(2x+3)=15
解：2x²-2x-2x²-3x=15
-5x=15
x=15÷（-5）
x=-3
2分之1x+5分之1=3分之1x
解：2分之1x-3分之1x=-5分之1
6分之3x-6分之2x=-5分之1
6分之1x=-5分之1
x=-5分之1*6
x=-5分之6
x=-1又5分之1
8(3x+3)=72
解：3x+3=72÷8
3x+3=9
3x=9-3
3x=6
x=6÷3
x=2
8(3x+3)=72
解：24*(x+1)=72
x+1=72÷24
x+1=3
x=3-1
x=2
4(y+2)=24
解：y+2=24÷4
y+2=6
y=6-2
y=4
3x+12.4=5x-3.6
解：5x-3x=12.4+3.6
2x=16
x=16÷2
x=8
x-80%x-6=16
解：x-0.8x=16+6
0.2x=22
x=22÷0.2
x=110
x-0.1x=55.404
解：(1-0.1)x=55.404
0.9x=55.404
x=55.404÷0.9
x=61.56
x+12−1/4x=1
解：x-1/4x=1-12
3/4x=-11
x=-11*4/3
x=-44/3
9分之8÷(2x)=8分之5
解：8分之5*2x=9分之8
4分之5x=9分之8
x=9分之8*5分之4
x=45分之32
5x+30=6x-10
解：6x-5x=30+10
x=40
22%x=34
解：11/50x=34
x=34*50/11
x=1700/11
7分之2x：3分之2=6
解：7分之2x=6*3分之2
7分之2x=4
x=4*2分之7
x=14
0.5x+3分之1x=9分之5
解：2分之1x+3分之1x=9分之5
6分之3x+6分之2x=9分之5
6分之5x=9分之5
x=9分之5*5分之6
x=3分之2
2x-20%×10=4.22
解：2x-2=4.22
2x=4.22+2
2x=6.22
x=6.22÷2
x=3.11
(1-65%)*X=8
解：(1-0.65)X=8
0.35X=8
X=8÷0.35
X=800/35
X=160/7
3分之2X=9分之4
解：X=9分之4*2分之3
X=3分之2
3分之2X+4分之1=12
解：3分之2X=4分之48-4分之1
3分之2X=4分之47
X=4分之47*2分之3
X=8分之141
3X-7分之5X=7分之2
解：7分之21X-7分之5X=7分之2
7分之16X=7分之2
X=7分之2*16分之7
X=8分之1
3X+5=5X-1
解：5X-3X=5+1
2X=6
X=6÷2
X=3
4x-1.5x=5
解：2.5x=5
x=5÷2.5
x=2
X+3.6＝2.5X-3.6
解：2.5X-X=3.6+3.6
1.5X=7.2
X=7.2÷1.5
X=4.8
x+3.6=2.5x-3.6
解：2.5x-x=3.6+3.6
1.5x=7.2
x=7.2÷1.5
x=4.8
x÷4=6.34
解：x=6.34*4
x=25.36
8（x+2.4）=83.2
解：x+2.4=83.2÷8
x+2.4=10.4
x=10.4-2.4
x=8
7分之2x=21分之8
解：x=21分之8*2分之7
x=3分之4
x=1又3分之1
9分之8÷2x=8分之5
解：9分之8*2分之1x=8分之5
9分之4x=8分之5
x=8分之5*4分之9
x=32分之45
3.2+2x=9.8
解：1.6+x=4.9
x=4.9-1.6
x=3.3
1/3x-1/4x=12
解：4/12x-3/12x=12
1/12x=12
x=12*12
x=144
1/6x+2/3x=20
解：1/6x4/6x=20
5/6x=20
x=20*6/5
x=4*6
x=24
1/2x+1/3x=5/6
解：(1/2x+1/3x)×6=5/6×6
3x+2x=5
5x=5
x=5÷5
x=1
2x/3+5x/7=23/42
解：(2x/3+5x/7)×42=23/42×42
28x+30x=23
58x=23
x=23/58
5/6-x=1/4
解：x=5/6-1/4
x=10/12-3/12
x=7/12
x÷4/5=2/7
解：x=2/7×4/5
x=8/35
19/8-1/7x=1/8
解：1/7x=9/4
x=63/4
x=15又3/4
14+5x=42
解：5x=42-14
5x=28
x=28/5
x=5.6
7×5+65x=100
解：35+65x=100
65x=100-35
x=65/65
x=1
4x-8*7=28
解：4x=28+56
x=84/4
x=21
8x-x+18=67
解：7x+18=67
7x=67-18
7x=49
x=49÷7
x=7
x+15=200
解：x=200-15
x=185
x/2+x/3=5/6
解：(x/2+x/3)×6=5/6×6
3x+2x=5
5x=5
x=5÷5
x=1
5*8+2X=60
解：40+2X=60
2X=60-40
X=20÷2
X=10
5（8+2X）=60
解：8+2X=60÷5
8+2X=12
2X=12-8
X=4÷2
X=2
5(8+2X)=60
解：8+2X=60÷5
8/2+2X/2=12/2
4+X=6
X=6-4
X=2
X-5%X=12.6
解：0.95X=12.6
X=12.6/0.95
X=1260/95
X=252/19
5分之3÷5分之6-3X=5分之1
解：3X=5分之3*6分之5-5分之1
3X=2分之1-5分之1
3X=10分之5-10分之2
3X=10分之3
X=10分之3*3分之1
X=10分之1
(X+5分之3)*50%=4
解：X+5分之3=4÷0.5
X=8-5分之3
X=7又5分之2
5分之4X-4=60
解：5分之4X=60+4
X=64*4分之5
X=16*5
X=80
1÷(X-3分之2X)=5分之4
解：5分之4*3分之1X=1
15分之4X=1
X=1*4分之15
X=4分之15
3.2+2x=9.8
解：2x=9.8-3.2
2x=6.6
x=6.6÷2
x=3.3
(8+x)*3=60
解：8+x=60÷3
8+x=20
x=20-8
x=12
(8+x)*3=60
解：24+3x=60
3x=60-24
3x=36
x=36÷3
x=12
口算（竖式）：
8.8x5=44
9.9x24=237.6
12.5x8=100
2.5x4=10
7.7x10=77
2.2x5=11
101x9=909
10.1x9=90.9
88x5=440
99x24=2376
125x8=1000
25x4=100
12.5÷5=2.5
1.5÷3=0.5
2.2÷1.1=2
1.5÷5=0.3
1.5÷0.3=5
1.5÷0.5=3
2.4÷6=0.4
2.4÷4=0.6
3.6÷0.6=6
2.4÷0.6=4
5.1÷0.3=17
2.4÷0.4=6
2.4÷0.8=3
6.8÷0.4=17
2.4÷0.3=8
2.8÷0.4=7
2.4÷8=0.3
8.8÷0.8=11
2.4÷3=0.8
18.5÷0.5=37
3.64÷52=0.07
0.85x0.4=0.34
0.32x2.5=0.8
0.75x2.5=1.875
1.25x0.8=1
2.5x0.4=1
1.25x4.4=0.5
2.5x8.8=22
19.2÷0.6=32
59.8÷0.23=260
19.76÷5.2=3.8
10.8÷45=0.24
21÷1.4=15
8.84÷1.7=5.2
62.1÷0.03=2070
1.89÷54=0.035
0.51÷0.3=1.7
7.1÷2.5=2.84
1.998÷0.54=3.7
1.28÷16=0.08
2.1÷0.4=5.25
2.56÷32=0.08
50.18÷38.6=1.3
4.68÷75=0.0624
14.7÷0.07=210
5.4÷15=0.36
124.8÷0.24=520
23.4÷585=0.04
0.544÷0.025=21.76
203.5÷11=18.5
24÷15=1.6
3.64÷52=0.07
0.85x0.42=0.357
0.32x25=8
0.75x15=11.25
1.25x1.8=2.25
2.5x0.48=1.2
1.25x4.8=6
2.5x3.8=9.5
1.25x2.8=3.5
2.5x0.46=1.15
5.5x0.2=1.1
35×5=175
15×5=75
23×3=69
12×2.5=30
480÷80=6
16×5=80
27×3=81
90÷15=6
48÷4=12
39÷3=13
32×3=96
48÷16=3
12×8=96
27×0.3=8.1
56÷14=4
14×2=28
560÷80=7
96÷24=4
18.5÷0.5=37
598÷0.23=2600
19.76÷0.52=38
10.8÷45=0.24
21÷14=1.5
8.84÷1.7=5.2
62.1÷0.3=207
5.4÷15=0.36
37+26=63
76-39=37
605+59=664
27+32=59
48+27=75
73+15 =88
280+270=550
310-70=240
930-660=270
530+28=558
840÷21=40
750-290=460
4500÷50=90
120×2=240
7000÷70=100
200÷40=5
180÷30=6
240÷40=6
35×2=70
140×7=980
13×6=78
280×3=840
350×2=700
50×11=550
250×6=1500
7200+900=8100
410-201=209
125×8=1000
48×20=960
6600÷600=11
390+140=530
11×80=880
24×50=1200
3600÷400=9
4000÷50=80
530-70=460
420-90=330
18.5÷0.5=37
2769÷390=7.1
1568÷980=1.6
4576÷520=8.8
1440÷240=6
3072÷960=3.2
272÷680=0.4
3040÷400=7.6
576÷120=4.8
1577÷830=1.9
5005÷550=9.1
1701÷270=6.3
6633÷990=6.7
117÷30=3.9
825÷750=1.1
3901÷470=8.3
1045÷190=5.5
2457÷910=2.7
6237÷630=9.9
2485÷350=7.1
2832÷590=4.8
2904÷880=3.3
4437÷510=8.7
1357÷230=5.9
2945÷950=3.1
201÷670=0.3
2925÷390=7.5
517÷110=4.7
1577÷830=1.9
5005÷550=9.1
1701÷270=6.3
3465÷990=3.5
117÷30=3.9
825 ÷750=1.1
3901÷470=8.3
1045÷190=5.5
2457÷910=2.7
6237÷630=9.9
2485÷350=7.1
301÷70=4.3
1185÷790=1.5
4437÷510=8.7
1357÷230=5.9
2945÷950=3.1
201÷670=0.3
2925÷390=7.5
517÷110=4.7
1577÷830=1.9
5005÷550=9.1
1701÷270=6.3
3465÷990=3.5
2698÷710=3.8
740÷74=10
3772÷460=8.2
972÷180=5.4
2340÷900=2.6
6076÷620=9.8
2380÷340=7
252÷60=4.2
1092÷780=1.4
4300÷500=8.6
1276 ÷220=5.8
2820÷940=3
132 ÷660=0.2
2812÷380=7.4
460÷100=4.6