Question

Tính nhanh :8 x 57 x 3 + 2 x 21 x 12 + 48 x 11

Answer 1

8 x 57 x 3 + 2 x 21 x 12 + 48 x 11 = 3798168

hok tok

Answer 2

(8 x 3) x 57 + (12 x 2) x 21 + 24 x 2 x 11 =

24 x 57 + 24 x 21 + 24 x 22 = 

24 x (57 + 21 + 22) = 

24 x 100 = 2400

Answer 3

   8 x 57 x 3 + 2 x 21 x 12 + 48 x 11

=  ( 8 x 3 ) x 57 + ( 2 x 12 ) x 21 + 24 x ( 2 x 11 )

=       24     x 57 +       24     x 21 + 24 x 22

=  24 x ( 57 + 21 + 22 )

= 24 x  100

=      2400