2.4乘4.5+6.5除以0.5的简便计算急!
问题描述：
2.4乘4.5+6.5除以0.5的简便计算急!
答
2.4×4.5+6.5÷0.5
=2.4×5×0.9+13
=12×0.9+13
=10.8+13
=23.8