Question

用简便方法计算4.65X3.2+9.3X3.3+0.465X2

Answer 1

4.65X3.2+9.3X3.3+0.465X2

=4.65X3.2+4.65X2X3.3+4.65X0.2

=4.65X(3.2+6.6+0.2)

=4.65X10

=46.5