For decimal complex mixed operation and fractional complex mixed operation each 100 Don't go too far

For decimal complex mixed operation and fractional complex mixed operation each 100 Don't go too far

2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
11/14-3/14+1/8
=4.05-(2.8+0.7)
=0.55
4.05-2.8-0.7
=4.05-(2.8+0.7)
=0.55
212+198
=(200+12)+(100+98)
=200+12+100+98
=12+98+100+200
=110+100+200
=410
13.75-(3.75+6.48)
=13.75-3.75-6.48
=10-6.48
=3.52
（0.75*42.7+57.3-0.573*25）/3*7972
=(0.75*42.7+57.3*1-57.3*0.25)/3*7972
=[0.75*42.7+57.3(1-0.25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
=75/3*7972
=25*7972
=199300
3.45*0.6*2.8=3.45×2.8×0.6=5.796
4.02＋5.4＋0.98
=4.02+0.98+5.4
=5+5.4
=10.4
5.17－1.8－3.2
=5.17-（1.8+3.2）
=5.17-5
=0.17
13.75－(3.75＋6.48)
=13.75-3.75-6.48
=3.52
33*145+33*55
=(145+55)*33
=200*33
=6600
369*136-36*369
=100*369
=36900
193*51+193*49
=100*193
=19300
25*32
=25*4*8
=800
79*16+79*78+79*6
=(16+78+6)*79
=100*79
=7900
25*32
=25*4*8
=800
193*51+193*49
=100*193
=19300
369*136-36*369
=100*369
=36900
33*145+33*55
=(145+55)*33
=200*33
=6600
/= division sign * = multiplication sign
1.(1+1/2)(1+1/3)(1+1/4).(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4).(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2×3/5
14.3.375+5.75+2.25+6.625
15.1001－9036÷18
16.3.8×5.25+14.5
17.2.1*4.3+5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1+17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97+0.97*6.625
30.25×4/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2×1/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403÷13×27
46.1.5×4.2－0.75÷0.25
47.3.27×4 +3.27×5.7
48.（1.2+ 1.8）×4.51025－768÷32
49.0.25×80－0.45÷0.9
50.1025－768÷32
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8+2.2*16+16
64.401*19+284
65.58.7-16.65/3.7
66.0.4*4.7*2.5+(2.3+5.3)
67.9.31-1.125-7.875
68.640+128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62+0.08)
1/2+1/3
2/1-5/4
9\3*3\9
3/4+5/4=? 4/5+6/5=? 5/6+6/7=?

30 mixed decimal operations
Don't exceed 30! Do something like this: 1 △ 2 + 9-1 or 1x9-6,

In the mixed operation, how to deal with the decimal?

It depends on the situation
If all are decimals, and only add and subtract, then the direct operation is good
If there is multiplication and division, or if there are not all decimals and fractions, then we need to convert the decimals into fractions

Light can travel 300000 kilometers per second, which is about 20000 kilometers more than seven times the length of the earth's equator? (solved by equation)

Suppose the length of the earth's equator is x 10000 km, 7x + 2 = 30, 7x = 28 and x = 4. A: the length of the earth's equator is about 40000 km

People's education press fifth grade volume I mathematics book 121 page 5

Suppose the earth's equator is about X ten thousand meters long
7x+2=30
7x+2-2=30-2
7x=28
7 x/7=28/7
x=4
A: the earth's equator is about 40000 kilometers long

Seven questions on page 121 of mathematics book Volume 1 of grade 5

Eggplant field: 15 * 32 / 2 = 240
Cucumber field: 25 * 32 = 800
Tomato field: (15 + 23) * 32 / 2 = 608

How to use equation in mathematics book No.72

13.2x+9x=33.3
Solution; (13.2 + 9) x = 33.3
22.2x=33.3
x=33.3/22.2
x=1.5

Fifth grade volume 2 decimal addition, subtraction, multiplication and division mixed 10

1 3.2＋1.68＝2 2.8×0.4＝3 14－7.4＝4 1.92÷0.04＝5 0.32×500＝6 0.65＋4.35= 7 10－5.4＝8 4÷20＝9 3.5×200＝10 1.5－0.06＝11 0.75÷15＝12 0.4×0.8＝13 4×0.25＝14 0.36＋1.54＝15 1.01×99＝16 420÷35...

One decimal point addition, subtraction, multiplication and division

2.5＋0.5＝ 1.5×6＝8.4÷0.7＝ 2.83－0.9＝0.3×24＝ 2.8＋3.4＝2.64＋0.6＝ 5.4÷27＝2.5×20＝ 3.2÷4＝1.25×8＝ 3.7×2＝10－0.34＝ ...

Mixed decimal operation of addition, subtraction, multiplication and division,
RT
The best is simple operation, 20, not fractions

0.78*5+19.22*5
(1.8+2.4)*5
5*9*4+0.96
9.25*5-5*7.25
0.25*40+10.75*40
Just like these, the general distribution law can be simple, but it depends on whether the decimals you list can form integers. Note that there is no distribution law in division, and the combination law is OK