37 x 29 + 53 x 27 + 29 x 63 + 27 x 47
➡️29 x( 37 + 63) + 27 x( 53 + 47)
➡️29 x 100 + 27 x 100
➡️100 x (29 + 27)
➡️100 x 56 = 5600.
Hok tốt nhé~
37 x 29 + 53 x 27 + 29 x 63 + 27 x 47
= 37 x 29 + 29 x 63 + 53 x 27 + 27 x 47
= 29 x (37 + 63) + 27 x (53 + 47)
= 29 x 100 + 27 x 100
= 100 x (29 + 27)
= 100 x 56
= 5600
37×29+53×27+29×63+27×47
= 29x(37+63)+27x(53+47)
= 29x100+27x100
=100x(29+27)
=100x56=5600
\(37\times29+53\times27+29\times63+27\times47=\left(37\times29+29\times63\right)+\left(53\times27+27\times47\right)\)
\(=29\times\left(37+63\right)+27\times\left(53+47\right)\)
\(=29\times100+27\times100\)
\(=100\times\left(29+27\right)=100\times56=5600\)
Trả lời:
\(37\cdot29+53\cdot27+29\cdot63+27\cdot47\)
\(=\left[\left(37+63\right)\cdot29\right]+\left[\left(53+47\right)\cdot27\right]\)
\(=\left(100\cdot29\right)+\left(100\cdot27\right)\)
\(=2900+2700\)
\(=5600\)
Hc tốt #
