Question

(138+21)×51+159×(22+26)+1159

Tinh nhanh

Answer 1

\(\left(138+21\right).51+159.\left(22+26\right)+1159\)

\(=159.51+159.48++159+1100\)

\(=159\left(51+48+1\right)+1100\)

\(=159.100+1100\)

\(=159.100+11.100\)

\(=\left(159+11\right).100\)

\(=170.100\)

\(=17000\)

Answer 2

(138+21)*51+159*(22+26)+1159

=159*51+159*48+1159

=159*(51+48)+1159

=159*99+1159

=15741+1159=16900

 mình ko biết có làm dúng ko bạn thử lại nhé

Answer 3

(138+21)×51+159×(22+26)+1159

= 159 x 51 + 159 x 48 + 1159

= 159 x (51 + 48) + 1159

= 159 x 99 + 1159

=15741 + 1159

=16900