k mình nha !
44 x 19 + 19 x 55 + 19
= 44 x 19 + 19 x 55 + 19 x 1
= ( 44 + 55 + 1 ) x 19
= 100 x 19
= 1900
44 x 19 + 19 x 55 + 19
= 19 x (44+55)
= 19 x 99
= 1881
Hok tốt
k nha!
= 44 x 19 + 19 x 55 + 19 x 1
= ( 44 + 55 + 1 ) x 19
= 100 x 19
= 1900
44 x 19 + 19 x 55 + 19
= 19 x (44 + 55)
= 19 x 99
= 1881
\(44\times19+19\times55+19\)
\(\Leftrightarrow19\times\left(44+55+1\right)\)
\(\Leftrightarrow19\times100\)
\(\Leftrightarrow1900\)
44 * 19 + 19 * 55 + 19
= 836 + 1045 + 19
= 1881 + 19
= 1900.
44 x 19 + 19 x 55 + 19
= 19 x ( 44 + 55 + 1)
= 19 x 100
= 1900
44 x 19 + 19 x 55 + 19
= 19 x ( 44 + 55 )
= 19 x 99
= 1881
hok tốt
.............
