a) \(437\times136-437\times125\)
\(=437\times\left(136-125\right)\)
\(=437\times11\)
\(=4807\)
b) \(2009\times71+29\times2009\)
\(=2009\times\left(71+29\right)\)
\(=2009\times100\)
\(=200900\)
a) 437 x 136 - 437 x 125
= 437 x (136 - 125 )
= 437 x 11
= 4807
b) 2009 x 71 + 29 x 2009
= 2009 x ( 71 + 29 )
= 2009 x 100
= 200900
a) 437 x 136 - 437 x 125
= 437 x (136 - 125)
= 437 x 11
= 4807
b) 2009 x 71 + 29 x 2009
= 2009 x (71 + 29)
=2009 x 100
=200900
nhớ nha!
Trl :
a) 437 x 136 - 437 x 125
= ( 136 - 125 ) x 437
= 11 x 437
= 4807
b) 2009 x 71 + 29 x 2009
= ( 71 + 29 ) x 2009
= 100 x 2009
= 200 900
