\(1,25:0,5+1,25\times8\\ =1,25\times2+1,25\times8\\ =1,25\times\left(2+8\right)\\ =1,25\times10\\ =12,5\)

250 ×5 ×2

= 250 ×10

= 2500

$12,5x35,4x0,8:0,1\\=12,5x35,4x0,8x10\\=12,5x8x35,4\\=100x35,4=3540\\102,3:0,25:40+98,3:1,25:8=102,3:(0,25x40)+98,3:(1,25x8)\\=102,3:10+98,3:10\\=10,23+9,83=20,06$

TICK CHO MÌNH NHÉ

Giải:

12,5 x 35,4 x 0,8 : 0,1                      

= ( 12,5 x 0,8 ) x ( 35,4 : 0,1 )

= 10 x 354

= 3540

a, \(=16,24\left(12-3+1\right)\)

\(=16,24.10=162,4\)

b, \(=1,25\left(1+2+7\right)\)

\(=1,25.10=12,5\)

c, \(=2,46\left(2+8\right)\)

\(=2,46.10=24,6\)

\(a,=16,24\times12-16,24\times3+16,24\times1\\ =16,24\times\left(12-3+1\right)=16,24\times10=162,4\\ b,=1,25\times\left(1+2+7\right)=1,25\times10=12,5\)

a 16.24( 12-10+3)=16.24 x 5=81.2

b  1.25(1+2+7)=1.25 x 10= 12.5

c  2.46 x 2 + 2.46 x8 = 2.46(2 + 8)=2.46 x 10=24.6

9,83 :(1,25 *8) + 10,23 : (40 * 0,25)

9,83 : 10 + 10,23 : 10

(9,83+ 10,23) : 10

20,06: 10

2,006

=2,006

????????

3,5 x 8 x 3 x 1,25

= ( 1,25 x 8 ) x ( 3 x 3,5 )

= 10 x ( 3 x 3,5 )

= 10 x 10,5

= 105

nha bn

\(3,5\times8\times3\times1,25\)

\(=\left(8\times1,25\right)\times\left(3,5\times3\right)\)

\(=10\times10,5\)

\(=105\)

3,5x8x3x1,25

=[3,5x8]x3x1,25

=28x3x1,25

=84x1,25

=105

chúc bạn học giỏi hơn

tk mình nha

3,5 x 8 x 3 x 1,25

= (3,5 x 3) x (8 x 1,25)

= 10,5 x 10

= 105

= (3,5x3) x (8x 1,25)

=10,5 x 10

=105

k nha

3 , 5 x 8 x 3 x 1 , 25

= 3 , 5 x 3 x 10

= 35 x 3

= 105

= 3,5 x 3 x 8 x 1,25 

= 3,5 x 3 x 10

= 3,5 x 10 x 3

= 35 x 3

= 75