变式题:把3.6+3.2+3.6+4+3.6改写成乘法算式.

问题描述:

变式题:把3.6+3.2+3.6+4+3.6改写成乘法算式.

3.6+3.2+3.6+4+3.6
=3x3.6+3.2+4
=3x3.6+2x3.6
=5x3.6
=18