2013+201.3+20.13+2.013
3个回答

1.2013+201.3+20.13+2.013

=2214.3+20.13+2.013

=2236.443

2.2013+201.3+20.13+2.013

=2.013*1000+2.013*100+2.013*10+2.013

=2.013*(1000+100+10+1)

=2.013*1111

=2236.443