Question

tính nhanh 2*31*12+4*6*42+8*27*3

ai nhanh sẽ t

Answer 1

2*31*12+4*6*42+8*27*3

=(2*12)*31+(6*4)*42+(8*3)*27

=24*31+24*42+24*27

=24*(31+42+27)

=24*100

=2400

Answer 2

tíck mk nha

Answer 3

2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3

= (2 x 12) x 31 + (6 x 4) x 42 + (8 x 3) x 27

= 24 x 31 + 24 x 42 + 24 x 27

= 24 x (31 + 42 + 27)

= 24 x 100

= 2400

Answer 4

2400 nha