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18.25.26.29
=9.2.25.2.13.29
=9.(2.25.2).377
=9.100.377
=9.100.377
=3393.100
=339300
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 !
45x48-90x24+145=145
4320:9-8640:18+750=750
754x75-2262x25+4568=4568
15*6*4*125*8=360000
14*25*6*7=14700
24*3*5*10=3600
18*26*25*9=105300
12*5*15*7=6300
15 x 6 x 4 x 125 x 8
= (15 x 4) x (125 x 8) x 6
= 60 x 1000 x 6
= 60000 x 6
= 360000
14 x 25 x 6 x 7
= (14 x 25) x 6 x 7
= 350 x 6 x 7
= 2100 x 7
= 14700
24 x 3 x 5 x 10
= (24 x 5) x 10 x 3
= 120 x 10 x 3
= 1200 x 3
= 3600
18 x 26 x 25 x 9
= (26 x 25) x 18 x 9
= 650 x 18 x 9
= 11700 x 9
= 105300
12 x 5 x 15 x 7
= (12 x 15) x 5 x 7
= 180 x 5 x 7
= 900 x 7
= 6300
a) - ( 231 + 16 - 75 ) + ( 25 - 9 )
= - 231 - 16 + 75 + 25 - 9
= - 247 + 100 - 9
= -147 - 9
= -156
b) - ( - 231 + 17 ) - ( 54 + 23 )
= 231 + 17 - 54 - 23
= 248 - 31
= 217
c) - [ ( - 25 ) - 7 + ( 8 - 16 ) ] - [ ( - 21 + 3 ) - 7 ]
= - [-32 + (-8) ] - [ -18 - 7]
= - (-40) - (-25)
= 40 + 25
= 65
d) - ( - a - b - c ) + ( - c - b + a )
= a + b + c - c - b + a
= a+ b + 0 - b + a
= a + a + b - b
= a + a + 0
= 2a
e) ( - 26 ) - [ - ( 18 - 6 + 7 ) + ( 8 - 9 ) ]
= -26 - [ -18 + 6 - 7 + 8 - 9]
= -26 - (-20)
= -26 + 20
= -6
a: =-231-16+75+25-9
=-240+100-16
=-140-16=-156
b: =231-17-77=231-94=137
d: =a+b+c-c-b+a=2a
18.26.25.9
=(18.25).(26.9)
=450.234=105300