1.2×2.5+0.8×2.5=(_+_)×_.

问题描述:

1.2×2.5+0.8×2.5=(______+______)×______.

1.2×2.5+0.8×2.5,
=(1.2+0.8)×2.5,
=2×2.5,
=5;
故答案为:1.2、0.8、2.5.