46.(54-15)-54.(46+15)

=46.54-46.15-54.46+54.15

bạn bấm máy tính ra kết quả nhé

Bài 4: 

a: =1267-196-267-304

=1000-500=500

a) (44 x 52 x 60) : (11 x 13 x 15) 

= 44 x 52 x 60 : 11 : 13 : 15

= (44 : 11) x (52 : 13) x (60 : 15)

= 4 x 4 x 4 

= 64

b) 2016 x 20152015 - 2015 x 20162016

= 2016 x (20150000 + 2015) - 2015 x (20160000 + 2016)

= 2016 x (2015 x 10000 + 2015) - 2015 x (2016 x 10000 + 2016)

= 2016 x [2015 x (10000 + 1)] - 2015 x [2016 x (10000 + 1)]

= 2016 x 2015 x 10001 - 2015 x 2016 x 10001

= 0

c) 46 x 37 + 46 x 63 + 54 x 267 - 54 x 167

= 46 x (37 + 63) + 54 x (267 - 167)

= 46 x 100 + 54 x 100

= 100 x (46 + 54)

= 100 x 100

= 10000 

giai ho mik voi

a) 22 + ( - 47 ) + ( - 153 ) + 8

= ( 22 + 8 ) - ( 47 + 153 )

= 30 - 200

= - 170

b) 9 + ( - 10 ) + 11 + ( - 12 ) + 13 + ( - 14 ) + 15 + ( - 16 )

= ( 9 - 10 ) + ( 11 - 12 ) + ( 13 - 14 ) + ( 15 - 16 )

= - 1 - 1 - 1 - 1

= - 4

c) 371 + ( - 271 ) + ( - 531 )

= ( 371 - 271 ) - 531

= 100 - 531

= - 431

d) ( - 18 ) - 54 + ( - 46 ) - 62

= ( - 18 - 62 ) - ( 54 + 46 )

= 80 - 100

= - 20

tính = cách hợp lí nhất

g: \(=-457+237+23-123=-220-100=-320\)

h: \(=\left(1-3\right)+\left(5-7\right)+...+\left(41-43\right)+\left(45-47\right)\)

\(=\left(-2\right)+\left(-2\right)+...+\left(-2\right)+\left(-2\right)\)

\(=-2\cdot12=-24\)

i: \(=173+27-46-54-19=200-100-19=100-19=81\)

k: \(=-52+82+49-15+13-36\)

\(=30+34-23\)

=30+11

=41

l: \(=\left(3-5\right)+\left(7-9\right)+\left(11-13\right)+\left(15-17\right)\)

\(=\left(-2\right)+\left(-2\right)+\left(-2\right)+\left(-2\right)\)

=-8

m: \(=\left(1-2\right)+\left(3-4\right)+...+\left(2001-2002\right)+2003\)

\(=2003-1-1-...-1\)

\(=2003-1001=1002\)

n:Số số hạng là:

\(\left[\left(-51\right)-\left(-99\right)\right]:1+1=49\left(số\right)\)

Tổng là \(\left(-51-99\right)\cdot\dfrac{49}{2}=-3675\)

o: \(=-62-38+1523-2523-92\)

\(=-100+1000-92=900-92=808\)

a)(-45).312-312-54.312

=312.[(-45)-1-54]

=312.(-100)

=-31200

b)217.(-46)-217.15-217.40+27

=217.[(-46)-15-40]+27

=217.(-101)+27

=217.[(-100)+(-1)]+27

=-21700+(-217)+27

=-21700+(-190)

=-21890

-43.15+43.48-48.43+48.15

=(-43.15+48.15)-(43.48-48.43)

=5.15-0=75