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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
=100;(250;[450-(22.52-22.52)])
=100;(250;450)=100;(5/9)=180
nhớ **** nha
a,714+382+286+318
\(=\left(714+286\right)+\left(382+318\right)\)
\(=1000+700\)
= \(1700\)
b,18.73+15.18+12.18
\(=18.\left(73+15+12\right)\)
\(=18.100\)
\(=1800\)
c,(37+63) : {250:[450-(4.5^3-2^2.25)]}
\(=100:\left\{250:\left[450-\left(2^2.125-2^2.25\right)\right]\right\}\)
\(=100:\left\{250:\left[450-\left(2^2.\left(125-25\right)\right)\right]\right\}\)
\(=100:\left\{250:\left[450-400\right]\right\}\)
\(=100:\left\{250:50\right\}\)
\(=100:5\\ =20\)
CHÚC BANJ HỌC TỐT!!
a) 714+382+286+318
=(714+286)+(382+318)
=1000+700
=1700
b) 18.73+15.18+12.18
=18.(73+15+12)
=18.100
=1800
c) (37+63):{250:[450-(4.5^3-2^2.25)]}
=100:{250:[450-(4.125-4.25)]}
=100:{250:[450-4.(125-25)]}
=100:{250:[450-4.100]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
-Chúc bạn học tốt-
\(=100:\left\{250\left[450-\left(4\cdot125-4\cdot25\right)\right]\right\}\\ =100:\left[250\left(450-400\right)\right]\\ =100:\left(250\cdot50\right)=100:12500=12,5\)
=100:{250.[450-(4.125-4.25)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
\(180:\left\{300:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.125-4.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(500-100\right)\right]\right\}\\ =180:\left\{300:\left[450-400\right]\right\}\\ =180:\left\{300:50\right\}\\ =180:6\\ =30\)
\(180:\left\{300:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.125-4.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.100\right)\right]\right\}\\ =180:\left\{300:\left[450-400\right]\right\}\\ =180:\left\{300:50\right\}\\ =180:6\\ =30\)
100:{250:[450-(4.53-22.25)}]
=100:{250:[450-(500-100)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
100:{250:[450-(4.5^3-2^2.25)]}
=100:{250:[450-(4.125-4.25)]}
=100:{250:[450-(500-100)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5
=20
~Chúc học tốt!~
\(100:\left\{250:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\)
= \(100:\left\{250:\left[450-\left(2^2.5^3-2^2.5^2\right)\right]\right\}\)
= \(100:\left\{250:\left[450-2^2.5^2\left(5-1\right)\right]\right\}\)
= \(100:\left[250:\left(450-100.4\right)\right]\)
=\(100:\left(250:50\right)\)
= \(100:5\)
= \(20\)
100:{250:[450-(4.53-22.25)]}
=100:{250:[450-(4.125-4.25)]}
=100:{250:[450-(500-100)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5=20
100:{250:[450-(4.53-22.25)]}
=100:{250:[450-(4.125-4.25)]}
=100:{250:[450-(500-100)]}
=100:{250:[450-400]}
=100:{250:50}
=100:5=20