(127-375)-(127-75) 

= (127-127) - (375-75)

= 0 - 300

= -300

a) \(\left(127-375\right)-\left(127-75\right)\)

\(=127-375-127+75\)

\(=\left(127-127\right)-\left(375-75\right)\)

\(=0-300\)

\(=-300.\)
 

\(\left(127-375\right)-\left(127-75\right)\)

\(=127-375-127+75\)

\(=\left(127-127\right)-\left(375-75\right)\)

\(=0-300\)

\(=-300\)

(2032+73.254):127-61

=(16+73.2)-60

=162-60

=102

chúc bạn học tốt nha

còn cách nào khác không bạn Lim Nayeon

(8.254+73.254):127-61

=254.(8+73):127-61

=254.81:127-61=162-61=101

mik đang cần lắm 

B . M = -12700

cảm ơn cậu nhiều nè     

( 1 + 3 + 5 + 7 +... + 2003 + 2005 ) x ( 125125 x 127 - 127127 x 125 )

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x ( 125 x 1001 x 127 - 127 x 1001 x 125 )

= ( 1 + 3 + 5 + 7 + ... + 2003 + 2005 ) x 0

= 0

~ Thiên Mã ~

lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooolllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

a)

`127+246+273+354`

`=(127+273)+(246+354)`

`=400+600`

`=1000`

b)

`1,58+3,04+6,96+3,42`

`=(1,58+3,42)+(3,04+6,96)`

`=5+10`

`=15`

c)

`1/2+1/3+1/5+1/6`

`=(1/2+1/3+1/6)+1/5`

`=(3/6+2/6+1/6)+1/5`

`=6/6+1/5`

`=1+1/5`

`=5/5+1/5`

`=6/5`

a, 127 + 246 + 273 + 354

= ( 127 + 273) + ( 246 + 354)

= 400 + 600

= 1000

b, 1,58 + 3,04 + 6,96 + 3,42

= ( 1,58 + 3,42) + ( 3,04 + 6,96)

= 5 + 10

= 15

c, \(\dfrac{1}{2}\) + \(\dfrac{1}{3}\) + \(\dfrac{1}{5}\) + \(\dfrac{1}{6}\)

=  ( \(\dfrac{1}{2}\) + \(\dfrac{1}{3}\) + \(\dfrac{1}{6}\)) + 0,2

= 1 + 0,2

= 1,2 

a)

$127+246+273+354$

$=(127+273)+(246+354)$

$=400+600$

$=1000$

b)

$1,58+3,04+6,96+3,42$

$=(1,58+3,42)+(3,04+6,96)$

$=5+10$

$=15$

c)

$1/2+1/3+1/5+1/6$

$=(1/2+1/3+1/6)+1/5$

$=(3/6+2/6+1/6)+1/5$

$=6/6+1/5$

$=1+1/5$

$=5/5+1/5$

$=6/5$

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Đề này là vây

hoặc bị lỗi nhỉ

dấu* là nhân hay là gì hả bn?

127 . 57 + 44 . 127 - 127

= 127 . ( 57 + 44 - 1 )

= 127 . 100

= 12 700

= 127* (57+44-1)

= 127*100

=12700

a.sự nóng chảy

b.sự ngưng tụ

c.sự bay hơi

d.sự đông đặc

Sự nóng chảy: que kem lạnh để ngoài trời một lúc sau tan chảy thành nước

Sự bay hơi: vào mùa hè, nước ở các ao, hồ cạn dần

Sự đông đặc: ly nước sau khi bỏ vào tủ lạnh một thời gian lấy ra nước trong ly trở thành đá

Sự ngưng tụ: hơi nước trong các đám mây được ngưng tụ và tạo thành mưa

( 1+3+5+7+…+2003+2005) x (125 125 x 127 – 127 127 x 125)

= ( 1+3+5+7+…+2003+2005) x (125 x 1001 x 127 – 127 x 1001x 125)

=  ( 1+3+5+7+…+2003+2005) x                   0  =    0