100:(250:(325 -(4.5 mũ 3 -2 mũ 2.50)
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100.{250:[325-(4.53-22.50)]}
=100.{250:[325-(4.125-4.50)]}
=100.{250:[325-(500-200)]}
=100.{250:[325-300]}
=100.{250:25}
=100.10
=1000
100 . { 250 : [ 325 - ( 4 . 53 - 22 . 50 )]}
= 100 . { 250 : [ 325 - ( 4 . 125 - 4 . 50)]}
= 100 . { 250 : [ 325 - ( 500 - 200 )]}
= 100 . { 250 : [ 325 - 300 ]}
= 100 . { 250 : 25 }
= 100 . 10
= 1000
1.=545.(65+15-80)
=545.0
=0
2.=100:{250:[450-(4.125-4.25)]}
=100:{250:[450-4.(125-25)]}
=100:{250:[450-4.100]}
=100:{250:50}
=100:5
=20
a: \(=\left\{145-\left[130-10\right]:2\right\}\cdot5\)
\(=\left\{145-60\right\}\cdot5=85\cdot5=425\)
b: \(=100:\left\{250:\left[450-4\cdot125+4\cdot25\right]\right\}\)
\(=\dfrac{100}{250:\left[450-500+100\right]}=\dfrac{100}{250:50}=\dfrac{100}{5}=20\)
c: \(=355-5\cdot\left[64-\left(27-25\right)\right]=355-5\cdot\left[64-2\right]\)
\(=355-310=45\)
d, \(1000:\left\{250:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-\left(4.125-4.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-4.\left(125-25\right)\right]\right\}\)
\(=1000:\left[250:\left(450-400\right)\right]\)
\(=1000:\left(250:50\right)=1000:5=200\)
Chúc bạn học tốt!!!
Ta có : \(1000:\left\{250:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-\left(4.5^3-4.5^2\right)\right]\right\}\)
\(=1000:\left\{250:\left[450-4.5^2\left(5-1\right)\right]\right\}\)
\(=1000:\left[250:\left(450-400\right)\right]\)
\(=1000:\left(250:50\right)\)
\(=1000:5=200\)
Chúc bạn học tốt ^^
100:(250:(325-(4.53-22.50)))
=100:(250:(52.13-(22.53-23.52)))
=100:(250:(52.13-22.52.(5-2)))
=100:(250:(52.13-52.22.3))
=100:(250:(52.(13-12)))
=100:(250:25)
=100:10
=10
Đúng thì tk nha (bài kia t viết hơi chậm nên để 2 bạn kia làm lun :v)