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\(=100:\left[250-450+4\cdot125-8\cdot25\right]\\ =100:\left[-250+500-200\right]=100:50=2\)
\(d,100:\left\{250:\left[450-\left(4.53-22.25\right)\right]\right\}\)
\(100:\left\{250:\left[450-\left(4.5^3-3^2.25\right)\right]\right\}\)
\(100:\left\{250:\left[450-175\right]\right\}\)
\(100:\left\{250:275\right\}\)
\(=100:\dfrac{10}{7}\)
\(=100.\dfrac{7}{10}\)
\(=70\)
100:{250:[450-(4 . 53-22 . 25 ] }
=100:{250:[450-(500-100)])
=100:{250:[450-400])
=100:{250:50}
=100:5
=20
\(100\div\left\{250\div\left[450-\left(4\times5^2-2^2\times25\right)\right]\right\}\)
\(=100\div\left\{250\div\left[450-\left(4\times25-4\times25\right)\right]\right\}\)
\(=100\div\left\{250\div\left[450-0\right]\right\}\)
\(=100\div\frac{250}{450}=100\times\frac{450}{250}=180\)
\(=100:\left\{250\left[450-\left(4\cdot125-4\cdot25\right)\right]\right\}\\ =100:\left[250\left(450-400\right)\right]\\ =100:\left(250\cdot50\right)=100:12500=12,5\)
=100:{250.[450-(4.125-4.25)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
a, 21.52.17 = 2.25.17 = 50.17 = 850
b, 22 + 23 + 24 = 4 + 8 + 16 = 28
c, 25.3 + 24:8 + 50: 52
= 32.3 + 16:8 + 50:25
=96 + 2 + 2
= 100
d, 112 - 102 - 32
= 121 - 100 - 9
= 21 - 9
= 12
e, 13 + 23 + 33 + 43 + 53
= ( 1+ 2+3+4+5)2
= 152
= 225
100 : { 250 : [ 450 - ( 500- 25 . 25 ) ] }
= 100 : { 250 : [ 450 - ( - 125 ) ] }
= 100 : { 250 : 575 }
hình như sai đề bạn nhé
\(=100:\left[250:\left(450-300\right)\right]\)
\(=100:\left(250:150\right)\)
\(=100:250\cdot150\)
\(=\dfrac{20\cdot5\cdot50\cdot3}{5\cdot50}\)
\(=60\)
100 : {250 : [450 - (4 x 53 - 22 x 25)]}
=> 100 : {250 : [450 - (4 x 125 - 4 x 25)]}
=> 100 : {250 : [450 - (500 - 100)]}
=> 100 : {250 : [450 - 400]}
=> 100 : {250 : 50}
=> 100 : 5
=> 20
Vậy đáp án cần tìm là 20
# Học tốt #
cái gì đây?????