计算:99乘28+28的步骤是

问题描述:

计算:99乘28+28的步骤是

99x28+28
=2772+28
=2800

99x28+28
=(99+1)x28
=100x28
=2800

99x28+28
=(99+1)x28
=100x28
=2800

99乘28+28
=(99+1)乘28
=100乘28
=2800