7.28乘0.1加0.09乘72.8的简便算法怎么写

7.28乘0.1加0.09乘72.8的简便算法怎么写
2025-01-05 17:36:52
推荐回答(1个)
回答1:

简便算法怎么写
7.28×0.1+0.09×72.8
=7.28×0.1+0.9×7.28
=7.28×(0.1+0.9)
=7.28×1
=7.28