300 calculation of the fourth grade progressive equation It can be copied and pasted. It's mainly multiple. Don't use decimal point. Don't say I'm too backward,

518＋171＋482＋129
329＋78＋271
59×4×25
3×125×13×8
96×125
4×301×25×3
326＋326×99
104×73
23×（300＋2）
58＋19×58
32×62＋68×62
Recursive equation calculation:
16×21×250
103×15
125×39－25×39
25×204
50×16×125
44×250
125×25×50×64
（750+250）÷125×12
593+（356+207）
567÷63+15×23
199×99+99
Recursive equation calculation:
38×（209-87÷29）
53×28+71×53+53
864÷【（2193-1457）÷23】
86×103+359
201×93
69×59+42×69-69
101×38-25×38×4
2310÷【235-160÷（18+22）】
（125+9）×8
25+34+375+166
Recursive equation calculation:
328-（257-172）-143
356÷4×（470-362）
（25+125）×32
54+99×99+45
14+14×52+53×86
18×69-18+32×18
36×25-25×20+16×75
125×88
904×（386-264）
3150-9018÷18-107
204×35-846÷6
Recursive equation calculation:
1961+49×67-18
23×98+23
40×（72+28）
364-187+36-213
2048-567÷7×5
7×88×125
【2145-（517+388）】×24
25×125×48
27×24×25
77×56+1108
（132-56）÷38
Recursive equation calculation:
7200÷81×9
1001×999
【1128-（128+500）】÷25×2
101×49+250×8×4
78×32+67×32+78
【（576÷36）+14】×55
6480-259-141+320
4837-181+719
250×4+1050÷25
625÷25×4-25
Recursive equation calculation: (Yu)
（480+33×14）÷157
48×25÷48×25
（1408-45×24）÷41
804×25
621÷21+102×15
476+249+324-49
5974÷103+(221-163)×18
(25×125)×(27×32)
125×72+25
25×16×125
386+137+114-37
Recursive equation calculation:
56×125+8
(125+4)×72
32×(125+25)
105-5×(4992÷48-86)
374-186-114
125×4+25×8
637-(237-65)
79×79-79+22×79
199×199
125×801
Recursive equation calculation:
777×6+111×58
554×64+446×64
35×35+35×64+35
84×25
450÷【（393-388）×（6+4）】
15×27+73×16
73×165+73-73×66
4600÷25÷4
5327-4500-327
700-82+18
85×65-14×85-85
Recursive equation calculation:
125×25×38×4×8
99×99+99×3
15×19+15×18+21×45
1000÷125×8
4400÷25÷4
1360÷（136÷2）
98×21
9000÷8÷125
90-90÷9
540×31÷270
17×4×25 25×33×40 125×19×8 25×125×16
125×32 25×48 2008×25 125×792
125×（40+8）（100-4）×25 （80-4）×25
57×32+32×43 173×61-73×61 52×14-22×14
81+791×9 101×32-32 72+99×72
17×4×25 25×33×40 125×19×8 25×125×16
125×32 25×48 2008×25 125×792
125×（40+8）（100-4）×25 （80-4）×25
518＋171＋482＋129
329＋78＋271
59×4×25
3×125×13×8
96×125
4×301×25×3
326＋326×99
104×73
23×（300＋2）
58＋19×58
32×62＋68×62
Recursive equation calculation:
16×21×250
103×15
125×39－25×39
25×204
50×16×125
44×250
125×25×50×64
（750+250）÷125×12
593+（356+207）
567÷63+15×23
199×99+99
Recursive equation calculation:
38×（209-87÷29）
53×28+71×53+53
864÷【（2193-1457）÷23】
86×103+359
201×93
69×59+42×69-69
101×38-25×38×4
2310÷【235-160÷（18+22）】
（125+9）×8
25+34+375+166
Recursive equation calculation:
328-（257-172）-143
356÷4×（470-362）
（25+125）×32
54+99×99+45
14+14×52+53×86
18×69-18+32×18
36×25-25×20+16×75
125×88
904×（386-264）
3150-9018÷18-107
204×35-846÷6
Recursive equation calculation:
1961+49×67-18
23×98+23
40×（72+28）
364-187+36-213
2048-567÷7×5
7×88×125
【2145-（517+388）】×24
25×125×48
27×24×25
77×56+1108
（132-56）÷38
Recursive equation calculation:
7200÷81×9
1001×999
【1128-（128+500）】÷25×2
101×49+250×8×4
78×32+67×32+78
【（576÷36）+14】×55
6480-259-141+320
4837-181+719
250×4+1050÷25
625÷25×4-25
Recursive equation calculation: (Yu)
（480+33×14）÷157
48×25÷48×25
（1408-45×24）÷41
804×25
621÷21+102×15
476+249+324-49
5974÷103+(221-163)×18
(25×125)×(27×32)
125×72+25
25×16×125
386+137+114-37
Recursive equation calculation:
56×125+8
(125+4)×72
32×(125+25)
105-5×(4992÷48-86)
374-186-114
125×4+25×8
637-(237-65)
79×79-79+22×79
199×199
125×801
Recursive equation calculation:
777×6+111×58
554×64+446×64
35×35+35×64+35
84×25
450÷【（393-388）×（6+4）】
15×27+73×16
73×165+73-73×66
4600÷25÷4
5327-4500-327
700-82+18
85×65-14×85-85
Recursive equation calculation:
125×25×38×4×8
99×99+99×3
15×19+15×18+21×45
1000÷125×8
4400÷25÷4
1360÷（136÷2）
98×21
9000÷8÷125
90-90÷9
540×31÷270
17×4×25 25×33×40 125×19×8 25×125×16
125×32 25×48 2008×25 125×792
125×（40+8）（100-4）×25 （80-4）×25
57×32+32×43 173×61-73×61 52×14-22×14
81+791×9 101×32-32 72+99×72
17×4×25 25×33×40 125×19×8 25×125×16
125×32 25×48 2008×25 125×792
125×（40+8）（100-4）×25 （80-4）×25
57×32+32×43 173×61-73×61 52×14-22×14
81+791×9 101×32-32 72+99×72
I hope I can help you
57×32+32×43 173×61-73×61 52×14-22×14
81+791×9 101×32-32 72+99×72
I hope I can help you

100 problems of recursive equation calculation in Grade Four
To the fourth grade Oh, urgent! Urgent! Urgent!

Some do not meet the requirements, please choose for yourself
Out of formula calculation: 360 △ [(12 + 6) × 5]
288÷[（26－14）×8]
500×6-(50×2-80)
（105×12－635）÷25
864÷[（27－23）×12]
（45＋38－16）×24
500－（240＋38×6）
[64－（87－42）] ×15
（845－15×3）÷1612×[（49－28）÷7]
450÷[（84－48] ）÷12
（58+37）÷（64-9×5）
95÷（64-45）
178-145÷5×6+42
812-700÷（9+31×11）
85+14×（14+208÷26）
（284+16）×（512-8208÷18）
120-36×4÷18+35
（58+37）÷（64-9×5）
(6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8
（3.2×1.5+2.5）÷1.6
6-1.6÷4= 5.38+7.85-5.37=
7.2÷0.8-1.2×5= 6-1.19×3-0.43=
6.5×（4.8-1.2×4）=
5.8×（3.87-0.13）+4.2×3.74
32.52-（6+9.728÷3.2）×2.5
[（7.1-5.6）×0.9-1.15] ÷2.5
5.4÷[2.6×（3.7-2.9）+0.62]
12×6÷（12-7.2）-6
12×6÷7.2-6
0.68×1.9+0.32×1.9
（58+370）÷（64-45）
420+580-64×21÷28
（136+64）×（65-345÷23）
48.10.15-10.75×0.4-5.7
388+(5000-1000)
158+262+138
375+219+381+225
5001－247－1021－232
（181+2564）+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999
7755－(2187+755)
2214+638+286
3065－738－1065
899+344
2357－183－317－357
2365－1086－214
497-299
2370+1995
3999+498
1883-398
12×25
75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25 25×32×125
32×(25+125) 88×125
102×76 58×98
178×101－178
84×36+64×84
75×99+2×75
83×102－83×2
98×199
123×18－123×3+85×123
50×(34×4)×3
25×（24+16）
178×99+178
79×42+79+79×57
7300÷25÷4
8100÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700
1248÷24
3150÷15
4800÷25
2356－（1356－721）
1235－（1780－1665）
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)
（181+2564）+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99755－(2187+755)
2214+638+286 3065－738－1065
899+344
2357－183－317－357 2365－1086－214
497-299
2370+1995
3999+498
1883-398
12×25 75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25
25×32×125
32×(25+125)
88×125
102×76
58×98
178×101－178
84×36+64×84
75×99+2×75 83×102－83×2
98×199
123×18－123×3+85×123
50×(34×4)×3
25×（24+16）
178×99+178
79×42+79+79×57
7300÷25÷4
8100÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700
1248÷24
3150÷15
4800÷25
21500÷125
2356－（1356－721）
1235－（1780－1665）
75×27+19×25
31×870+13×310
4×(25×65+25×28)

Eight out of thirty-six, 27 out of six, five out of thirty, and sixty-three out of seven are reduced to the simplest fraction. What fraction of a five meter is a 24 meter?

Eight out of 36 equals two out of nine, twenty-seven out of six equals nine out of two, five out of thirty equals one out of six, sixty-three out of seven equals nine. 24 decimeters is 12 out of 25 of five meters

Xiaoli plans to finish reading a book in a certain time by solving the equations. On average, she reads 2 pages more than the original plan every day. As a result, she finished the book two days ahead of schedule
Using equations to solve the problem, Xiaoli plans to finish a book in a certain period of time. On average, she reads 2 pages more than the original plan every day. As a result, she finishes the book two days ahead of schedule. If she reads 2 pages less than the original plan every day, she will spend 4 days more than the original plan. How many pages are there in this book?

Setting: Xiao Li plans to read x pages and y days every day
（x+2）（y-2）=xy(1)
(x-2)(y+4)=xy(2)
From (1), y-x-2 = 0
From (2) - y + 2X-4 = 0
x-6=0
x=6
y-6-2=0
y=8
The book has 48 pages

X-15% = 1.7

15％=0.15
X=1.7+0.15
X=1.85

4 / 7 can be regarded as a fraction of four meters?

One in seven

Find the maximum value of function f (x) = 2x ^ 3 ~ 6x ^ 2 ~ 18 ^ X in [- 2,4]

f'(x)=6x-12x-18
Let f '(x) > 0
The solution is - 6x-18 > 0
X-3 is the minus interval
f(max)=f(-2)=16-24+36=28

Addition of rational numbers (28 20:53:15)
The daily closing price of a certain stock in a week is: Monday, + 5 yuan, Tuesday, - 2 yuan, Wednesday, + 3 yuan, Thursday, - 5 yuan, Friday, - 4 yuan. If it is 16 yuan per share, how much is the highest price per share this week? How much is the lowest price per share?

+5,-2,+3,-5,-4
be
Monday, 16 + 5 = 21
Tuesday, 21-2 = 19
Wednesday, 19 + 3 = 22
Thursday, 22-5 = 17
Friday, 17-4 = 13
So the highest is 22 yuan and the lowest is 13 yuan

First simplify and then evaluate, 3-m / 2m-4 △ (M + 2-5 / m-2) M = √ 2-3

The difference between acceleration and rate of change
Acceleration is a physical quantity reflecting the speed of change, and the rate of change represents the speed of change,
I think the two are similar,
Let's give some examples or explain them clearly. Let's distinguish these two physical quantities~
And there's the difference between the slope and the slope,

Acceleration is the rate of change of velocity and the tangent slope of V-T diagram
Velocity is the rate of change of displacement

300 calculation of the fourth grade progressive equation It can be copied and pasted. It's mainly multiple. Don't use decimal point. Don't say I'm too backward,