(-4).(+125).(-25).(-6).(-8)

= [-4.(-25)].[125.(-8)].(-6)

= 100.(-1000).(-6)

= -100000.(-6)

= 600000

5+ 5 + 5 + 5+ 5 + 5 +5+ 5 + 5 +5=5x10=50

25 + 25 + 25 + 25 + 25 + 25 +25 + 25=25x8=200

45 + 45 + 45 + 45 + 15 + 15 + 15 + 15=(45x4)+(15x4)=180+60=240

5+ 5 + 5 + 5+ 5 + 5 +5+ 5 + 5 +5
= 5 x 10
= 50

25 + 25 + 25 + 25 + 25 + 25 +25 + 25
= 25 x 8
= 200

45 + 45 + 45 + 45 + 15 + 15 + 15 + 15
= 45 x 4 + 15 x 4
= 180 + 60
= 240

2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18
= (2 + 18) + (4 + 16) + (8 + 12) + (6 + 14) + 10
= 20 + 20 + 20 + 20 + 10 
= 20 x 4 + 10
= 80 + 10
= 90 

125 + 125 + 125 + 125 - 25 - 25 - 25 - 25 
= 4 x (125 - 25) 
= 4 x 100 
= 400
(Tick cho mk pls ^^)

18 . 26 . 25 . 9

= ( 18 . 25 ) . ( 26 . 9 )

= 450 . 234

= 105 300

2 . 450 . 25 . 8

= ( 2 . 450 ) . ( 25 . 8 )

= 900 . 200

= 180 000

55 . 17 .16 . 15

( 15 . 16 ) . ( 55 . 17 )

= 240 . 935

= 224 400

125 . 98 . 2 . 8 . 25

( 25 .8 ) . ( 125 . 2 ) . 98

= 200 . 250 . 98

= 50 000 . 98

= 4 900 000

15 . 6 . 4 . 125 . 8

= ( 125 . 4 ) . ( 15 . 8 ) . 6

= 500 . 120 . 6

= 60 000 . 6

= 36 000

chúc bạn may mắn . tick cho mình nhé !

a: \(=\left(18\cdot25\right)\cdot9\cdot26=234\cdot450=105300\)

b: \(=\left(25\cdot8\cdot2\right)\cdot450=400\cdot450=180000\)

c: \(=\left(55\cdot17\right)\cdot16\cdot15=240\cdot935=224400\)

d: \(=125\cdot8\cdot2\cdot25\cdot98=98\cdot50\cdot1000=4900000\)

e: \(=125\cdot8\cdot15\cdot4\cdot6=1000\cdot360=360000\)

18 . 26 . 25 . 9

= ( 18 . 25 ) . ( 26 . 9 )

= 450 . 234

= 105 300

2 . 450 . 25 . 8

= ( 2 . 450 ) . ( 25 . 8 )

= 900 . 200

= 180 000

55 . 17 .16 . 15

( 15 . 16 ) . ( 55 . 17 )

= 240 . 935

= 224 400

125 . 98 . 2 . 8 . 25

( 25 .8 ) . ( 125 . 2 ) . 98

= 200 . 250 . 98

= 50 000 . 98

= 4 900 000

15 . 6 . 4 . 125 . 8

= ( 125 . 4 ) . ( 15 . 8 ) . 6

= 500 . 120 . 6

= 60 000 . 6

= 36 000

chúc bạn may mắn . tick cho mình nhé !

(-4).125.(-25).(-6).(-8)

= (-4 . (-25)) . (125 . (-8)) . (-6)

= 100 . (-1000) . (-6)

= 100 . 6000

= 600000

kb vs tớ nha các bạn

thanks

(-4).125.(-25).(-6).(-8)

= [ 125. (-8)].[(-25).(-4)].(-6)

= (-1000). 100. (-6)

= -100000.(-6)

= 600 000

\(\left[\left(-4\right).\left(-25\right)\right].\left[125.\left(-8\right)\right].\left(-6\right)\)

\(=100.\left(-1000\right).\left(-6\right)\)

\(=6.10^{2+3}=6.10^5\)

\(=600000\)

(–4) . (+125) . (–25) . (–6) . (–8)

= [(–4) . (–25)] . [(+125) . (–8)] . (–6)

= (4 . 25) . [–(125 . 8)] . (–6)

= 100 . (–1000) . (–6)

= 100 . 1000 . 6 = 600 000