Question

怎样简便计算3.6*14.4+9.3*32+3.21*36

Answer 1

3.6*14.4+9.3*32+3.21*36

=3.6*14.4+32.1*3.6+9.3*32

=3.6*(14.4+32.1)+9.3*32

=3.6*46.5+9.3*32

=3.6*5*9.3+9.3*32

=9.3*(18+32)

=9.3*50

=465