a)   39,54 + 8,375 

= 47,915

b)   4,9 x 0,24

= 1,176

c)    496,71 - 99,873

= 396,837

d)   14,13 : 4,5

= 3,14

\(a.39,54+8,375=47,915\)

\(b.4,9\text{×}0,24=1,176\)

\(c.496,71-99,873=396,837\)

\(d.14,13:4,5=3,14\)

Y x 2,5 = 8,375

Y = 8,375 : 2,5 = 3,35

=> D

D

77,04 m3 + 8,56 m3 = 85,6 m3

\(8,56ha=0,0856km^2\)

\(8,56ha=85600m^2=0,0856km^2\)

=8,56+(6,5+3,5)+(5,5+4,5)+2,5

=8,56+10+10+2,5

=31,6

12,3 x 3,12 + 12,3 + 6,48

= 12,3 x ( 3,12 + 6,48 )

= 12,3 x 10

= 123

2,23 x 8,56 + 8,56 x 7,77

= 8,56 x ( 2,23 + 7,77 )

= 8,56 x 10

= 85,6

4,98 x 67,34 + 32,66 + 4,98

= 4,98 x ( 67,34 + 32,66 )

= 4,98 x 100

= 498

Nhớ tick mik nha !!!

12,3x3,12+12,3x6,48

=12,3x(3,12+6,48)

=12,3x9,6

=118,08

2,23x8,56+8,56x7,77

=8,56x(2,23+7,77)

=8,56x10

=85,6

4,98x67,34+32,66x4,98

=4,98x(67,34+32,66)

=4,98x100

=498

nếu đúng thì tick cho tớ nhé

a) 8,56 d m 2 =   8 56 100 d m 2       ....Đ....

b) 2060m = 20km 60m        ....S....

$(75+45):7,5-8,56$

$=120:7,5-8,56$

$=16-8,56$

$=7,44$

(75 + 45) : 7,5 - 8,56

= 120 : 7,5 - 8,56 

= 16 - 8,56

= 7,44

\((75+45):7,5-8,56\\=120:7,5-8,56\\=16-8,56\\=7,44\)

   (75 + 45) : 7,5 - 8,56

= 120 : 7,5 - 8,56

= 16 - 8,56

= 7,44