Question

869x9+850+19 tings bằng cách thuận tiện nhất

 

Answer 1

\(869\cdot9+850+19\)

\(=869\cdot9+869\)

\(=869\left(9+1\right)\)

\(=869\cdot10=8690\)

Answer 2

    \(869\times9+869\)
\(=869\times9+869\times1\)
\(=869\times\left(9+1\right)\)
\(=869\times10\)
\(=8690\)

\(\#PeaGea\)

Answer 3

869 x 9 + 850 +  19

= 869 x 9 + 869

= 869x ( 9 + 1 )

= 869 x 10

= 8690