64 . 6 + 81 . 4 + 17 . 6
= 384 + 324 + 102
= 708 + 102
= 810
= 64,6+(81,4+17.6)
=64,6+99
=?
\(64.6+81.4+17.6\)
\(=\left(64.6+17.6\right)+81.4\)
\(=6\left(64+17\right)+81.4\)
\(=6.81+81.4\)
\(=81\left(6+4\right)\)
\(=81.10\)
\(=810\)
Học tốt nhé
\(64.6+81.4+17.6\)
\(=81.4+\left(64+17\right).6\)
\(=81.4+81.6\)
\(=81.\left(4+6\right)\)
\(=81.10=810\)
64.6+81.4+17.6
=(64.6+81.4)+17.6
=146+17.6
=163.6
= 6.( 64 + 17 ) + 81.4
= 6.81 + 81.4
= 81.( 6+4)
= 81.10
= 810
