6.5×3.5＋0.65×65＝6.5×3.5＋6.5×6.5＝6.5＋（3.5＋6.5）＝6.5×10＝65
6.5X3.5+0.65X65=6.5X3.5+6.5X6.5=(3.5+6.5)X6.5=10X6.5=65
能用算式列出来么？这样不知道先后顺序
