\(2.21.18+12.9+76.36\)

\(=36.21+36.3+76.36\)

\(=36.\left(21+3+76\right)\)

\(=36.100=3600\)

b)  \(32.27+154.69+73.32-69.54\)

\(=32.\left(27+73\right)+69.\left(154-54\right)\)

\(=32.100+69.100\)

\(=100.\left(32+69\right)\)

\(=100.101=10100\)

Đáp số: 4700

32.27 + 47.73 + 27.15

= (32.27+27.15)+47.73

=27.(32+15)+47.73

= 27.47 + 47.73

= 47.(27+73)

= 47. 100

=4700

46.37+93.46+54.61+69.54

=46.(93+37)+54.(61+69)

=46.130+54.130

=130.(46+54)

=130.100

=13000

46 . 37 + 93 . 46 + 54 . 61 + 69 . 54

= 46 . ( 37 + 93 ) + 54 . ( 61 + 69 )

= 46 . 130 + 54 . 130

= 130 . ( 46 + 54 )

= 130 . 100

= 13000

46.37+93.46+54.61+69.54

= 46.(37+93)+54.(61+69)

= 46.130+54.130

= (46+54).130

= 100.130

= 13000

(-32).74-32.27+32

=32.(-74)-32.27+32

=32.[(-74)-27+1]

=32.(-100)

=-3200

\(-32\cdot74-32\cdot27+32\)

\(=32\left(-74-27+1\right)\)

\(=32\cdot\left(-100\right)\)

=-3200

(-32).74-32.27+32

= 32.(-74)-32.27+32

= 32.[(-74)-27+1]

= 32.(-100)

= -3200

69 . 54 + 69 . 45 + 69

= 69 . 54 + 69 . 45 + 69 . 1

= 69 . ( 54 + 45 + 1 )

= 69 . 100

= 6900

69x54+69.45+69

=69x(54+45)+69

=69x99+69

=6831+39

=6870

k mình nhé

46.37 + 93.46 + 54.61 + 69.54

= 46.(37+93) + 54.(61+69)

= 46. 130 + 54.130

= 130.(46+54)

= 130.100 = 13 000

46 . 37 + 93 . 46 + 54 . 61 + 69 . 54

= 46 . (37+ 93) + 54 . (61 + 69)

= 46 . 130 + 54 . 130

= (46 + 54) . 130

= 100 . 130

= 13000

   46 . 37 + 93.46+54.61 + 69 . 54

= 46 . (37 + 93) + 54 . ( 61 + 69)

= 46 . 130 + 54 . 130

= ( 46 + 54) . 130

= 100 .130

=13000

=378 x (24 + 27 + 49)
=378 x          100
= 37800

=378x(24+27+49)

=378x100

=37800

cho mình ít coin

bằng 96 465 222

1-19/37=18/37

19/37+18/37=37/37=1

\( 19/37+(1-19/37) =19/37+1-19/37 =1\)