25 . 6 + 25 . 4 + 25 . 18 + 25 . 12
= 25 . (6 + 4 + 18 + 12)
= 25 . 40
= 1000
25 x 6 + 25 x 4 + 25 x 18 + 25 x 12
= 25 x ( 6 + 4 + 18 + 12 )
= 25 x 40
= 1 000
ta có 25.6 + 25.4 + 25.18 + 25.12 = 25.( 6 + 4 +18 + 12 ) = 25.40 =1000
Tính nhanh:
25 . 6 + 25 . 4 + 25 . 18 + 25.12
= 25. ( 6 + 4 + 18 + 12)
= 25 . 40
= 1000
Ủng hộ nha! :)
25 x 6 + 25 x 4 + 25 x 18 + 25 x 12
= 25 X ( 6 + 4 + 18 + 12 )
= 25 x 40
= 1000
25.6 + 25.4 + 25.18 + 25.12
= 25.( 6 + 4 + 18 + 12 )
= 25.40
= 1000
\(25\cdot6+25\cdot4+25\cdot18+25\cdot12\)
\(=25\cdot\left(6+4+18+12\right)\)
\(=25\cdot40\)
\(=1000\)
