\(123\cdot456+456\cdot321-256\cdot444\)
\(=\left(123+321\right)\cdot456-256\cdot444\)
\(=444\cdot456-256\cdot444\)
\(=444\cdot\left(456-256\right)\)
\(=444\cdot200\)
\(=88800\)
là 88800
hok tốt
Bài làm :
123 x 456 + 456 x 321 - 256 x 444 = 56088 + 146376 - 113664
= 88800
Đ/S : 88800
Ta có: \(123\times456+456\times321-256\times444\)
\(=444\times456-256\times444\)
\(=444\times\left(456-256\right)\)
\(=444\times200\)
\(=444\times200=88800\)
123 × 456 + 456 × 321 - 256 × 444
= 456 × ( 123 + 321 ) - 256 × 444
= 456 × 444 - 256 × 444
= 444 × ( 456 - 256 )
= 444 × 200
= 444 × 100 × 2
= 44400 × 2
= 88800
123×456+456×321−256×444
=444×456−256×444
=444×(456−256)
=444×200
=88800
123x456+456x321-256x444
=456x(123+321)-256x444
=456x444-256x444
=444x(456-256)
=444x200
=88800
\(123\times456+456\times321-256\times444\)
\(=456\times\left(123+321\right)-256\times444\)
\(=456\times444-256\times444\)
\(=444\times\left(456-256\right)\)
\(=444\times200\)
\(=88800\)
123x456+456x321-256x444
=123+321x456-256x444
=444x(456-256)
=444x200
=88800
