4.8×7.8+78×0.52 用简便方法计算

2025-06-25 17:02:58
推荐回答(1个)
回答1:

4.8×7.8+78×0.52
=0.48×78+78×0.52
=0.48×78+0.52 ×78
=(0.48+0.52)×78
=1×78
=78