a. 125 x 25 x 8

=(125x8) x25

=    1000 x25

= 25000

a. 125 x 25 x 8

= ( 125 x 8 ) x 25 

= 1000 x 25

= 25000

=1000x25=25000

a) 267 x 46 + 267 x 54

= 267 x ( 46+ 54)

= 267 x 100

= 26700

b) 369 x 25 + 369 x 74 x 369

= 369 x 25 + 369 x 74 x 369 x 1

= 369 x( 74 +25 +1)

= 369 x 100

=36900

c) 20 x 678 x 5

= ( 20 x 5) x 678

= 100 x 678

= 67800

d) 25 x 8 x 125 x 4

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

=100 x 1000

= 100000

a) 267 x ( 46 + 54 )

=267 x 100

=26700

a:267x46+267x54

=267x(46+54)

=267x100

=16700

b:=369x(25+74+1)

=369x100

=36900

`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`

giải giùm mình nhen mn. lu

\(a,\left(25\times32\right):8=25\times\left(32:8\right)=25\times4=100\\ b,\left(56\times125\right):7=\left(56:7\right)\times125=8\times125=1000\)

=100

=1000

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

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

chúc bạn học tốt

\(125\times25\times8\times4\)

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

\(=1000\times100\)

\(100000\)

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: =100x26=2600

b: =78x10=780

c: =67x100=6700

d: =1000x575=575000

\(4\times26\times25=\left(4\times25\right)\times26=100\times26=2600\\ 63\times78-53\times78=\left(63-53\right)\times78=10\times78=780\\ 67\times92+67\times8=67\times\left(92+8\right)=67\times100=6700\\ 8\times23\times25\times125=\left(8\times125\right)\times\left(23\times25\right)=1000\times575=57500\)

a) 36 x 25 x 4 = 36 x ( 25 x 4) = 36 x 100 = 3600

18 x 24 : 9= 24 x ( 18:9) = 24 x 2 = 48

41 x 2 x 8 x 5= 41 x 8 x ( 5x2) = 41 x 8 x 10 = 3280

b) 108 x (23 + 7)= 108 x 30 = 3240 

215 x 86 + 215 x 14 = 215 x ( 86 + 14) = 215 x 100 = 21500 

53 x 128 – 43 x 128= 128 x ( 53 - 43) = 128 x 10 = 1280

\(a,35\times25\times4=36\times100=3600\)

\(18\times24:9=18:9\times24=2\times24=48\)

\(41\times2\times8\times5=\left(2\times5\right)\times\left(41\times8\right)=10\times328=3280\)

\(b,108\times\left(23+7\right)=108\times30=3240\)

\(215\times86+215\times14=215\times\left(86+14\right)=215\times100=21500\)

\(53\times128-43\times128=128\times\left(53-43\right)=128\times10=1280\)

các bạn ơi nhớ mình là ai không các bạn hay trả lời câu hỏi của mình đó

a: \(17,5\cdot4\cdot3\cdot25\)

\(=17,5\cdot3\cdot\left(4\cdot25\right)\)

\(=52,5\cdot100=5250\)

b: \(25,6\cdot7,5+25,6\cdot2,5\)

\(=25,6\left(7,5+2,5\right)\)

\(=25,6\cdot10=256\)

c: \(4,52\cdot12,5-2,5\cdot4,25\)

\(=2,5\left(4,52\cdot5-4,25\right)\)

\(=2,5\cdot18,35=45,875\)

d: \(7,7\cdot9+7,7\)

\(=7,7\left(9+1\right)\)

\(=7,7\cdot10=77\)