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a: \(13\cdot\left(-7\right)=-91\)
b: \(\left(-8\right)\cdot\left(-25\right)=200\)
c: =>x+4=98-20=78
hay x=74
g: \(=35\left(12+182-94\right)=35\cdot100=3500\)
h: \(=-8537+1975+8537=1975\)
a. 24 x (-125 + 225)
= 24 x 100
=2400
b. -125 x ( 24 -36 )
= -125 x -12
= 1500
c. 512 x (2 -128+128)
= 512 x 2
= 1024
d. \([4.25].\left[\left(-2\right).\left(-5\right)\right].\left[125.\left(-8\right)\right]\)
= 100.10.(-1000)
= -1000000
a. 24 x (-125 + 225)
= 24 x 100
=2400
b. -125 x ( 24 -36 )
= -125 x -12
= 1500
c. 512 x (2 -128+128)
= 512 x 2
= 1024
d.
= 100.10.(-1000)
= -1000000
13 . ( - 7 ) = - 91
( - 8 ) . ( - 25 ) = 200
25 . ( - 47 ) . ( - 4 ) = ( - 100 ) . ( - 47 ) = 4700
8 . ( 125 - 3000 ) = 8 . 125 - 3000 = 1000 - 3000 = - 2000
512 . ( 2 - 128 ) - 128 . ( - 512 ) = 512 . ( 2 - 128 + 128 ) = 512 . 2 = 1024
13 x (-7) = -91
(-8) x (-25) = 200
25 x (-47) x (-4) = 4700
8 x (125 - 3000) = -23000
512 x (2 - 128) - 128 x (-512) = 1024
Nếu sai thì thôi
Học tốt!!!
a) \(\left(-25\right).8.\left(-4\right).\left(-125\right).3\)
\(=\text{ }\left[\left(-25\right).\left(-4\right)\right].\text{ }\left[8.\left(-125\right)\right].3\)
\(=100.\left(-1000\right).3\)
\(=-100000.3\)
\(=-300000\)
b) \(27.\left(-17\right)+17.\left(-73\right)\)
\(=\left(-27\right).17+17.\left(-73\right)\)
\(=17\left[\left(-27\right).\left(-73\right)\right]\)
\(=17.\left(-100\right)\)
\(=-1700\)
c) \(512\left(2-128\right)-128\left(-512\right)\)
\(=512.2-512.128-128\left(-512\right)\)
\(=512.2-128\left[512+\left(-512\right)\right]\)
\(=1024-128.0\)
\(=1024-0\)
\(=1024\)
a, (-25).8.(-4).(-125).3
= (-25).(-8).(-4).(-125).(-3)
= {(-25).(-4)}.{(-8).(-125)}.(-3)
= 100.1000.(-3)
= 100000.(-3)
= -300000
b, 27.(-17)+17.(-73)
= 27.17+17.73
= 27.(17+73)
=27.90
=2430
c, 512.(2-128)-128.(-512)
= 512.(-2) - 512.128 - (-128).512
= { 512.{(-2)-128-(-128)}
= 512.{(-2).256}
=512.(-512)
= -262144
1) 125.(-24) + 24.225.
\(=24\left(-125+225\right)=24.100=2400.\)
2) 512.(2 – 128) – 128. (-512).
\(=512\left(2-128+128\right)=512.2=1024.\)
a) \(175-\left(-25\right)+62-\left(1200+62\right)\)
\(=\left(175+25\right)+\left(62-62\right)-1200\)
\(=200-1200\)
\(=-1000\)
b) \(\left(-25\right)\cdot8\cdot\left(-4\right)\cdot\left(-125\right)\cdot3\)
\(=3\left[\left(-25\right)\cdot\left(-4\right)\right]\left[\left(-125\right)\cdot8\right]\)
\(=3\cdot100\cdot\left(-1000\right)\)
\(=-300000\)
c) \(27\cdot\left(-17\right)+17\cdot\left(-73\right)\)
\(=27\cdot\left(-17\right)+73\cdot\left(-17\right)\)
\(=\left(-17\right)\cdot\left(27+73\right)\)
\(=\left(-17\right)\cdot100\)
\(=-1700\)
d) \(512\cdot\left(2-128\right)-128\cdot\left(-512\right)\)
\(=512\cdot\left(2-128\right)+128\cdot512\)
\(=512\left(2-128+128\right)\)
\(=512\cdot2\)
\(=1024\)
a) 13 . (-7)
= -91
b) (-8) . (-25)
= 200
c) 25 . (-47) . (-4)
= -1175 . -4
= 4700
d) 512 . (2-128) - 128 . (-512)
= -64512 - -65536
= 1024
k mình nha
Chúc bạn học giỏi
Mình cảm ơn bạn nhiều
a)13.(-7)=-91
b)(-8).(-25)=200
c)25.(-47).(-4)=-1175.(-4)=4700
d)512.(2-128)-128.(-512)=512.(-126)-128.(-512)=-64512-128.(-512)=-64512-(-65536)=1024
a) (7-8) + 216
= -1 + 216
= 215
b) 512 . (2- 128) - 128. (-512)
=512 . (-126) -128 .(-512)
= (-512). 126 -128 .(-512)
= (-512) . (126 - 128)
= (-512) . (-2)
= 1024
a) (7-8)+126
=-1+126
=125
b) 512.(2-128)-128.(-512)
=512.(-126)-128.(-512)
=-512.(126-128)
=-512.(-2)
=1024
hoc tốt
lay may tinh bam la xong
hihihihihihihhihiiiiiiiiiiiiiiiiiihihhih
a 8.125-8.3000=1000-24000=-23000
b 512.2-512.128-128.(-512)=512.2-[512.128+128.(-512)]=1024-0=1024
c 66.25+5.66+66.14+33.66=66.(25+5+14+33)=66.77=5082
tick mình nhiều nha ! Thank you