a) (26-6)*(-4)+31*(-7-13)

=-80+-620

=-700

hacker 2k6

Lạy má cả 4 chân tay bài dài thì ai làm nổi

Mong bạn thông cảm

~~~ Chúc bạn học giỏi ~~~

20+36+42+52+56+64+67

=( 36+64)+(52 + 42 + 56 ) + 20+67

=100 + 150 + 20 + 67

= 250 + 20 + 67

= 270 + 67

= 337

=(36+64)+(42+67)+(52+56)+20

=100 + 109 + 108 + 20

= 337

A,153.177-153.77+100.(-77)

    =153.(177-77)+100.(-77)                

    =153.100+100.(-77)

    =100.(153+(-77))

    =100.76

    =7600

a)153.177-153.77+100+100.(-77)

=153.(177-77)+100.[1+(-77)]

=153.100+100.(-76)

=100.[153+(-76)]

=100.77=7700

b)(-29).(85-47)-85.(47-29)

=(-29).85+29.47-85.47+85.29

=85.[(-29)+29]+47.(29-85)

=85.0+47.(-56)

=0+(-2632)

c)(-167) . (67-34) - 67 . ( 34- 167)

=-167.67+167.34 - 67.34+67.167

=167.34-67.34

=34.(167-67)

=34.100=3400

\(E=1.2+2.3+3.4+..+199.200\)

\(3E=1.2.3+2.3.3+3.4.3+...+199.200.3\)

\(3E=1.2.3+2.3.\left(4-1\right)+3.4.\left(5-2\right)+...+199.200.\left(201-198\right)\)

\(3E=1.2.3+2.3.4+3.4.5+...+199.200.201\)

\(3E=\frac{199.200.201}{3}\)

\(E=2666600\)

a ) 5 x 216 x 25 x 4 = 1080 x 100 = 108000

b ) 37 x 16 x 25 x 4 = 592 x 100 = 59200

c ) 36 x ( 28 + 82 ) + 64 x ( 69 + 41 ) = 36 x 110 + 64 x 110 = ( 36 + 64 ) x 110 = 100 x 110 = 11000

d ) 42 x ( 53 + 36 + 11 ) = 42 x 100 = 4200

e) 37 x 45 + 56 x 37 - 37 x 1 = 37 x ( 45 + 56 - 1 ) = 37 x 100 = 3700

h) 17 x 1 + 17 x 81 + 18 x 17 = 17 x ( 1 + 81 + 18 ) = 17 x 100 = 1700

Mik nhanh nhất đấy , nhớ click cho mik nha !!!!!!!!!!!!!!!!!!!

a) 5 x 25 x 216 x 4

= ( 5 x 216 ) x ( 25 x 4 )

= 1080 x 100

= 108000

b) 4 x 37 x 25 x 16 

= ( 4 x 25 ) x ( 37 x 16 )

= 100 x 592 

= 59200

a)=(25x4)x5x216=100x5x216=500x216=108000

b)=(4x25)x37x16=100x37x16=3700x16=59200

c)=[36x(28+82)]+[64x(69+41)]=[36x110]+[64x110]=110x(36+64)=110x100=11000

d)=42x(53+36+11)=42x100=4200

e)=37x(45+56-1)=37x100=3700

h)=17x(1+81+18)=17x100=1700

k mk nhá

a) 491 x (267+53) - 491 x ( 153 + 67 )

=491x<(267+53) - (153+67)>

=491x<300-200>

=491x100

=49100

b) 53 x 39 + 47 x 39 - 53 x 21 - 47 x 21 

=53x(39-21) - 47x(39-21)

=53x18-47x18

=18x(53-47)

=18x6

=108

bạn ơi cho mình sửa phần b) nha

b) 53 x 39 + 47 x 39 - 53 x 21 - 47 x 21 

=53x(39-21) + 47x(39-21)

=53x18+47x18

=18x(53+47)

=18x100

=1800

a) 491×(267+53)-491×(153+67)=491×320-490×220=491×(320-220)=491×100=49100.

b) 53×39+47×39-53×21-47×21=(53×39-53×21)+(47×39-47×21)=[53×(39-21)]+[47×(39-21)]=53×18+47×18=(53+47)×18=100×18=1800.

\(a.97+214=311\\ b.65+129=194\\ c.431-199=232\\ d.8250:250=33\\ e.42\cdot167-42\cdot67\\ =42\cdot\left(167-67\right)\\ =42\cdot100\\ =4200\\ f.273:13=21\)