28.9×4÷289的简便计算
问题描述:
28.9×4÷289的简便计算
答
28.9×4÷289
=28.9÷289×4
=0.1×4
=0.4
28.9×4÷289的简便计算
28.9×4÷289
=28.9÷289×4
=0.1×4
=0.4