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\(125+173+175+27=\left(125+175\right)+\left(173+27\right)=300+200=500\)

\(125\times75+125\times25=125\times\left(75+25\right)=125\times100=12500\)

\(34000:\left(125.8\right)=34\)

34 000 : 125 : 8
= 34

=272:8

=34

\(4\times826\times125\times2\\=(4\times2\times125)\times826\\=(8\times125)\times826\\=1000\times826\\=826000\)

\(4\times826\times125\times2\)

\(=\left(4\times125\times2\right)\times826\)

\(=\left(500\times2\right)\times826\)

\(=1000\times826\)

\(=826000\)

a) 19,17x25x4=19,17(25x4)=19,17x100=1917

b)1,79x(8x125)=1,79x1000=1790

chúc bạn học tốt

4 x 826 x 125 x 2 

= (4 x 125 ) x ( 826 x 2 )

= 500 x 1652 

= 826000

#HOK TỐT#

Có 4 x 826 x 125 x 2 

=(4\(\times\)2)\(\times\)125\(\times\)826

=8\(\times\)125\(\times\)826

=1000\(\times\)826=826000

Hok tốt

Thuận

Trl :

4 x 826 x 125 x 2 

= ( 125 x 4 x 2 ) x 826

= 1000 x 826

= 826000

# Hok tốt #

`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`

\(125\times25\times8\times4\)

\(=\left(125\times8\right)\times\left(25\times4\right)\)

\(=1000\times100\)

\(100000\)

125 x 25 x 8 x 4

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

= 1000 x 100

= 100 000

c)125 x 25 x 8 x 4

=(125 x 8 ) + (25 x4 )

=1000 +100

=1100

Học tốtt=3

 a) 1875 : 2 + 125 : 2

=(1875+125):2 = 2000:2=1000

=(1875+125):2

=2000:2=1000

\(1875:2+125:2\)
\(=\left(1875+125\right):2\)
\(=2000:2\)
\(=1000\)

cách làm như sau:

    125.[85+(12.13+144)/15+120/4] = 125.[85+(156+144)/15+120/4] = 125.(85+300/15+120/4) = 125.(85+20+30) = 125.135=16875