8.7*25+1.3*2.5 (能简便吗?) 能的话,例算式.
问题描述：
8.7*25+1.3*2.5 (能简便吗?) 能的话,例算式.
答
8.7×25 + 1.3×2.5
= 8.7×25 + 0.13×25
= 25 × 8.83
= 25 × (8+0.8+0.03)
= 200+20+0.75
= 220.75