57 + 469 + 374 + 531 + 426 + 143
\(=\left(57+143\right)+\left(469+531\right)+\left(374+426\right)\)
\(=200+1000+800=2000\)
98 : 96 - 2 . 24 + 7890
\(=9^2-2^5+1\)
\(=81-32+1=50\)
chúc bạn học tốt
57+469+374+531+426+143
=(57+143)+(469+531)+(374+426)
=200+1000+800
=2000
98:96-2.24+7890
=92-25+1
=81-31+1
=50+1
=21
Chúc hok tốt
nhớ k mk nha
\(57+469+374+531+143\)
\(=\left(57+143\right)+\left(469+531\right)+\left(374+426\right)\)
\(=200+1000+800=2000\)
\(9^8\div9^6-2.2^4+789^0\)
\(=9^2-2^5+1\)
\(=81-32+1\)
\(=\left(81+1\right)-32\)
\(=82-32=50\)
a, 57 + 469 + 374 + 531 + 426 + 143
= ( 57 + 143 ) + ( 469 + 531 ) + ( 374 + 426)
= 200 + 1000 + 800
= ( 200 + 800 ) + 1000
= 1000 + 1000
= 1000.2
= 2000
b, 98 : 96 - 2 . 24 + 7890
= 92 - 25 + 1
= 81 - 32 + 1
= 49 + 1
= 50
Hok tốt !
