1. b, F = 27 + 58.26
<=> F = 27 + 58.(25 + 1)
<=> F = 27 + 58.25 + 58
<=> F = 58.25 + 85 > E
@Lien Anh Le

2. a, 18.39 + 36.81
= 18.39 + 18.2.81
= 18.(39 + 162)
= 18.201
= 3618
b, 23.82 + 109.77 - 18.77
= 23.82 + 77(109 - 18)
= 23.82 + 77.91
= 1886 + 7007
= 8893
@Lien Anh Le

1. a, A = 45.47
<=> A = (44 + 1).47
<=> A = 44.47 + 47
B = 44.73
<=> B = 44.(47 + 26)
<=> B = 44.47 + 44.26
Do 47 < 44.26
=> A < B
@Lien Anh Le

300

300

= 300 

. là dấu nhân
\(58.75+58.50.25\)
\(=58.75+58.1250\)
\(=58.\left(75+1250\right)\)
\(=58.1325=76850\)

162, bạn ko tick cho ai thì ko sao cũng được, nhưng bạn kết bạn với mình nha

162 
   Tick dùm đi  

23+36+45+58

=59+103

=162

25 + 36 + 98 + 58 + 26 + 35

= 61 + 98 + 58 + 26 + 35

= 159 + 58 + 26 + 35

= 217 + 26 + 35

= 243 + 35

= 278

k mk nha

1) $(-35)\cdot18+28\cdot35$

$=35\cdot(-18)+28\cdot35$

$=35\cdot(-18+28)$

$=35\cdot10$

$=350$

2) $53\cdot29-47\cdot(-29)$

$=53\cdot29-47\cdot(-1)\cdot29$

$=53\cdot29+47\cdot29$

$=29\cdot(53+47)$

$=29\cdot100$

$=2900$

3) $125\cdot(-24)+24\cdot225$

$=(-125)\cdot24+24\cdot225$

$=24\cdot(-125+225)$

$=24\cdot100$

$=2400$

4) $26\cdot(-121)-121\cdot(-36)$

$=-121\cdot[26+(-36)]$

$=-121\cdot(26-36)$

$=-121\cdot(-10)$

$=121\cdot10$

$=1210$

5) $65\cdot(-25)+25\cdot(-23)$

$=-65\cdot25+25\cdot(-23)$

$=25\cdot(-65-23)$

$=25\cdot(-88)$

$=-2200$

6) $237\cdot(-26)+26\cdot137$

$=-237\cdot26+26\cdot137$

$=26\cdot(-237+137)$

$=26\cdot(-100)$

$=-2600$

7) $30\cdot(-125)+25\cdot30$

$=30\cdot(-125+25)$

$=30\cdot(-100)$

$=-3000$

8) $(-37)\cdot69+(-31)\cdot37$

$=37\cdot(-69)+37\cdot(-31)$

$=37\cdot(-69-31)$

$=37\cdot(-100)$

$=-3700$

9) $31\cdot72-31\cdot70-31\cdot2$

$=31\cdot(72-70-2)$

$=31\cdot(2-2)$

$=31\cdot0$

$=0$

10) $(-12)\cdot47+(-12)\cdot52+(-12)$

$=-12\cdot(47+52+1)$

$=-12\cdot100$

$=-1200$

$\text{#}Toru$