224

180

nha bn  

k mk nha bn

T H A N K   Y O U

56+56+56+56=56.4=224

45+45+45+45=45.4=180

dấu chấm là dấu nhân nha

\(56+56+56+56\)

\(=56.4\)

\(=224\)

\(45+45+45+45\)

\(=45.4\)

\(=180\)

nha To the

35+35+45+45+56+56=70+90+112=272

Tk cho mk với!

35 + 35 + 45 + 45 + 56 + 56 

= ( 35 + 35 ) + ( 45 + 45 ) + ( 56 + 56 )

= 70 + 90 + 112

= 160 + 112

= 272

35.2+45.2+56.2=(35+45+56).2=136.2=272

24.(56-45)+56.(-24-45)

= 24.56-24.45-56.24-56.45

= (24.56-56.24)-(24.45+56.45)

= 0-45.(24+56)

= -45.80

= -3600

 24 . (56 - 45) + 56(-24 - 45)

= 24 . 56 - 24 . 45 + 56 . (-24) - 56 . 45

= [24 . 56 + 56 . (-24)] - (24 . 45 + 56 . 45)

= 56 . [24 + (-24)] - 45(24 + 56)

= 56 . 0 - 45 . 80 = 0 - 3600 = -3600 

256,23 + 12,56 = 268,79

56,23 + 12,45 = 68,68

89,67 - 23,45 = 66,22

1,23 + 34,67 = 35,9

19,56 + 45,65 = 65,21

kp voi : http://olm/thanhvien/gop123 va mih dj

1 2 + − 1 2 + − 2 3 + 2 3 + 3 4 + − 3 4 + − 4 5 + 4 5 + 5 6 + − 5 6 = 0

1 2 + − 1 2 + − 2 3 + 2 3 + 3 4 + − 3 4 + − 4 5 + 4 5 + 5 6 + − 5 6 = 0

Đây nha

Lời giải chi tiết:

38 < 83

45 + 23 > 45 – 24

12 + 37 = 37 + 12

56 – 0 = 56 + 0

38 < 83

45 + 23 > 45 -24

12 +37 = 37+12

56-0=56+0

x=-538

56 + 34 = 90

56 + 45 = 101 

  Chúc bn hok tốt

\(56+34=90\)

\(56+45=101\)

hok tốt

56 + 34= 90

56 + 45 = 101

\(56.45+56.55\)

\(=56.\left(45+55\right)\)

\(=56.100\)

\(=5600\)

chuc bn hoc gioi!

nhae

= 5600

56 x 45 + 56 x 55 = 56 x 100

                           = 5600

a) 5 13 + − 5 7 + − 20 41 + 8 13 + − 21 41 = 5 13 + 8 13 + − 20 41 + − 21 41 + − 5 7 = − 5 7

b) 1 28 + − 1 14 + 3 28 + − 1 7 + 3 14 = 1 28 + 3 28 + − 1 14 + 3 14 + − 1 7 = 1 7

c)  1 2 + − 2 3 + 3 4 + − 4 5 + 5 6 + − 5 6 + 4 5 + − 3 4 + 2 3 + − 1 2 = 1 2 + − 1 2 + 3 4 + − 3 4 + − 4 5 + 4 5 + 5 6 + − 5 6 = 0