a)=(2*50)*(4*25)*(3*5)

   = 100  *  100  *  15 = 150000

a)=(2x50)x(4x25)x(3x5)

   = 100x100x15=150000

b = ( 25 * 20 ) * (125 * 8 ) - ( 8 * 125 ) * ( 20 * 5 )

b =     500    *  1000    -   1000     *    100

b =          500000        -           100000

b =                        400000

\(4.125.25.8\)

\(=\left(4.25\right).\left(125.8\right)\)

\(=100.1000\)

\(=100000\)

\(2.3.4.5.50.25\)

\(=\left(2.50\right).\left(4.25\right).\left(3.4.5\right)\)

\(=100.100.60\)

\(=10000.60\)

\(=600000\)

\(2.8.50.25.125\)

\(=\left(2.50\right).\left(8.125\right).25\)

\(=100.1000.25\)

\(=100000.25\)

\(=2500000\)

2 x 8 x 50 x 25 x 125       

= ( 125 x 8 ) x ( 50 x 2 ) x 25

= 1000 x 100 x 25

=2500000

4 x 125 x 25 x  8 

= ( 125 x 8 ) x ( 25 x 4 )

= 1000 x 100

=100000

2 x 3 x 4 x 5 x 50 x 25    

= ( 25 x 4 ) x ( 2 x 50 ) x ( 3 x 5 )

= 100 x 100 x 15

= 150000

  25 x 20 x 125 x 8 -  8 x 20 x 5 x 125

= ( 25 x 20 ) x ( 125 x 8 ) - ( 20 x 5 ) x ( 125 x 8 )

= 500 x 1000 - 100 x 1000

= 500000 - 100000

= 400000

4 x 125 x 25 x 8

= (4x25) x (125x8)

=100x1000

=100000

4 x 125 x 25 x 8

= ( 4 x 25 ) x ( 125 x 8 )

= 100         x 1000

=     100000

   2 x 8 x 50 x 25 x 125

=  ( 2 x 50 ) x ( 8 x 125 ) x 25

=    100       x 1000        x 25

=     100000                  x 25

=              2500000

    2 x 3 x 4 x 5 x 50 x 25

=  ( 2 x 50 ) x ( 4 x 25 ) x 3 x 5

=   100        x    100     x 3 x 5 

=        10000               x 15

=       150000

  25 x 20 x 125 x 8 - 8 x 20 x 5 x 125

= ( 8 x 125 ) x 25 x 20 - ( 8 x 125 ) x ( 20 x 5 )

=  1000        x 50        - 1000         x 100

=       50000                - 100000

=           - 50000

Chúc bạn hok tốt !

=500000-100000

=400000

b) 25 x 20 x 125 x 8 - 8 x 20 x 5 x 125

= 25 x 20 x 25 x 5 x 8 - 8 x 20 x 5 x 5 x 25

= 25 x 20 x 25 x 40 - 8 x 10 x 25 x 25

= 500 x 1000 - 80 x 625

= 500 000 - 50000

= 450000

 25 x 20 x 125 x 8 - 8 x 20 x 5 x 125

= 25 x 20 x 25 x 5 x 8 - 8 x 20 x 5 x 5 x 25

= 25 x 20 x 25 x 40 - 8 x 20 x 25 x 25

= 500 x 1000 - 160 x 625

= 500 000 - 100000

= 400000

a, 25*5*13*4=6500

87*125*8*4=348000

b,50*76*2=7600

19*4*25*8=15200

c,303*20*6*5=181800

4*889*25=88900

a)6500,348000.

b)7600,15200.

c)181800,88900.

a,= ( 25x4 ) x ( 13x5 )

   = 100 x 65

    = 6500

     = ( 125x8 ) x ( 87x4 )

      = 1000 x 348

       = 348000

b,    = ( 50x2 ) x 76

        = 100 x 76

        = 7600

         = ( 4x25 ) x ( 19x8 )

          =100 x 152

           = 15200

          c, = ( 20x5 ) x ( 303x6 )

               = 100 x 1818

                = 181800

               = ( 4x25 ) x 889

               = 100 x 889

                = 88900

`5 xx 74 xx 2  = 5xx 2 xx 74 = 10xx74 = 740`

`4xx196xx5 = 4xx5xx196 = 20xx196 = 3920`

`(50 + 25)xx4 = 50xx4 + 25xx4 = 200 + 100 = 300`

`125xx(80+8) = 125xx80 + 125xx8 = 10000 + 1000 = 11000`

12 x 125 x 24 x 50

= (12 x 50) x (125 x 24)

= 600 x 3000

= 1800000.

(Tíck cho mình với nhé!)

12x125x24x50

=1500x24x50

=36000x50

=1800000

\(\text{12 x 125 x 24 x 50}=1800000\)

a: =1250:25=50

b: =234(45+55)+234=23400+234=23634

c: =1000x1000=1000000