-125.23+23.255
=23.(-125+255)
Tính nhanh :
\(-125\times23+23\times255\)
\(=\left(-125+255\right)\times23\)
\(=130\times23\)
\(=2990\)
-125.23+23.255
=23.(-125+255)
=23.130
=2990
-125.23+23.255
=23.(-125+255)
=23.130
=2990
Trl:
-125 . 23 + 23 . 255
= 23 . ( -125 + 255 )
= 23 . 130
= 2990
Hc tốt
Trà lời :
-125 . 23 + 23 . 225
= 23 . ( - 125 + 225 )
= 23 . 130
= 2990
