6.8乘16.8+19.3乘3.2简便答案是什么? 99999乘77778+33333乘66666

2024-11-13 15:30:19
推荐回答(1个)
回答1:

6.8×16.8+19.3×3.2
=(6.8+3.2)×16.8+3.2×2.5
=168+0.8×2.5×4
=168+8
=176