4.8*0.9+0.48等于
问题描述：
4.8*0.9+0.48等于
答
4.8 × 0.9 + 0.48
= 4.8 × 0.9 + 4.8 × 0.1
= 4.8 × (0.9 + 0.1)
= 4.8 × 1
= 4.8