5×96+5.7×4+0.7×66的简便算法

2025-05-08 17:21:24
推荐回答(1个)
回答1:

5×96+5.7×4+0.7×66
=5×96+5×4+0.7×4+0.7×66
=5×(96+4)+0.7×(4+66)
=5×100+0.7×70
=500+49
=549