Question

Tính bằng cách thuận tiện:

20,12*35*2,012*250+201,2*3,9+20,12

Answer 1

Sửa đề: 20,12*35+2,012*250+201,2*3,9+20,12

=20,12*(35+25)+20,12(39+1)

=20,12*60+20,12*40

=20,12*100=2012

Answer 2

=20,12*(35+25)+20,12(39+1)

=20,12*60+20,12*40

=20,12*100=2012