Question

简便计算,3+4.4+【(+3又4分之3)+(-8.4)】+(-1又4分之1)+6

Answer 1

3+4.4+【(+3又4分之3)+(-8.4)】+(-1又4分之1)+6

=3+4.4+(3.75-8.4)-1.25+6

=3+4.4+3.75-8.4-1.25+6

=(3+6)+(4.4-8.4)+(3.75-1.25)

=9-4+2.5

=5+2.5

=7.5